Eating disorders are serious and often life-threatening mental illnesses that involve severe disturbances in people’s eating behaviors and related thoughts and emotions.

The DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, American Psychiatric Association, 2013) outlines six types of disordered eating patterns but four types are commonly diagnosed:

1. Anorexia Nervosa (AN)
2. Bulimia Nervosa (BN)
3. Binge Eating Disorder (BED)
4. Avoidant Restrictive Food Intake Disorder (ARFID)

The rest of the two types are;

5. Other Specified Feeding or Eating Disorders (OSFED)

   OSFED is also a moderate to severe illness and may include eating disorders of clinical significance that do not meet the criteria for AN or BN. OSFED and USFED may be as severe as AN or BN. Examples of OSFED presentations:

   1. Atypical Anorexia Nervosa: All AN criteria are met, except that despite significant weight loss, the individual’s weight is within or above the normal range.
   2. Bulimia Nervosa (of low frequency/limited duration): All BN criteria are met, but binge eating and compensatory behaviors occur less than once a week and/or for less than 3 months.
   3. Binge Eating Disorder (of low frequency/limited duration): All BED criteria are met, but binge eating occurs less than once a week and/or for less than 3 months.
   4. Purging Disorder: Recurrent purging behavior without binge eating to influence weight or shape.
   5. Night Eating Syndrome: Recurrent episodes of eating at night (after awakening from sleep or excessive food consumption after the evening meal).
6. Unspecified Feeding or Eating Disorders (USFED)

   USFED applies to where behaviours cause significant distress or impairment of functioning, but do not meet the full criteria of any of the other feeding or eating disorder criteria.

ANOREXIA NERVOSA

Anorexia nervosa (AN) is a severe eating disorder characterized by a distorted body image that leads to restricted eating, over exercise and other behaviors that prevents a person from gaining weight or maintaining a healthy weight.

OR

A person with anorexia nervosa continues to feel hunger but persists in denying himself or herself food. Children and teens with anorexia have a distorted body image. People with anorexia view themselves as heavy, even when they are dangerously skinny. They are obsessed with being thin and refuse to maintain even a minimally normal weight.

Diagnostic Criteria (DSM-5 adapted for children/adolescents):

• Restriction of energy intake: Leading to a body weight that is less than minimally normal for age and height (e.g., < 85% ideal body weight or a BMI-for-age < 5th percentile, or failure to achieve expected weight gain during periods of growth).
• Intense fear of gaining weight or becoming fat: Or persistent behavior that interferes with weight gain, even at a significantly low weight.
• Disturbance in the way one's body weight or shape is experienced: Undue influence of body weight or shape on self-evaluation, or persistent lack of recognition of the seriousness of the current low body weight.

Signs and Symptoms of Anorexia Nervosa

• Refusal to maintain a minimum normal body weight.
• Is intensely afraid of gaining weight.
• Significant disturbance in the perception of the shape or size of his or her body. (distorted image)
• Dieting even when one is thin or emaciated
• The individual maintains a body weight that is below a minimally normal level for age and weight.
• They exclude from their diet what they perceive to be highly caloric foods. ie they restrict diet.
• Purging i.e. self-induced vomiting or misuse of laxatives, diuretics.
• There is excessive exercise to reduce weight.
• Reduced total food intake
• Intense fear of becoming fat or obese.
• Strange eating habits, very picky.
• Infrequent menstruation or Amenorrhea due to reduced estrogen and loss of weight
• Oligomenorrhoea or failure to reach menarche.
• Loss of sexual interest
• Anxiety, depression, perfectionism (hold themselves to impossibly high standards)

Possible complications of Anorexia Nervosa

Anorexia nervosa is fatal in about 10% of cases. Most common death from anorexia nervosa is due to, cardiac arrest, electrolyte imbalance and suicide.

• Heart muscle damage that can occur as a result of malnutrition or repeated vomiting may be life threatening.
• Arrhythmias (a fast, slow, or irregular heartbeat)
• Hypotension (low blood pressure)
• Electrolyte imbalance.
• Anaemia (low RBC’s) and Leukopenia (low WBC’s)
• GIT disturbances.
• Dehydration
• Refeeding Syndrome: “is potentially a fatal condition defined by severe electrolyte and fluid shifts as a result of a rapid reintroduction of nutrition after a period of inadequate nutritional intake"

Management or Treating Anorexia Nervosa

• The major aim of treatment is to bring the young person back to normal weight and eating habits.
• Hospitalization, sometimes for weeks, may be necessary. In cases of extreme or life-threatening malnutrition, tube or intravenous feeding may be required.

Nursing care

• Short term management is focused on ensuring weight gain and correcting nutritional deficiencies. maintaining normal weight and preventing relapses
• provide a balanced diet of at least 3000 calories in 24 hours
• a nurse should always supervise the patient during meals
• patient should be under complete bed rest initially under nurses observation so as to achieve a weight gain goal of 0.5 to 1kg per week
• control vomiting by making the bathroom inaccessible 2 hours after food
• in extreme cases when the patient refuses to comply with treatment and eating, gavage feeding may need to be instituted
• weight should be checked regularly and plotted on a weight chart
• maintain a strict intake and output chart
• monitor skin status and oral mucous membrane for signs of dehydration
• encourage patient to verbalise feelings of fear and anxiety related to the achievement
• encourage family to participate in education regarding patients disorder
• avoid discussions that focus on food and weight

Long-term treatment addressing psychological issues include:

• antidepressant medication
• Neuroleptics
• appetite stimulants
• behavioral therapy
• individual therapy
• cognitive behavioural therapy
• family therapy
• psychotherapy
• support groups

BULIMIA NERVOSA

Young people with bulimia try to prevent weight gain by inducing vomiting or using laxatives, diet pills, diuretics, or enemas. After purging the food, they feel relieved. Binge eating is often done in private. Because most people with bulimia are of average weight or even slightly overweight, it may not be readily apparent to others that something is wrong.

The condition often begins in the late teens or early adulthood and is diagnosed mostly in women. People with bulimia may have other mental health issues, including depression, anxiety, drug or alcohol abuse, and self-injurious behaviors.

Binge is eating in a discrete period of time an amount of food that is definitely larger than most individuals would eat under similar circumstances.

Diagnostic Criteria (DSM-5):

Signs and Symptoms of Bulimia Nervosa

• The individual is typically ashamed of his or her eating problem.
• Persistent heart burn and sore throat.
• Abdominal and epigastric pain.
• They tend to conceal their symptoms, It occurs in secrecy
• Food is consumed rapidly
• Binge eating continues until the individual is uncomfortable or even painfully full.
• The binge eating is usually triggered by low mood, interpersonal stressors, intense hunger following dietary restraint.
• Loss of self control, Difficult in resisting binge eating or difficult in stopping it.
• Employs compensatory technique for example induce vomiting after binge eating.
• They place emphasis on body shape and weight in their self evaluation.
• Have fear in losing weight.
• May be overweight or underweight
• Low self esteem
• Increased frequency of anxiety for example fear of social situation
• Fluid and electrolyte imbalance due to purging
• Menstrual irregularity or amenorrhea may occur
• Rectal prolapse
• Increased dental caries
• Scarring of knuckles from using fingers to induce vomiting.

Management or Treating Bulimia Nervosa

Refer to General Management,

Treatment aims to break the binge-and-purge cycle. Treatments may include the following:

Nursing care

• engage patient in therapeutic alliance to obtain commitment to treatment
• establish contract with the patient that specifies amount and type of food she must eat at each meal
• set a time limit for each meal
• identify patients elimination patterns
• encourage the patient to recognize and verbalize her feelings about her eating behavior
• explain the risks of laxative, emetic and diuretic abuse
• assess and monitor patients suicide potential

Other treatment modalities

• antidepressants medication
• behavior modification
• individual, family, or group therapy
• nutritional counseling
• self help groups

Complications of Bulimia Nervosa

• Stomach acids from chronic vomiting can cause,
• damage to tooth enamel,
• inflammation of the esophagus,
• swelling of the salivary glands in the cheeks,
• low potassium which can lead to abnormal heart rhythms.

BINGE EATING DISORDER

Binge eating is similar to bulimia.

• Binge Eating Disorder is characterized by recurrent episodes of binge eating, similar to Bulimia Nervosa, but without the regular use of inappropriate compensatory behaviors (like purging). Individuals with BED often experience significant distress about their binge eating.

Diagnostic Criteria (DSM-5):

• Recurrent episodes of binge eating: As defined in Bulimia Nervosa.
• Associated with three or more of the following:
  1. Eating much more rapidly than normal.
  2. Eating until feeling uncomfortably full.
  3. Eating large amounts of food when not feeling physically hungry.
  4. Eating alone because of feeling embarrassed by how much one is eating.
  5. Feeling disgusted with oneself, depressed, or very guilty afterward.
• Marked distress regarding binge eating is present.
• Frequency: The binge eating occurs, on average, at least once a week for 3 months.
• Absence of Compensatory Behaviors: The binge eating is not associated with the recurrent use of inappropriate compensatory behaviors as in Bulimia Nervosa and does not occur exclusively during the course of Anorexia Nervosa or Bulimia Nervosa.

People with binge eating disorder eat unusually large amounts of food often and in secret but do not attempt to get rid of calories once the food is consumed. People with the condition may be embarrassed or feel guilty about binge eating, but they feel such a compulsion that they cannot stop.

These people can be of average weight, overweight, or obese. They may also have other mental health disorders, such as depression. Many binge eaters have trouble coping with anger, sadness, boredom, worry, and stress.

Binge eating disorder often has no physical symptoms, but it has psychological symptoms that may or may not be apparent to others, such as depression, anxiety, or shame or guilt over the amount of food eaten. Frequent dieting without weight loss is another symptom.

The excess weight caused by binge eating puts the child at risk of these health problems:

• heart disease
• high blood pressure
• high cholesterol
• type 2 diabetes

Treatments include the following: Refer to General Management,

• behavioral therapy
• medications, including antidepressants
• psychotherapy

AVOIDANT/RESTRICTIVE FOOD INTAKE DISORDER

ARFID is characterized by a persistent failure to meet appropriate nutritional and/or energy needs due to insufficient food intake. Unlike AN, it is not driven by body image concerns or a fear of gaining weight. Instead, the restriction is often due to sensory characteristics of food, a fear of aversive consequences (e.g., choking, vomiting), or a general lack of interest in eating.

The condition can lead to weight loss, inadequate growth, nutritional deficiencies, and impaired psychosocial functioning, such as an inability to eat with others. Unlike anorexia nervosa, there are not weight or shape concerns or intentional efforts to lose weight.

For instance, a child may consume only a very narrow range of foods and refuse even those foods if they appear new or different. This type of eating disorder commonly develops in childhood and can affect adults as well.

Diagnostic Criteria (DSM-5):

• An eating or feeding disturbance (e.g., apparent lack of interest in eating or food; avoidance based on the sensory characteristics of food; concern about aversive consequences of eating) as manifested by persistent failure to meet appropriate nutritional and/or energy needs associated with one (or more) of the following:
  1. Significant weight loss (or failure to achieve expected weight gain or faltering growth in children).
  2. Significant nutritional deficiency.
  3. Dependence on enteral feeding or oral nutritional supplements.
  4. Marked interference with psychosocial functioning.
• Not attributable to lack of available food or to an associated cultural practice.
• Not due to body image disturbance: The eating disturbance does not involve a disturbance in the way one’s body weight or shape is experienced.
• Not better explained by another medical condition or another mental disorder. If it occurs in the context of another condition, the eating disturbance exceeds what is typically associated with the condition and warrants additional clinical attention.

Etiological Factors and Risk Factors

Eating disorders are not caused by a single factor but result from an interaction of various influences.

I. Genetic and Biological Factors:

1. Genetic Predisposition:
   • Family History: Research indicates that eating disorders run in families. Individuals with a first-degree relative (parent, sibling) who has had an eating disorder are at a significantly higher risk of developing one themselves.
   • Heritability: Studies suggest a moderate to high heritability for AN and BN, with genetic factors accounting for 50-80% of the risk for AN and 30-50% for BN.
   • Specific Genes: While no single "eating disorder gene" has been identified, research points to multiple genes that may influence personality traits (e.g., perfectionism, anxiety), temperament, impulsivity, satiety, and body weight regulation, thereby increasing vulnerability.
2. Neurobiological Factors:
   • Brain Structure and Function: Differences in brain regions involved in appetite regulation, reward pathways, emotional processing, and cognitive control (e.g., prefrontal cortex, insula, striatum) have been observed in individuals with eating disorders.
   • Neurotransmitters: Dysregulation of neurotransmitters such as serotonin, dopamine, and norepinephrine, which influence mood, anxiety, impulse control, and appetite, may play a role. For example, altered serotonin activity has been implicated in the anxiety and perfectionism often seen in AN.
   • Hypothalamic-Pituitary-Adrenal (HPA) Axis: Chronic stress and starvation can dysregulate the HPA axis, impacting stress response, mood, and appetite.
3. Temperamental Traits (Often Biologically Based):
   • Perfectionism: A strong drive for flawlessness and high standards, often combined with excessive self-criticism.
   • Anxiety/Neuroticism: Tendency to experience negative emotions, worry, and physiological arousal. Many individuals with AN report anxiety symptoms predating the onset of their eating disorder.
   • Obsessionality/Rigidity: A tendency towards compulsive behaviors, difficulty with cognitive flexibility, and a need for order and control.
   • Impulsivity (more common in BN and BED): Difficulty controlling urges, leading to behaviors like binge eating or purging.
   • Negative Affectivity: A general predisposition to experience negative mood states.

II. Psychological Factors:

1. Low Self-Esteem: A pervasive feeling of inadequacy and self-dislike, often leading individuals to seek validation through weight control.
2. Body Dissatisfaction/Body Image Disturbance: Negative thoughts and feelings about one's body, often involving a distorted perception of body shape or size.
3. Depression and Anxiety Disorders: Co-occurring mental health conditions are common. Eating disorders can be a maladaptive coping mechanism for underlying emotional distress. Anxiety, especially social anxiety, can lead to food avoidance or restrictive eating.
4. Obsessive-Compulsive Traits: A focus on rules, routines, and a need for control can manifest as rigid eating behaviors and excessive exercise.
5. Difficulty with Emotion Regulation: Inability to effectively manage and tolerate intense emotions, leading individuals to use eating behaviors (e.g., restriction, bingeing, purging) to numb, escape, or gain a sense of control over feelings.
6. Trauma History: A history of trauma (e.g., abuse, neglect, bullying) can significantly increase the risk of developing an eating disorder, often as a way to cope with or regain control after traumatic experiences.

III. Family Factors:

1. Family Functioning (Complex and Nuanced):
   • Communication Patterns: Dysfunctional communication (e.g., overly critical, conflict-avoidant, enmeshed) can contribute to stress within the family system, potentially impacting a child's coping mechanisms.
   • High Parental Expectations/Over-involvement: Pressure to achieve or excel, coupled with a lack of autonomy, can contribute to feelings of inadequacy or a need for control.
   • Family Dieting/Weight Concerns: Families that place a strong emphasis on dieting, thinness, or appearance can inadvertently model unhealthy behaviors and attitudes toward food and body image.
   • Lack of Emotional Expression: Difficulty expressing emotions openly within the family can lead children to internalize feelings and express distress through eating behaviors.
   • Family History of Mental Illness: Parental mental health issues (e.g., depression, anxiety, substance abuse) can impact parenting styles and create a more challenging environment for a child.
2. Parental Attitudes Towards Food and Weight: Parents who frequently diet, express dissatisfaction with their own bodies, or comment on their children's weight can significantly influence a child's body image and eating habits.
3. Childhood Feeding Problems: A history of picky eating or other feeding difficulties in early childhood (which can evolve into ARFID) can sometimes be a precursor.

IV. Sociocultural Factors:

1. Idealization of Thinness: Media (social media, television, magazines) often promotes an unrealistic and unattainable ideal of thinness, particularly for females, creating immense pressure to conform. This ideal is often equated with success, happiness, and beauty.
2. Body Shaming and Fatphobia: Societal stigma against larger bodies contributes to body dissatisfaction and a fear of weight gain, pushing individuals toward restrictive eating.
3. Social Media Influence:
   • Comparison Culture: Constant exposure to curated images and "perfect" bodies leads to social comparison, often with negative effects on self-esteem and body image.
   • "Fitspo" and Diet Culture: Promotion of extreme diets, excessive exercise, and a focus on "clean eating" can normalize disordered eating behaviors.
   • Cyberbullying: Weight-related bullying online can be a significant trigger for body image issues and eating disorders.
4. Peer Pressure: Pressure from peers to look a certain way, diet, or engage in unhealthy behaviors can be highly influential, especially during adolescence.
5. Sports and Activities: Participation in certain sports (e.g., ballet, gymnastics, wrestling, long-distance running) that emphasize leanness, weight categories, or aesthetic appearance can increase the risk of developing an eating disorder due to pressure from coaches or self-imposed expectations.
6. Cultural Norms: While eating disorders are often associated with Western cultures, they are increasingly recognized globally, adapting to local cultural ideals of beauty and body size.

Clinical Manifestations and Assessment Findings

A thorough nursing assessment is paramount for accurate diagnosis and timely intervention.

I. General Clinical Manifestations (Across Eating Disorders, but Vary in Severity):

These are some common indicators, but not all may be present, and their significance varies by disorder.

A. Behavioral Signs:

• Significant and rapid weight changes: Either loss or gain (for AN, often weight loss or failure to gain; for BN/BED, weight fluctuations or gain).
• Food rituals: Cutting food into tiny pieces, arranging food, eating very slowly, specific food orders, excessive chewing.
• Avoidance of mealtimes or eating in front of others: Making excuses ("I already ate," "I'm not hungry," "I don't feel well").
• Preoccupation with food, weight, calories, fat content, or dieting: Constantly reading food labels, collecting recipes, cooking for others but not eating themselves.
• Excessive and rigid exercise: Compulsive need to exercise, even when ill, injured, or exhausted; prioritizing exercise over social events or schoolwork.
• Frequent trips to the bathroom, especially after meals: May indicate purging.
• Wearing baggy or layered clothing: To hide weight loss or perceived body shape.
• Social withdrawal and isolation: Avoiding friends, family activities, or events where food might be present.
• Changes in clothing size: Continuously buying smaller clothes (AN) or larger clothes (BED, or to hide body shape).
• Hoarding food, secretly eating, or stealing food: Especially with BN or BED.
• Self-harm behaviors or suicidal ideation: Often co-occurs with eating disorders.
• Refusal to maintain a normal weight for age and height.
• Development of "new" food preferences or aversions: Particularly relevant for ARFID.

B. Psychological/Emotional Signs:

• Increased anxiety or irritability, especially around mealtimes.
• Depression, sadness, frequent mood swings.
• Perfectionism and rigidity: Extreme concern with details, rules, and control.
• Low self-esteem, feelings of inadequacy, self-criticism.
• Distorted body image: Believing one is "fat" even when dangerously underweight (AN).
• Intense fear of gaining weight or becoming fat.
• Difficulty concentrating or focusing.
• Obsessive thoughts about food, body, or exercise.
• Feelings of guilt or shame after eating (especially with BN/BED).
• Lack of insight: Denial of the severity of the illness, especially in AN.

C. Physical Signs (Vary by Type and Severity):

• General:
  • Fatigue, low energy, lethargy.
  • Dizziness, fainting spells (orthostatic hypotension).
  • Cold intolerance.
  • Hair loss or thinning.
  • Dry skin, brittle nails.
  • Constipation.
  • Growth stunting or delayed puberty (in younger individuals).
  • Dental erosion (from purging).
  • Swollen salivary glands (parotid glands, from purging).
  • Calluses or scars on the back of hands (Russell's sign, from self-induced vomiting).
  • Abnormal laboratory results (e.g., electrolyte imbalances, anemia).
• Anorexia Nervosa specific:
  • Significantly underweight appearance.
  • Bradycardia (slow heart rate), hypotension (low blood pressure).
  • Amenorrhea (absence of menstruation) in post-menarchal females.
  • Lanugo (fine, downy hair growth on body).
  • Peripheral edema (swelling, often in ankles/feet).
  • Osteoporosis/osteopenia (bone density loss).
  • Cold, mottled extremities.
• Bulimia Nervosa specific:
  • Often normal weight or overweight.
  • Dental issues (cavities, enamel erosion).
  • Sore throat, heartburn.
  • Fluid retention, electrolyte imbalances (e.g., hypokalemia, hyponatremia).
• ARFID specific:
  • Significant weight loss or failure to gain weight/grow.
  • Specific nutritional deficiencies (e.g., iron, zinc, vitamin D).
  • Gastrointestinal symptoms (e.g., abdominal pain, nausea) related to anxiety about food.

II. Essential Components of a Thorough Nursing Assessment:

A comprehensive assessment involves gathering information from multiple sources (patient, parents/guardians, school if appropriate) and across various domains.

A. Initial Screening Questions (for suspected ED):

• "Are you concerned about your weight or body shape?"
• "Are you trying to lose weight?"
• "How often do you weigh yourself?"
• "Do you ever feel out of control when you eat?"
• "Do you ever make yourself vomit, use laxatives, or exercise excessively to control your weight?"
• "Are there certain foods you avoid or are afraid to eat?" (ARFID specific)
• "Have you noticed changes in your menstrual cycle?" (for females)

Screening for an Eating Disorder

The SCOFF Test:

Early detection in patients with unexplained weight loss improves prognosis and may be aided by use of the SCOFF questionnaire, developed by John Morgan at Leeds Partnerships NHS Foundation Trust.

This questionnaire uses five simple screening questions and has been validated in specialist and primary care settings. It has a sensitivity of 100% and specificity of 90% for anorexia nervosa. A score of 2 or more positive answers should raise your index of suspicion of a case, highlighting the need for a comprehensive assessment for an eating disorder and consultation with an eating disorder expert or mental health clinician.

2. SUSS (Sit up – Squat – Stand Test) for muscle strength

1. Sit-up: patient lies down flat on the floor and sits up without, if possible, using their hands
2. Squat–Stand: patient squats down and rises without, if possible, using their hands.

Scoring (for Sit-up and Squat-Stand tests separately)

A Sit up – Squat – Stand(SUSS) score ≤ 2 indicates a RED FLAG.

Anorexia Nervosa (AN) has the HIGHEST MORTALITY rate of ALL mental health illnesses
Patients with AN are at risk of sudden death if the have the RED FLAGS below.

RED FLAGS

• SUSS score less or equal to 2
• Postural drop
• Bradycardia
• Hypothermia
• Electrolyte abnormalities

B. History Taking:

1. Presenting Complaint and History of Illness:
   • When did symptoms start? What are they?
   • Weight history: Highest, lowest, current, goal weight; rate of weight change.
   • Dietary intake: Typical daily intake, foods avoided, portion sizes, caloric restriction, food rituals.
   • Binge/purge behaviors: Type, frequency, triggers, amount of food.
   • Exercise patterns: Type, duration, intensity, compulsion.
   • Body image concerns, fear of fat, desire for thinness.
   • Associated physical symptoms (e.g., GI issues, dizziness, cold intolerance).
   • Medication use (prescribed, OTC, laxatives, diet pills, diuretics).
2. Medical History:
   • Past medical conditions, hospitalizations, surgeries.
   • Growth and development history (growth charts are crucial).
   • Pubertal development and menstrual history (age of menarche, regularity).
   • Family medical history (especially eating disorders, mental health issues, cardiac problems).
3. Psychosocial History:
   • Family dynamics and support system.
   • Peer relationships, social isolation.
   • School performance, academic pressures, bullying.
   • Presence of stress, trauma, abuse history.
   • Co-occurring mental health symptoms (depression, anxiety, self-harm, suicidal ideation, OCD).
   • Substance use history.
   • Coping mechanisms.
4. Nutritional History:
   • Typical daily food intake, food allergies/intolerances.
   • Food preferences/aversions (especially for ARFID).
   • Use of supplements.

C. Physical Examination:

1. Vital Signs:
   • Heart Rate: Bradycardia common in AN; tachycardia can indicate electrolyte imbalance or anxiety.
   • Blood Pressure: Hypotension common in AN; orthostatic hypotension is a red flag.
   • Temperature: Hypothermia common in AN due to metabolic slowing.
   • Respiratory Rate: May be decreased in severe malnutrition.
2. Anthropometric Measurements:
   • Weight: Current weight (naked if possible, or in light gown).
   • Height.
   • BMI: Calculate and plot on growth charts for age/sex (critical for children/adolescents).
   • Weight percentile: Compare to age/sex norms.
3. General Appearance:
   • Emaciation (AN), normal weight, or overweight.
   • Skin turgor, color (pallor, jaundice).
   • Hair (lanugo, thinning).
   • Nails (brittle, discolored).
   • Dental exam (erosion, caries, gingivitis, parotid swelling).
   • Calluses on knuckles (Russell's sign).
4. Cardiovascular: Heart sounds, peripheral pulses, edema.
5. Abdominal: Bowel sounds, tenderness, distension.
6. Neurological: Reflexes, muscle strength, mental status.
7. Skin: Rashes, petechiae, self-harm marks.

D. Diagnostic Studies (Ordered by Physician, but Nurses assist with collection/monitoring):

• Laboratory Tests:
  • Complete Blood Count (CBC): Anemia.
  • Electrolytes (Potassium, Sodium, Chloride): Imbalances common with purging.
  • Glucose.
  • Kidney function (BUN, Creatinine).
  • Liver function tests.
  • Thyroid function tests.
  • Calcium, Magnesium, Phosphate (crucial for refeeding syndrome risk).
  • Vitamin levels (D, B12, Thiamine).
  • Urinalysis.
• Electrocardiogram (ECG): To assess for cardiac abnormalities (e.g., prolonged QT interval due to electrolyte imbalance, bradycardia).
• Bone Mineral Density (DEXA scan): To assess for osteoporosis, especially in AN.

Medical Complications and Their Management

Early recognition and aggressive medical stabilization are paramount.

I. General Medical Complications (Across Eating Disorders, but Severity Varies):

These complications can arise from malnutrition, purging behaviors, electrolyte imbalances, and chronic stress on the body.

1. Cardiovascular System:
   • Complications:
     • Bradycardia: Abnormally slow heart rate (common in AN due to metabolic slowing).
     • Hypotension/Orthostatic Hypotension: Low blood pressure, dizziness upon standing, increased risk of fainting.
     • Arrhythmias: Irregular heartbeats, often due to severe electrolyte imbalances (especially hypokalemia, hypomagnesemia), leading to increased risk of sudden cardiac death. Prolonged QT interval on ECG.
     • Cardiomyopathy: Weakening of the heart muscle, potentially leading to heart failure (can occur in severe malnutrition or from stimulant misuse).
     • Pericardial Effusion: Fluid accumulation around the heart.
     • Mitral Valve Prolapse: More common in AN.
   • Management:
     • Strict cardiac monitoring (ECG, telemonitoring).
     • Correction of electrolyte imbalances (IV or oral supplementation).
     • Gradual refeeding to prevent refeeding syndrome (see below).
     • Fluid resuscitation as needed.
     • Activity restriction to reduce cardiac workload.
2. Electrolyte and Fluid Imbalances:
   • Complications:
     • Hypokalemia (low potassium): Most dangerous, often from vomiting, laxative/diuretic abuse. Can cause fatal arrhythmias, muscle weakness, kidney damage.
     • Hyponatremia (low sodium): From excessive water intake (water loading) or inappropriate ADH secretion.
     • Hypochloremia (low chloride): Often with hypokalemia.
     • Metabolic Alkalosis: From vomiting (loss of gastric acid).
     • Metabolic Acidosis: From laxative abuse (loss of bicarbonate).
     • Dehydration: Due to fluid restriction, vomiting, or laxative/diuretic use.
   • Management:
     • Frequent monitoring of serum electrolytes.
     • Aggressive, controlled intravenous or oral repletion of electrolytes (e.g., potassium chloride).
     • Fluid balance monitoring (strict intake/output).
     • Addressing and stopping purging behaviors.
3. Gastrointestinal System:
   • Complications:
     • Constipation: Very common, especially in AN, due to slow gastric motility, dehydration, low fiber intake, and laxative abuse.
     • Gastroparesis: Delayed gastric emptying, leading to early satiety, bloating, nausea, vomiting.
     • Esophageal Irritation/Tears (Mallory-Weiss tears): From frequent vomiting, can cause bleeding.
     • Dental Erosion/Caries: From exposure to stomach acid during vomiting (BN).
     • Parotid Gland Swelling (sialadenosis): Enlargement of salivary glands due to repeated vomiting.
     • Pancreatitis: Inflammation of the pancreas (rare, but severe; can be triggered by refeeding).
     • Gastric Rupture: Extremely rare but life-threatening complication of binge eating.
   • Management:
     • Dietary modifications (adequate fiber, hydration for constipation).
     • Stool softeners/laxatives (non-stimulant) as needed for constipation.
     • Anti-emetics for nausea.
     • Dental care and fluoride treatments.
     • Proton pump inhibitors for esophageal irritation.
     • Gradual refeeding to allow GI system to adapt.
4. Endocrine System:
   • Complications:
     • Amenorrhea/Oligomenorrhea: Loss or irregularity of menstrual periods in females (AN, but can occur with severe stress/malnutrition in other EDs). Can impact bone health.
     • Hypothyroidism: Low thyroid hormone levels, contributing to bradycardia, cold intolerance, fatigue.
     • Growth Retardation/Delayed Puberty: In children/adolescents with AN, severe malnutrition can halt or reverse growth and pubertal development, potentially causing irreversible height deficits.
     • Infertility: Long-term reproductive issues.
     • Low IGF-1 (Insulin-like Growth Factor 1): Associated with growth delay.
   • Management:
     • Nutritional rehabilitation is the primary treatment to restore hormonal function.
     • Monitor thyroid function.
     • For adolescents, focus on catch-up growth and pubertal development.
5. Bone Health:
   • Complications:
     • Osteopenia/Osteoporosis: Decreased bone density, increased risk of fractures, especially in AN. Caused by malnutrition, low estrogen (in females), elevated cortisol, and low vitamin D. This can be irreversible in adolescents.
   • Management:
     • Nutritional rehabilitation to restore weight and hormonal function.
     • Adequate calcium and vitamin D intake.
     • Weight-bearing exercise (when medically stable).
     • DEXA scans to monitor bone density.
     • Hormone replacement (e.g., estrogen) is generally not effective for bone density in AN until weight is restored.
6. Neurological System:
   • Complications:
     • Cognitive Impairment: Difficulty concentrating, poor memory, impaired judgment (especially in severe malnutrition).
     • Peripheral Neuropathy: Nerve damage (rare, from severe malnutrition).
     • Seizures: Can be due to severe electrolyte imbalances or refeeding syndrome.
     • Brain Atrophy: Reversible reduction in brain volume, especially white matter, with severe malnutrition.
   • Management:
     • Nutritional restoration.
     • Correction of electrolyte abnormalities.
     • Thiamine supplementation (especially if refeeding risk).
7. Hematological System:
   • Complications:
     • Anemia: Low red blood cell count (iron deficiency, B12/folate deficiency).
     • Leukopenia: Low white blood cell count (compromised immune function).
   • Management:
     • Nutritional rehabilitation.
     • Iron, B12, folate supplementation as needed.
8. Renal System:
   • Complications:
     • Kidney Damage/Failure: From chronic dehydration, electrolyte imbalances, or laxative/diuretic abuse.
   • Management:
     • Fluid and electrolyte balance.
     • Discontinuation of harmful medications.

II. Specific Considerations for Children and Adolescents:

• Growth and Development: Malnutrition during critical growth periods can lead to irreversible stunting of height and delayed or arrested puberty. This is a major concern unique to this age group.
• Brain Development: The adolescent brain is still developing, and malnutrition can impair cognitive function and increase vulnerability to other mental health issues.
• Bone Mass Accumulation: Peak bone mass is typically achieved in late adolescence/early adulthood. Malnutrition during this time significantly compromises bone health, leading to lifelong risks.
• Refeeding Syndrome: This is a potentially fatal complication that occurs when severely malnourished individuals are refed too quickly. It involves dangerous shifts in fluid and electrolytes (especially phosphorus, potassium, magnesium) as the body shifts from fat to carbohydrate metabolism, leading to cardiac, respiratory, neurological, and hematological complications.

III. Nursing Management of Medical Complications:

1. Close Monitoring:
   • Vital Signs: Frequent (e.g., every 4 hours or more often if unstable) monitoring of HR, BP (including orthostatics), temperature, respiratory rate.
   • Cardiac Monitoring: Telemetry if high risk for arrhythmias (e.g., severe bradycardia, electrolyte imbalances, prolonged QT).
   • Fluid Balance: Strict intake and output (I&O), daily weights.
   • Physical Assessment: Daily assessment for signs of dehydration, edema, skin breakdown, GI symptoms, neurological changes.
   • Lab Values: Regular monitoring of electrolytes, glucose, renal and liver function, CBC.
2. Nutritional Rehabilitation (Medical Priority):
   • Gradual and Supervised Refeeding: Essential to prevent refeeding syndrome. Calories are slowly increased under medical guidance.
   • Structured Meal Plans: Ensure adequate, balanced nutrition.
   • Supplementation: Oral nutritional supplements, vitamins (especially thiamine before refeeding), minerals.
   • Tube Feeds: May be necessary in cases of extreme refusal or severe malnutrition.
   • Monitoring During Meals: Nurses play a crucial role in supervising meals, preventing compensatory behaviors, and providing support.
3. Electrolyte Correction:
   • Administer prescribed electrolyte supplements (oral or IV).
   • Educate patient/family on dangers of purging and importance of electrolyte balance.
4. Addressing Purging Behaviors:
   • Post-meal observation periods (e.g., 60-90 minutes) to prevent purging.
   • Therapeutic communication to explore triggers and coping mechanisms.
5. Safety:
   • Fall precautions due to orthostatic hypotension.
   • Monitoring for self-harm or suicidal ideation.
   • Maintaining a safe environment.
6. Pain Management: For GI discomfort, muscle aches, or other physical symptoms.
7. Patient and Family Education:
   • Educate on the specific medical risks associated with their eating disorder.
   • Teach about signs and symptoms of refeeding syndrome and other complications.
   • Emphasize the importance of adherence to meal plans and treatment.
   • Involve families in monitoring and support.

Therapeutic Modalities and Treatment Settings

The goals are medical stabilization, nutritional rehabilitation, cessation of eating disorder behaviors, and addressing the underlying psychological and familial issues.

I. Evidence-Based Therapeutic Modalities:

The choice of therapy depends on the specific eating disorder, the child's age, family involvement, and the severity of symptoms.

1. Family-Based Treatment (FBT) / Maudsley Approach:
   • Description: FBT is the leading evidence-based treatment for adolescent Anorexia Nervosa and is increasingly used for Bulimia Nervosa. It is an intensive outpatient therapy that empowers parents to take an active and primary role in their child's recovery. The treatment involves three phases:
     • Phase I (Weight Restoration): Parents are tasked with restoring their child's weight by taking full control over their eating, often needing to provide all meals and snacks and prevent compensatory behaviors. The therapist supports and coaches the parents in this role.
     • Phase II (Returning Control to Adolescent): Once weight is restored and eating behaviors are normalized, control over eating is gradually returned to the adolescent.
     • Phase III (Establishing Healthy Adolescent Identity): Focus shifts to general adolescent issues and ensuring a healthy developmental trajectory.
   • Key Principles:
     • The eating disorder is externalized; it's seen as an illness, not the child's fault.
     • Parents are seen as resources, not the cause of the problem.
     • Agnostic view of etiology (doesn't get bogged down in "why").
     • Focus on rapid weight restoration and cessation of ED behaviors.
   • Applicability: Most effective for Anorexia Nervosa in adolescents (typically under 18 years) with a relatively short duration of illness. Can be adapted for Bulimia Nervosa.
2. Cognitive Behavioral Therapy (CBT) / Enhanced CBT (CBT-E):
   • Description: CBT is a highly structured, time-limited psychological treatment that focuses on the interplay between thoughts, feelings, and behaviors. For eating disorders, CBT-E is particularly effective. It helps individuals identify and challenge distorted thoughts about food, body shape, and weight, and modify maladaptive eating behaviors.
   • Key Components:
     • Psychoeducation: Understanding the eating disorder.
     • Self-Monitoring: Tracking food intake, thoughts, feelings, and behaviors.
     • Regular Eating: Establishing a structured eating pattern.
     • Addressing Body Image Concerns: Challenging body dissatisfaction and body checking.
     • Cognitive Restructuring: Identifying and challenging distorted thoughts.
     • Exposure with Response Prevention: Gradually exposing individuals to feared foods or situations without engaging in compensatory behaviors.
     • Relapse Prevention: Developing strategies to maintain recovery.
   • Applicability: The primary evidence-based treatment for Bulimia Nervosa and Binge Eating Disorder in adolescents and adults. Can be used in older adolescents with Anorexia Nervosa after significant weight restoration. Often adapted for children/adolescents (e.g., CBT-AR for ARFID).
3. Dialectical Behavior Therapy (DBT):
   • Description: DBT was originally developed for Borderline Personality Disorder but has been adapted for eating disorders, particularly those involving impulsive behaviors, emotional dysregulation, and self-harm (common in BN and BED). It focuses on teaching skills in four modules: mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness.
   • Applicability: Useful for adolescents with eating disorders who struggle with intense emotions, impulsivity (e.g., binge-purge cycles, self-harm), and relationship difficulties.
4. Specialized Treatments for ARFID:
   • CBT-AR (Cognitive Behavioral Therapy for ARFID): Specifically designed to address the unique features of ARFID, focusing on anxiety management, exposure to feared foods, and behavioral strategies to increase food intake.
   • Exposure-Based Therapy: Gradual, systematic exposure to avoided foods, textures, and tastes in a supportive environment.
   • Parent-Coaching Models: Similar to FBT, parents are coached to support their child in expanding their food repertoire.
5. Psychodynamic Therapy/Supportive Therapy:
   • Description: Explores unconscious conflicts, past experiences, and relationship patterns that may contribute to the eating disorder. While not typically a first-line, evidence-based treatment for acute symptom reduction, it can be helpful for addressing underlying issues once behaviors are stable.
   • Applicability: Can be a valuable adjunct or longer-term therapy for some individuals, especially those with co-occurring mental health issues or a history of trauma.
6. Medication Management:
   • Antidepressants (SSRIs): Often used for Bulimia Nervosa (e.g., Fluoxetine/Prozac) to reduce binge-purge cycles. Can be helpful for co-occurring depression and anxiety in any ED, but usually not used as a primary treatment for Anorexia Nervosa until weight restoration due to potential side effects and limited efficacy at low weights.
   • Antipsychotics (e.g., Olanzapine): Can be used off-label in severe Anorexia Nervosa to help with anxiety, delusional thoughts about food/weight, and weight gain, but with careful consideration of side effects.
   • Stimulants: Generally avoided due to risk of appetite suppression and misuse.
   • Important Note: Medications are rarely a standalone treatment for eating disorders; they are typically used in conjunction with psychotherapy.

II. Levels of Care:

The intensity of treatment depends on the medical stability, severity of eating disorder symptoms, co-occurring mental health issues, and safety concerns. A "stepped care" approach is often used, where individuals move between levels as their needs change.

1. Outpatient Treatment (OP):
   • Description: The least restrictive level of care. Individuals live at home and attend regular appointments with a multidisciplinary team (psychiatrist, therapist, dietitian, medical doctor).
   • Characteristics:
     • Regular individual therapy (FBT, CBT, DBT).
     • Regular dietitian sessions for meal planning and nutritional education.
     • Medical monitoring by a primary care physician or specialist.
   • Applicability: For medically stable individuals who are motivated for change, have a strong support system, and are making progress towards recovery. Often serves as a step-down from higher levels of care or for early, less severe cases.
2. Intensive Outpatient Program (IOP):
   • Description: More structured than OP, but still allows individuals to live at home. Typically involves attending treatment for several hours a day, 3-5 days a week.
   • Characteristics:
     • Combines individual therapy, group therapy, family therapy, and dietitian support.
     • Often includes supervised meals and snacks.
     • Focuses on skill-building and relapse prevention.
   • Applicability: For individuals who need more support than traditional outpatient but don't require full-time supervision. Often a transition from PHP or residential.
3. Partial Hospitalization Program (PHP):
   • Description: A day treatment program, often 6-10 hours a day, 5-7 days a week. Individuals return home in the evenings.
   • Characteristics:
     • Comprehensive therapeutic milieu with structured meals, group therapy, individual therapy, family therapy, and educational sessions.
     • Medical and psychiatric monitoring.
     • Often includes supervised community outings (e.g., grocery shopping, restaurant challenges).
   • Applicability: For individuals who are medically stable but require daily structure, supervision during meals, and intensive therapeutic intervention to interrupt eating disorder behaviors and build coping skills.
4. Residential Treatment Center (RTC):
   • Description: A non-hospital setting where individuals live 24/7 in a structured, therapeutic environment.
   • Characteristics:
     • Highly structured schedule, round-the-clock supervision.
     • Intensive individual, group, and family therapy.
     • Supervised meals and snacks, often with nutritional education and culinary therapy.
     • Medical and psychiatric care on-site or with regular visits.
     • Focus on behavior interruption, skill acquisition, and addressing underlying issues.
   • Applicability: For individuals who are medically stable but unable to make progress in less intensive settings, require 24-hour supervision to prevent behaviors, or have significant co-occurring mental health issues.
5. Inpatient Hospitalization:
   • Description: The most intensive level of care, typically in a hospital setting (either medical or psychiatric unit).
   • Characteristics:
     • Constant medical monitoring and stabilization.
     • Focus on weight restoration and resolution of acute medical complications (e.g., severe bradycardia, electrolyte imbalances, refeeding syndrome risk).
     • Often involves nasogastric tube feeding if oral intake is insufficient or refused.
     • Limited psychotherapy during acute medical stabilization.
   • Applicability: For individuals with acute, life-threatening medical instability, severe malnutrition (e.g., <75% ideal body weight), rapid weight loss, severe electrolyte imbalances, suicidal ideation with plan, or psychiatric comorbidities requiring acute stabilization.

III. The Multidisciplinary Team:

Effective treatment requires collaboration among:

• Medical Doctor/Pediatrician: For medical assessment, monitoring, and management of complications.
• Psychiatrist: For psychiatric assessment, medication management, and diagnosis of co-occurring mental health disorders.
• Therapist/Psychologist: To deliver evidence-based psychotherapies (FBT, CBT, DBT).
• Registered Dietitian (RD): For nutritional assessment, meal planning, education, and addressing disordered eating patterns.
• Nurses: For medical monitoring, vital signs, physical assessment, administering medications, managing refeeding, supervising meals, and providing support and education.
• Social Worker/Case Manager: To coordinate care, assist with school re-entry, and connect families with resources.

Role of the Nurse in Interdisciplinary Care

Nurses are integral members of the interdisciplinary team caring for children and adolescents with eating disorders. Their role is broad, encompassing medical, psychological, and educational aspects of care. T

I. Assessment:

The nurse's assessment goes beyond initial data collection and is an ongoing process throughout treatment.

• Continuous Medical Monitoring: Regularly assessing vital signs (heart rate, blood pressure, temperature, orthostatics), performing physical assessments (skin integrity, hydration, dental health, edema, presence of lanugo, signs of self-harm, Russell's sign), and monitoring weight. For hospitalized patients, this is frequent and meticulous.
• Nutritional Status Assessment: Observing eating behaviors during meals, assessing food intake, identifying food rituals, and noting any attempts to hide or discard food. Monitoring for signs of refeeding syndrome.
• Psychological and Behavioral Assessment: Observing mood, anxiety levels, thought patterns (e.g., body image distortion, food preoccupation), coping mechanisms, impulsivity, self-harm behaviors, and suicidal ideation. Asking about the presence and frequency of bingeing, purging, restricting, or excessive exercise.
• Family Assessment: Understanding family dynamics, communication patterns, stressors, and the family's capacity to support the patient's recovery (especially crucial for FBT).
• Medication Assessment: Monitoring for adherence, side effects, and therapeutic effects of prescribed medications.

II. Planning:

Nurses collaborate with the interdisciplinary team (physician, psychiatrist, dietitian, therapist) to develop an individualized care plan.

• Goal Setting: Working with the patient and family to establish realistic and measurable goals for weight restoration, behavioral change, and symptom reduction.
• Medical Management: Contributing to the plan for medical stabilization, including fluid and electrolyte management, cardiac monitoring, and medication administration.
• Nutritional Planning: Collaborating with the dietitian on meal plans, feeding strategies (e.g., oral vs. tube feeds), and refeeding protocols.
• Behavioral Interventions: Planning specific nursing interventions to interrupt eating disorder behaviors (e.g., post-meal supervision, bathroom restrictions, exercise monitoring).
• Safety Planning: Developing strategies to ensure the patient's physical and psychological safety, including self-harm and suicide prevention protocols.
• Discharge Planning: Initiating and contributing to discharge planning early in the treatment process to ensure a smooth transition to a lower level of care or home, including follow-up appointments and community resources.

III. Implementation:

This is where nurses put the care plan into action, providing direct care and therapeutic interventions.

• Medical Care: Administering medications, monitoring IV fluids, managing nasogastric tubes, performing wound care (if self-harm present), and drawing blood for lab tests.
• Nutritional Support and Supervision:
  • Meal Supervision: Sitting with patients during meals and snacks, providing encouragement, redirecting eating disorder behaviors, and ensuring completion of the meal plan.
  • Refeeding: Carefully implementing refeeding protocols, monitoring for signs of refeeding syndrome (e.g., changes in vital signs, neurological status, electrolyte imbalances), and escalating concerns to the medical team immediately.
  • Education: Educating patients and families about nutrition, meal plans, and the importance of regular eating.
• Behavioral Interventions:
  • Post-Meal Monitoring: Observing patients for a specified time after meals to prevent purging or other compensatory behaviors.
  • Exercise Monitoring: Limiting or supervising exercise based on medical stability and treatment goals.
  • Bathroom Supervision: Implementing bathroom restrictions as needed to prevent purging.
• Therapeutic Communication and Support:
  • Building Rapport: Establishing a trusting relationship with the patient and family.
  • Active Listening: Allowing patients to express their feelings, fears, and concerns without judgment.
  • Coping Skill Coaching: Helping patients practice and integrate coping skills learned in therapy (e.g., distress tolerance, emotion regulation).
  • Psychoeducation: Providing information about eating disorders, medical complications, and treatment strategies in an age-appropriate and family-centered manner.
• Environmental Management: Creating a safe, supportive, and structured therapeutic environment that minimizes triggers and promotes recovery.

IV. Evaluation:

Nurses continuously evaluate the effectiveness of the care plan and make adjustments in collaboration with the team.

• Monitoring Progress: Tracking weight gain, cessation of symptoms, improvement in medical parameters (vital signs, lab results), and adherence to meal plans.
• Assessing Behavioral Change: Evaluating the reduction in eating disorder behaviors (e.g., less restricting, fewer binge/purge episodes, reduced compulsive exercise).
• Patient and Family Feedback: Soliciting input from the patient and family on the effectiveness of interventions and their overall experience.
• Identifying Setbacks: Recognizing and addressing any plateaus, regressions, or new challenges promptly.
• Adapting the Care Plan: Advocating for changes to the care plan as needed based on ongoing assessment and evaluation.
• Documenting Care: Maintaining accurate and thorough documentation of all assessments, interventions, and patient responses.

V. Collaboration within the Interdisciplinary Team:

The nurse acts as a crucial link and communicator within the interdisciplinary team.

• Communication: Regularly communicating patient status, changes, and concerns to the physician, psychiatrist, dietitian, and therapist.
• Advocacy: Advocating for the patient's needs and preferences, ensuring their voice is heard in treatment planning.
• Coordination of Care: Helping to ensure continuity of care across shifts and between different team members.
• Family Liaison: Bridging communication between the treatment team and the family, providing updates, and reinforcing education.
• Team Meetings: Actively participating in team rounds and meetings to share observations, contribute to decision-making, and learn from other disciplines.