Nurses Revision

throat foreign bodies

Foreign Bodies in the Throat

Foreign Bodies in the Throat
I. Introduction

A foreign body in the throat refers to any unswallowable or non-respiratory object—whether food or non-food—that becomes lodged in the aerodigestive tract (pharynx, larynx, trachea, bronchi, or esophagus) rather than passing smoothly into the stomach or being cleared by natural mechanisms. This can cause partial or complete obstruction of the airway or digestive tract, leading to an immediate medical emergency requiring prompt intervention.

Examples of Commonly Lodged Foreign Bodies:
  • In Adults: Meat boluses, fish bones, chicken bones, poorly chewed food, and occasionally dental appliances (dentures).
  • In Infants and Children: Coins, small toys, button (disc) batteries, marbles, peanuts, grapes, hard candies, safety pins, and toe rings.
II. Aspirated (Airway) Foreign Body
A. Clinical Staging
  1. Initial phase: choking, coughing, wheezing, gagging
  2. Asymptomatic phase: due to mucosal adaptation
  3. Late phase: Laryngeal / Tracheal / Bronchial
  4. Complication phase: pneumonia, emphysema, lung abscess, atelectasis
B. Late Clinical Features
  • a. Laryngeal: partial or total airway obstruction, hoarseness, aphonia, hemoptysis
  • b. Tracheal: airway obstruction, hemoptysis, wheezing, palpatory thud, auscultatory slap
  • c. Bronchial: cough, ipsilateral wheezing, ipsilateral decreased breath sounds
C. Pathophysiological Effects of Obstruction (Airway Obstruction Effects)
  • Bypass valve & Stop valve effect
    • Partial Obstruction: Wheezing
    • Total Obstruction: Late Atelectasis
  • Check valve effect
    • No Expiration: Emphysema
    • No Inspiration: Early Atelectasis
D. Clinical Diagnosis
Conscious pt:
  • Hoarseness / aphonia
  • Respiratory distress
Unconscious pt:
  • No chest movement
  • No air exchange at nose / mouth.
  • Cyanosis.

Note: Radio-opaque F.B. Bronchus can be visualized on X-ray. (Radiological imaging demonstrates radio-opaque foreign body in the bronchus).

III. Management of Choking
A. Management of Choking in an Unconscious Patient
  • Patient placed in supine position
  • Open airway + mouth to mouth ventilation
  • Correct airway obstruction
1. Opening the Airway
  • Head-tilt: Extension of neck by backward pressure on forehead
  • Head-tilt, chin-lift: Extension of neck by backward pressure on forehead + lift pt’s chin keeping mouth open.
  • Head-tilt, neck-lift: Lift pt’s neck while pushing down on forehead. Prevents falling back of tongue.
  • Modified jaw-thrust: For pt with neck / spinal injuries. Push patient’s jaw forward by applying pressure at angle of mandible. Avoid head tilt.
2. Correcting Airway Obstruction in an Unconscious Pt
  • Back blows
  • Abdominal thrusts
  • Chest thrusts (for pregnancy, age < 8 yrs)
  • All 3 raise subglottic pressure, to dislodge out FB
  • Open pt’s mouth
  • Blind finger sweeps in mouth
3. Maneuvers for Correcting Airway Obstruction / Techniques for Correcting Obstruction:
  • Back blows: Place pt in lateral position, supporting pt’s chest against your knees. Use free hand to deliver five rapid blows to spinal Area b/w scapulae, to dislodge F.B.
  • Abdominal thrusts: Straddle supine pt at his hip. Place your hand heel b/w pt’s umbilicus & ribcage, in midline. Hold that hand with your other hand & apply 5 rapid, inward + upward thrusts, to dislodge FB.
  • Chest thrusts: Kneel beside supine pt at chest level. Place hand heel on centre of pt’s sternum. Lock hands. Apply 5 rapid downward thrusts. Only 2 fingers used for a small child.
4. Opening Patient’s Mouth:
  • Tongue-jaw lift technique: Hold pt’s tongue + lower jaw b/w your thumb & fingers. Lift pt’s tongue to move it away from pharyngeal wall.
  • Crossed-finger technique: Cross your thumb under your index finger. Place your thumb against pt’s lower lip & index finger against his upper teeth. Uncross your fingers to open pt’s mouth.
5. Blind Finger Sweeps:
  • Open pt’s mouth. Insert index finger of free hand into pt’s mouth, along pt’s cheek, till tongue base. Use it as a hook to roll out FB.
  • Avoid pushing FB further back. Avoid blind sweeps in a child.
  • Attempt to remove visible FB only.
Sequence for Unconscious Pt:

5 Back blows ➔ (or ⇓) failure ➔ 5 Abdominal thrusts Or 5 Chest thrusts ➔ (or ⇓) failure ➔ Open pt’s mouth + blind finger sweeps.
Continue this sequence till FB is removed or pt is ready to be shifted to operation theatre.

B. Management of Choking in a Conscious Pt
  • If patient can speak, cough, or breathe: Do not interfere. Patient to be examined by an ENT specialist as soon as possible.
  • If the patient cannot speak, cough, or breathe: Begin treatment for obstructed airway.
1. Correcting Airway Obstruction in a Conscious Pt > 1 yr old

Sequence: 5 Back blows ➔ (or ⇓) failure ➔ 5 Abdominal thrusts (Heimlich maneuver) Or 5 Chest thrusts (for pregnancy, age < 8 yrs).
Continue this sequence till FB is removed or pt becomes unconscious.

2. Maneuvers for Conscious Patient / Techniques for Conscious Pt:
  • Back blows: Place pt in sitting / standing position. Support pt’s chest while bending pt at the waist. Use your free hand to deliver 5 rapid blows to spinal area b/w two scapulae.
  • Heimlich Maneuver (Abdominal thrusts): Stand behind sitting / standing pt & pass your arms around pt’s waist. Hold your fist against pt’s abdomen b/w umbilicus & ribcage. Lock hands & apply 5 rapid, inward + upward thrusts to dislodge FB.
  • Chest thrusts: Stand behind standing pt & pass your arms around pt’s chest. Hold your fist against pt’s sternum in its centre. Lock hands & apply 5 rapid, back-ward thrusts to dislodge FB.
C. Correcting Airway Obstruction in an Infant

Sequence: 5 Back blows ➔ (or ⇓) failure ➔ 5 Chest thrusts.
Continue this sequence till FB is removed or pt is ready to be shifted to operation theatre.

Maneuvers for Infant / Techniques for an Infant:
  • Back blows in an infant: Straddle infant face down, head lower than trunk, over your forearm, supported on your thigh. Deliver five rapid back blows, with heel of other hand b/w shoulder blades.
  • Chest thrusts in an infant: Supporting pt’s head, keep infant supine b/w your hands, with head lower than trunk. Using 2 fingers, deliver 5 rapid backward thrusts on sternum.
IV. Surgical Management
For life threatening stridor:
  • Cricothyrotomy
  • Emergency Tracheostomy
For foreign body removal:
  • Direct Laryngoscopy
  • Rigid Bronchoscopy
  • Thoracotomy & Bronchotomy
V. Prevention of Choking
  • Adults:
    • Cut food into small pieces
    • Chew food slowly & thoroughly
    • Avoid laughing / talking during eating
    • Avoid excess alcohol with / before meals
  • Infants & Children:
    • Keep small objects away from children
    • Avoid playing with food or toys in mouth
VI. Swallowed Foreign Body
A. Diagnosis
  • Plain X-ray (PA & Lateral): soft tissue neck, chest, abdomen ➔ for radio-opaque FB
  • Fluoroscopy with Barium soaked cotton pledget: ➔ for radiolucent FB
  • Barium Swallow
  • Flexible Oesophagoscopy
Radiological Findings (Examples) / Note: Common radiographic findings include:
  • Coin in cricopharynx
  • Toe ring in cricopharynx
  • Open safety pin
B. Locations & Management
Pharyngeal FB
  • Common sites: tonsil, pyriform fossa, vallecula, base tongue
  • Diagnosis confirmed by indirect laryngoscopy
  • Usually removed in OPD but may require removal by Hypo-pharyngoscopy ➔ (or ↓) GA
Oesophageal & Gastric FB
  • Common sites: cricopharynx, aortic indentation & cardiac end
  • Usually removed by rigid oesophagoscopy ➔ (or ↓) GA
  • Advancement into stomach is safe in difficult FB
  • Oesophagotomy rarely required for impacted FB
  • FB reaching stomach, usually passes out in stool
  • Emetic & Cathartic agents are contraindicated
C. Indications for Immediate Intervention
  1. Associated respiratory obstruction
  2. Total oesophageal obstruction
  3. Disc battery (perforation occurs in 8-12 hrs)
  4. Sharp, impacted foreign body
  5. Gastro-intestinal FB > 5 cm in a child < 2 yr
  6. Gastro-intestinal FB with acute abdominal pain
  7. No progress of FB in serial X-ray after 24 hr
  8. Gastric FB with pyloric stenosis
D. Complications of Neglected FB
  • Oesophageal ulceration & stricture
  • Oesophageal perforation ➔ mediastinitis
  • Peri-oesophageal cellulitis
  • Retro-pharyngeal abscess
  • Respiratory obstruction due to:
    • tracheal compression
    • laryngeal oedema
FIRST AID FOR THE CHOKING CHILD: RECOMMENDATIONS OF THE AMERICAN ACADEMY OF PEDIATRICS
For Victims under 1 Year of Age
  1. Infant is placed face down on rescuer's forearm with head down 60 degrees and stabilized.
  2. Four back blows are administered rapidly with heel of hand high between shoulder blades.
  3. If obstruction is not relieved, infant is turned supine on firm surface and four rapid chest thrusts are administered over sternum using two fingers.
  4. If breathing is not resumed, tongue-jaw lift is performed and mouth examined for foreign body. Visualized foreign body may be removed by finger sweep.
  5. If no spontaneous breathing occurs, ventilation is attempted with two breaths by mouth-to-mouth or mouth-to-nose technique.
  6. Steps 1 to 5 are repeated as needed.
For Small Children
  1. Child is placed on firm surface. With rescuer kneeling at child's feet, abdominal thrusts are performed with heel of one hand in midline between navel and rib cage, and second hand on top of first and pressed into abdomen with upward thrust. Six to ten abdominal thrusts are performed until the foreign body is expelled.
  2. If obstruction is not relieved, tongue-jaw lift is performed and mouth examined for foreign body. Visualized foreign body may be removed by finger sweep.
  3. If no spontaneous breathing occurs, ventilation is attempted with two breaths by mouth-to-mouth or mouth-to-nose technique.
  4. Steps 1 to 3 are repeated as needed.
For Older Children
  • Treat as an adult, with abdominal thrusts performed in standing, sitting, or supine position.

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