Critical Thinking in Nursing, Communication & SBAR

Nursing Lecture Presentation

By the end of this comprehensive lecture, the nursing student should be able to:

• Define critical thinking and explain its profound importance in ensuring safe, effective nursing practice.
• Describe the major skills, attitudes, and processes used in clinical reasoning.
• Apply critical thinking directly to the nursing process: assessment, prioritisation, decision-making, and evaluation.
• Explain effective communication techniques with doctors, fellow nurses, allied health professionals, and other healthcare providers.
• Describe the purpose, structure, and benefits of SBAR communication in clinical settings.
• Demonstrate an appropriate SBAR handover using a realistic clinical scenario.

Critical thinking is the deliberate, systematic thinking used to analyse information, question assumptions, and reach justified clinical decisions.

It is not a passive activity. It actively involves gathering relevant evidence from the patient, interpreting those findings accurately, considering alternative explanations, and ultimately deciding what course of action is the safest and most effective. In nursing, critical thinking acts as the bridge that connects raw assessment data with sound clinical judgement and appropriate, timely action.

Important Note: Critical thinking is not simply “thinking harder” or memorizing textbook facts; it requires purposeful reasoning, a questioning mindset, and continuous self-reflection.

The clinical environment is rarely as straightforward as a textbook case. Critical thinking is vital for patient safety for several reasons:

• Ambiguous Presentations: Patients frequently present with incomplete, rapidly changing, or conflicting information. A patient with a stomach ache might have indigestion, or they might be having a myocardial infarction (heart attack).
• Early Recognition of Deterioration: Subtly connecting the dots (e.g., a slight increase in respiratory rate combined with new restlessness) allows the nurse to intervene *before* a catastrophic event occurs, preventing complications and improving outcomes.
• Complex Prioritisation: Nurses rarely care for just one patient. They must constantly prioritise multiple patients, competing needs, and limited resources simultaneously.
• Evidence-Based Practice (EBP): It requires nurses to bravely question "routine practice" (e.g., "We've always done it this way") and adapt to use the most current, scientifically backed evidence.
• Safe Delegation and Escalation: Sound clinical reasoning supports the nurse in knowing what tasks are safe to delegate to unlicensed assistive personnel, and when a situation is severe enough to escalate to a physician immediately.
• Error Reduction: It drastically reduces medical errors caused by lazy assumptions, incomplete assessments, and "automatic" or robotic responses to patient care.

A true critical thinker embodies specific professional attitudes:

• Analysis: Breaking down complex, overwhelming information into smaller, meaningful components to understand the relationships.
• Interpretation: Determining exactly what assessment findings mean in the specific clinical context of this patient.
• Evaluation: Judging the credibility, reliability, and relevance of information (e.g., assessing if a patient is a reliable historian of their own health).
• Inference: Identifying logical, reasonable conclusions drawn from available evidence.
• Explanation: The ability to clearly, logically justify to peers or doctors why a particular action or decision was appropriate.
• Self-regulation: Continuously monitoring and correcting one's own reasoning to avoid bias.

Clinical reasoning is not linear; it is a continuous loop of assessment, action, and reflection.

1. Consider the patient situation and context: Who is the patient? What is their baseline? What are their current circumstances?
2. Collect relevant assessment information: Gather subjective and objective data.
3. Process the information: Group the data. Identify clinical patterns, abnormalities, and relationships (e.g., fever + cough + high WBC = infection).
4. Identify problems and establish priorities: What is the most life-threatening issue right now?
5. Set goals and decide on appropriate actions: What do we want to achieve, and what nursing interventions will get us there safely?
6. Act safely and communicate/escalate when required: Perform the intervention and communicate with the healthcare team.
7. Evaluate the patient's response: Did the intervention work? Did the patient's condition improve?
8. Reflect: What was effective? What changed? What should be done differently next time?

Data alone is useless unless the nurse gives it meaning through critical thinking.

• Do not treat every finding as an isolated fact; interpret findings together to see the whole picture.
• Compare current findings with the patient's baseline and previous observations. A blood pressure of 90/60 might be normal for a petite athlete, but indicates severe shock in an elderly patient whose baseline is 150/90.
• Distinguish subjective data (what the patient feels/says) from objective data (what you can measure/see).
• Look for trends: An increasing respiratory rate over four hours, a slowly falling blood pressure, altered mental status, or a gradual reduction in urine output are often far more important indicators of clinical deterioration than one single isolated abnormal value.
• Ask the critical questions: “What could explain these findings?” and “What dangerous, life-threatening condition must I exclude right now?”
• Validate unexpected findings: If a machine reads an impossibly low blood pressure, manually check it or check the patient's pulse and level of consciousness before panicking (treat the patient, not the monitor).

In a busy clinical environment, deciding what to do first is a critical survival skill.

• Use urgency, risk, and patient needs to determine what requires immediate attention.
• ABC's First: Airway, Breathing, and Circulation concerns generally require rapid, immediate assessment and intervention above all else.
• Prioritise actual or imminent threats to life before less urgent comfort, educational, or psychosocial needs.
• Consider high-risk areas: Rapid deterioration, safety risks (fall risk, suicide risk), severe pain, acute infection, active bleeding, and sudden neurological changes (stroke signs).
• Reassess priorities continuously: Patient conditions are dynamic. What was a low priority an hour ago can become an emergency now.
• Escalate appropriately: Never hesitate to escalate when a problem exceeds your personal nursing scope, available resources, or if the patient is not responding as expected to treatment.

When faced with a clinical dilemma, walk through these structured steps:

1. Define the problem: What exactly is happening right now?
2. Gather evidence: What do I definitively know, and what vital information is currently missing?
3. Generate alternatives: What different pathologies or issues could be causing this presentation?
4. Assess risk: What is the worst plausible outcome for the patient if I delay action?
5. Choose an action: What is the safest, most evidence-informed intervention I can perform right now?
6. Communicate and escalate: Who needs to know about this immediately?
7. Evaluate: Did the patient improve? If not, reassess and change the plan immediately.

Human brains use mental shortcuts. In nursing, these shortcuts (biases) can be fatal. Be aware of these common traps:

Scenario: A 68-year-old patient admitted with pneumonia becomes acutely restless. Their respiratory rate (RR) increases from 22 to 32 breaths/min, oxygen saturation (SpO₂) falls from 95% to 88% on their currently prescribed oxygen, heart rate (HR) rises to 118 beats/min, and the patient suddenly becomes confused.

Communication is the purposeful, deliberate exchange of vital information, clinical concerns, decisions, and responsibilities among healthcare professionals.

• Effective communication must be clear, concise, timely, accurate, respectful, and entirely patient-centred.
• It occurs through various modalities: verbal shift reports, handovers, legal documentation, telephone calls, electronic medical records, formal referrals, and multidisciplinary team discussions.
• The ultimate goal: It is not simply to transmit information into the void; it is to create shared understanding across the team that results in coordinated, safe patient action.

Communication breakdown is one of the leading root causes of sentinel events (incidents resulting in death or serious harm) in hospitals.

• Many clinical errors occur directly when important information is missing, misunderstood, delayed, or simply not acted upon.
• Poor handover can lead to duplicated work, totally missed life-saving treatments, delayed escalation of care, and highly unsafe transitions of care between units.
• Clear communication supports the seamless continuity of care across different shifts, hospital departments, and distinct professional groups (nurses, doctors, physios, pharmacy).
• Speaking up about clinical deterioration is a mandatory, professional patient-safety behaviour. Silence is dangerous.
• Closed-loop communication confirms that critical information was accurately received and thoroughly understood.

1. Be prepared: Before picking up the phone, know the patient's exact identity, current diagnosis, most recent vital signs, relevant medical history, and have your specific immediate concern clearly formulated. Have the patient's chart in front of you.
2. Lead with the reason for contact when the situation is urgent. Don't bury the lead. (e.g., "I am calling because the patient is in respiratory distress," not "Hi, how was your weekend, let me tell you a long story about bed 4...")
3. Use objective data rather than vague, emotional descriptions. Avoid saying “the patient looks bad.” Say, “The patient is pale, diaphoretic, and their systolic BP has dropped to 80.”
4. State what you need clearly: Do you need a bedside review? A new prescription? A diagnostic investigation? Transfer to ICU? Clarification of an order? Or an urgent intervention?
5. Be respectful and assertive, especially when raising safety concerns. Do not be intimidated into silence.
6. Document all important communication, resulting decisions, and follow-up plans according to your local facility policy.
7. Confirm instructions and boldly clarify any ambiguity. If an order sounds wrong, ask.

Do not wait for a patient to code. Escalate immediately if you observe:

• New or worsening abnormal vital signs (e.g., hypotension, extreme tachycardia).
• An acute change in mental status, confusion, or a drop in the level of consciousness (Glasgow Coma Scale changes).
• New respiratory distress, sudden hypoxia, or a significant change in the work of breathing.
• Chest pain, signs of severe bleeding, new-onset seizures, or signs of circulatory shock.
• Unexpected deterioration or a complete failure to respond to current medical treatment.
• A deep concern that a prescribed intervention may be unsafe or inappropriate for this specific patient.
• When your nursing "gut feeling" or clinical assessment indicates a risk that requires a higher level of clinical review.

SBAR is a highly structured communication framework designed to logically organise important clinical information. It helps reduce irrelevant, rambling information and makes urgent communication crystal clear and easy to follow for the receiver.

When handing over care to another nurse, use a structured format so the receiving provider can act without repeatedly searching the chart for essential information. Include:

• Patient identification and location.
• Current clinical status and immediate concerns.
• Relevant diagnosis and background.
• Allergies and significant risks (e.g., High fall risk, violent behaviour).
• Current treatment and response.
• Recent observations and important pending investigations.
• Outstanding nursing actions (e.g., "He still needs his 14:00 dose of IV antibiotics").
• Specific escalation triggers and expected follow-up.

This ensures instructions are heard, understood, and executed perfectly. It prevents fatal medication errors.

1. Sender states the message or instruction clearly.
2. Receiver listens and explicitly confirms understanding by repeating it back.
3. Receiver clarifies critical information if necessary.
4. Action is completed.
5. Outcome is communicated back to the relevant team member to close the loop.

Example:
Doctor: “Give 500 mL normal saline IV over 30 minutes.”
Nurse: “Confirmed: I will give 500 mL normal saline IV over 30 minutes.”
(After completion)
Nurse: “The 500mL normal saline infusion is complete; the patient's BP is now improved to 104/66 mmHg.”

• Noise/interruptions: Solution ➔ Move to a quiet, suitable environment when doing handovers.
• Unclear language: Solution ➔ Use plain, precise, universally understood clinical language.
• Hierarchy/fear: Solution ➔ Use respectful assertiveness and standardized patient-safety language (like CUS).
• Information overload: Solution ➔ Prioritise relevant facts and use the SBAR structure to filter the noise.
• Assumptions: Solution ➔ Always verify understanding and clarify (read-back orders).
• Poor documentation: Solution ➔ Meticulously record important assessments, communication, and agreed plans.
• Fatigue/workload: Solution ➔ Rely on structured handovers and mandatory read-backs for high-risk instructions when exhausted.

CUS is a structured communication tool that helps a nurse escalate a concern when their initial communication has been ignored or has not produced an adequate, safe response from a provider.

Use professional judgement and follow the strict escalation pathway of your healthcare facility if the issue is not resolved.

Scenario: A 55-year-old postoperative patient suddenly develops severe chest pain and shortness of breath.

• Observations: HR 122/min; RR 30/min; BP 88/54 mmHg; SpO₂ 86% on oxygen; patient is pale and extremely anxious.
• Background: Abdominal surgery 12 hours ago; no known cardiac history.

Task: Formulate a 30-60 second SBAR call. State your assessment clearly (e.g., "I suspect a pulmonary embolism or myocardial infarction") and make a clear recommendation ("I need you at the bedside immediately with the crash cart").
Discuss: What information should NOT be included? (e.g., Their diet order, who their next of kin is, or complaints about how busy the ward is—stick purely to the life-threatening crisis).

• Critical thinking transforms raw assessment data into safe, actionable clinical decisions.
• Good nurses continuously reassess, relentlessly question assumptions, and are vigilant in recognizing clinical deterioration early.
• Effective communication must be timely, exceptionally clear, respectful, objective, and driven by action.
• SBAR provides a universally understood, simple structure for urgent calls, shift handovers, and clinical escalation.
• Always identify exactly what you need from the receiving healthcare provider during a call.
• Always use closed-loop communication for receiving important instructions and navigating high-risk situations.
• Patient safety must always be the ultimate guiding star for both your clinical reasoning and your professional communication.

• American Nurses Association. Nursing: Scope and Standards of Practice. 4th ed. ANA; 2021.
• World Health Organization. Patient Safety Curriculum Guide: Multi-professional Edition. WHO; 2011.
• World Health Organization. Global Patient Safety Action Plan 2021–2030. WHO; 2021.
• Institute for Healthcare Improvement. SBAR Tool: Situation–Background–Assessment–Recommendation.
• QSEN Institute. Quality and Safety Education for Nurses: competencies in communication, safety and evidence-based practice.