Cognitive biases are systematic errors in thinking that can significantly impact clinical decision-making and compromise patient safety. Match the following clinical scenarios with the specific cognitive bias that best explains the physician's diagnostic or management error.
- A physician recently treated several cases of viral gastroenteritis and subsequently diagnoses a new patient with similar symptoms as having a viral infection, missing early acute appendicitis.Availability heuristic
- A hospitalist receives a patient from the emergency department with a preliminary diagnosis of 'heart failure exacerbation' and continues aggressive diuresis despite the patient developing a fever and purulent sputum.Anchoring bias
- A clinician firmly suspects a patient has systemic lupus erythematosus and heavily weights mildly positive antinuclear antibodies, while disregarding normal complement levels and an absence of other clinical criteria.Confirmation bias
- A resident hands off a patient by describing them as a 'difficult, anxious patient with a history of panic attacks,' leading the oncoming night team to inadequately evaluate the patient's new-onset tachycardia and hypotension.Framing effect
Cevap
The recent cluster of gastroenteritis cases matches the Availability heuristic; sticking rigidly to the initial emergency department diagnosis matches Anchoring bias; selectively weighting supportive laboratory data matches Confirmation bias; and the subjective handoff description altering clinical perception matches the Framing effect.
Each scenario describes a distinct cognitive bias. The availability heuristic is demonstrated when recent memorable cases (gastroenteritis) skew the clinician's estimate of a new diagnosis. Anchoring bias occurs when a clinician relies too heavily on an initial piece of information (heart failure diagnosis) and fails to adjust despite new, conflicting data. Confirmation bias is seen when a clinician selectively focuses on data (mildly positive ANA) that supports their favored diagnosis while ignoring contradictory findings. The framing effect occurs when the subjective presentation of a case ('anxious patient') alters the subsequent clinician's objective reasoning and decision-making.
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Human Factors and Cognitive Biases