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Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease

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[What should physicians know about diagnostic testing?].

Norbert Donner-Banzhoff¹

¹Abteilung für Allgemeinmedizin, Präventive und Rehabilitative Medizin, Philipps-Universität Marburg. Norbert@staff.uni-marburg.de

Zeitschrift Fur Evidenz, Fortbildung Und Qualitat Im Gesundheitswesen

|October 1, 2011

Summary

Physicians often order diagnostic tests irrationally, not due to lack of knowledge but as a behavioral issue influenced by incentives and tradition. Improving clinical exposure and reflective practice can enhance rational test ordering.

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Area of Science:

Medical Education
Health Services Research
Cognitive Psychology

Background:

Rational criteria for ordering diagnostic tests are frequently unmet in clinical practice.
The issue extends beyond mere knowledge deficits, encompassing behavioral factors.
Traditional medical education may not adequately prepare students for critical diagnostic test utilization.

Observation:

Financial incentives, tradition, and patient expectations significantly influence diagnostic decisions.
Current academic teaching often prioritizes pathophysiology over critical appraisal of diagnostic utility.
Cognitive psychology insights into adaptive behavior offer a framework for understanding decision-making.

Findings:

Diagnostic test ordering is influenced by a complex interplay of knowledge, behavior, financial incentives, tradition, and patient expectations.
Increased clinical exposure and a "reflective practicum" in undergraduate curricula are proposed to foster critical attitudes.
Working environments and feedback mechanisms play a crucial role in shaping clinicians' test-ordering habits.

Implications:

Reforming medical education to include more clinical experience and reflective practice is essential.
Addressing behavioral determinants and environmental factors is key to improving the rational use of diagnostic tests.
While foundational knowledge (e.g., Bayes' theorem) is important, behavioral and contextual factors are critical for optimizing diagnostic test utilization.