Minimizing mistakes in clinical diagnosis

Area of Science:

• Medical Diagnostics
• Pathology
• Healthcare Quality Improvement

Background:

• Medical technology has advanced significantly over 30 years, yet diagnostic accuracy has not proportionally improved.
• Misdiagnosis rates remain a persistent challenge in healthcare.
• Autopsies are crucial for evaluating diagnostic accuracy, but autopsy rates are declining.

Purpose of the Study:

• To assess diagnostic accuracy by comparing clinical diagnoses with autopsy findings.
• To identify the frequency and types of diagnostic discrepancies in hospital deaths.
• To investigate the underdiagnosis of specific critical conditions like pulmonary thromboembolism and myocardial infarction.

Main Methods:

• Analysis of 444 autopsy reports from Ljubljana University Hospital for deaths within 24 hours of admission or related to surgery.
• Comparison of clinical diagnoses with postmortem findings using the WHO's International Classification of Diseases (ICD) ABC system.
• Categorization of agreement into complete, partial, or total disagreement, and assessment of documentation completeness.

Main Results:

• Complete agreement between clinical and postmortem diagnoses was found in 48.87% of cases.
• Partial and total diagnostic disagreements occurred in 22.74% and 13.5% of cases, respectively.
• Pulmonary thromboembolism (61%), myocardial infarction (24%), and heart failure (33%) were frequently underdiagnosed clinically.

Conclusions:

• Significant diagnostic discrepancies persist despite technological advancements.
• Autopsy findings reveal a high rate of underdiagnosis for critical conditions, impacting patient outcomes.
• Improving diagnostic accuracy requires a focus on specific diseases and potentially increasing autopsy utilization for quality assessment.