General practitioners' reasoning when considering the diagnosis heart failure: a think-aloud study

Area of Science:

• Cardiology
• General Practice
• Clinical Diagnostics

Background:

• Diagnosing chronic heart failure (CHF) presents challenges, particularly in early or mild cases.
• Current European guidelines for CHF diagnosis are not always easily implemented in routine general practice.

Purpose of the Study:

• To compare general practitioners' diagnostic reasoning in suspected CHF cases with European guideline recommendations.
• To identify discrepancies in diagnostic approaches used by general practitioners.

Main Methods:

• A think-aloud technique was employed with 15 general practitioners.
• Practitioners reasoned about six authentic case vignettes of suspected CHF, with information revealed in five steps.
• Diagnostic arguments were analyzed and compared against European guidelines.

Main Results:

• Ejection fraction and chest X-ray findings (cardiac enlargement, pulmonary congestion) were common diagnostic arguments.
• Echocardiography information was not utilized in one-third of diagnostic situations.
• Normal electrocardiography was infrequently used to argue against CHF; other cardiovascular diseases were frequently considered.

Conclusions:

• Clinical information was not used as extensively as recommended by guidelines.
• General practitioners require further education on utilizing echocardiography for CHF diagnosis.
• Guidelines should emphasize the importance of other cardiovascular diseases and clarify diastolic heart failure diagnosis.