A clinical role for right ventricular endomyocardial biopsy

Area of Science:

• Cardiology
• Pathology
• Medical Diagnostics

Background:

• Uncertainty exists regarding the clinical utility of endomyocardial biopsy (EMB) for diagnosing and managing primary myocardial dysfunction.
• Right ventricular EMB is a procedure performed to investigate myocardial disorders.

Purpose of the Study:

• To determine the clinical utility of right ventricular EMB in patients with suspected primary myocardial dysfunction.
• To assess the diagnostic yield of EMB across different clinical presentations.

Main Methods:

• Retrospective review of clinical records and EMB findings for 21 consecutive patients.
• Patients categorized into four groups based on clinical indications: dilated cardiomyopathy, non-dilated heart failure, cardiomegaly, and suspected hypertrophic cardiomyopathy (HCM).

Main Results:

• EMB showed non-specific features compatible with dilated cardiomyopathy in Groups 1 and 3.
• Specific diseases, including amyloidosis and endomyocardial fibrosis, were identified in 2 of 3 patients in Group 2.
• EMB findings were diagnostic or suggestive of HCM in 5 of 6 patients in Group 4.

Conclusions:

• Endomyocardial biopsy is a clinically useful diagnostic tool for patients with suspected primary myocardial disorders.
• EMB can identify specific etiological causes of myocardial dysfunction, influencing patient management.