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Usefulness of endomyocardial biopsy in tertiary care
Insights
Right ventricular endomyocardial biopsy rarely changes cardiac disease diagnosis or treatment. This cardiac diagnostic procedure has limited therapeutic impact for primary myocardial conditions, primarily serving clinical investigation.
Area of Science:
- Cardiology
- Pathology
Background:
- Endomyocardial biopsy is an invasive procedure used in cardiac disease evaluation.
- Its diagnostic and therapeutic utility in primary myocardial diseases requires further clarification.
Purpose of the Study:
- To assess the diagnostic yield and therapeutic impact of right ventricular endomyocardial biopsy in patients with cardiac disease.
Main Methods:
- Retrospective analysis of 143 patients undergoing right ventricular endomyocardial biopsy over 51 months.
- Evaluation of changes in clinical diagnosis and therapeutic alterations based on biopsy findings.
Main Results:
- 33% of biopsies changed the clinical diagnosis, with 38% of these changes based on nonspecific criteria.
- 22% of patients had therapeutic alterations, primarily immunosuppression for myocarditis with unproven benefit.
- Biopsy findings had limited impact on specific treatment decisions for most primary myocardial diseases.
Conclusions:
- Right ventricular endomyocardial biopsy has a limited role in guiding therapy for most primary myocardial diseases.
- The primary indications for endomyocardial biopsy remain clinical diagnosis and research investigation.
- Further research is needed to establish clear therapeutic guidelines based on endomyocardial biopsy results.
Abstract:
Over a 51-month period, 143 patients underwent right ventricular endomyocardial biopsy as part of their evaluation for cardiac disease. Of these, 82 patients presented with a clinical dilated cardiomyopathy, 28 patients with unexplained arrhythmia, 22 with other cardiomyopathies, 7 with anthracycline exposure, and 4 with miscellaneous indications. Overall, 47 of the 143 patients (33%) had findings on endomyocardial biopsy that changed the clinical diagnosis. Of these, 18 (38%) had a change in diagnosis based on nonspecific criteria. Although 32 of the 143 patients (22%) had specific therapeutic alterations based on the endomyocardial biopsy findings, the vast majority of these received immunosuppression for myocarditis, a therapy that is currently of unproven benefit. Therefore, endomyocardial biopsy is of limited therapeutic use for most patients with primary myocardial disease. Its current primary indications are for clinical diagnosis and investigation.
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