Author + information
- Received February 14, 1984
- Revision received June 12, 1984
- Accepted June 22, 1984
- Published online November 1, 1984.
- Declan D. Sugrue, MB, MRCP1,
- David R. Holmes Jr., MD, FACC*,1,
- Bernard J. Gersh, MB, ChB, DPhil, FACC1,
- William D. Edwards, MD, FACC1,
- Christopher J. McLaran, MB, FRACP1,
- Douglas L. Wood, MD1,
- Michael J. Osborn, MD, FACC1 and
- Stephen C. Hammill, MD, FACC1
- ↵*Address for reprints: David R. Holmes, Jr., MD, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905.
Percutaneous endomyocardial biopsy (right ventricle in 10, left ventricle in 2) was performed in 12 patients, aged 9 to 57 years, with serious ventricular arrhythmias occurring in the setting of normal cardiac anatomy and mechanical function. Light microscopic examination of tissue revealed histologic abnormalities in 11 patients, including myocardial cellular hypertrophy in 7, interstitial fibrosis in 5, endocardial fibrosis in 2, myocardial degenerative changes in 1 and increased interstitial cellularity in 1. One patient had histologic evidence of acute lymphocytic myocarditis. Thus, a majority of patients with serious ventricular arrhythmias and normal cardiac anatomy had histologic abnormalities, bringing into question the concept of primary electrical heart disease or idiopathic ventricular tachycardia.
- Received February 14, 1984.
- Revision received June 12, 1984.
- Accepted June 22, 1984.
- American College of Cardiology Foundation