The Journal of Thoracic and Cardiovascular Surgery, Vol 76, 43-45, Copyright © 1978 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
Left ventricular-coronary sinus fistula following repeated mitral valve replacements
DC Miller, JN Schapira, EB Stinson and NE Shumway
After mitral valve replacement, symptomatic deterioration and new murmurs
characterstistic of atrioventricular valvular regurgitation are usually the
result of periprosthetic leaks or prosthetic dysfunction with or without
endocarditis. In the case which we are reporting, an iatrogenic fistula
between the left ventricle and coronary sinus was responsible for the
murmur and symptoms. This type of shunt has not been previously reported.
Thorough debridement of the anulus is necessary during mitral valve
replacement; additionally, previously implanted prostheses are occasionally
embedded in the endocardial wall and must be excised. Hematoma in the
atrioventricular groove and perforations of the posterior left ventricular
wall are widely recognized complications of mitral valve replacement.
Similar mechanisms of injury can cause other problems such as left
ventricular- right atrial communications and the unique anatomic shunt
described in this report.