Pressure damping, a "billowing" septum, and an eerie silence: perioperative, intermittent obstruction of a mitral valve prosthesis.
This case, involving a 74 year old man who underwent mitral valve and aortic valve replacements, provides detailed insight into the perioperative echocardiographic and haemodynamic changes occurring when a mitral valve prosthesis intermittently obstructs. It illustrates the early sequence of electromechanical dissociation which would lead to cardiac arrest should a tilting disc prosthesis be immobilised in the closed position.
Keeble
W
W
Department of Medical Cardiology, Royal Infirmary, 10 Alexandra Parade, Glasgow G31 2ER, UK.
Cobbe
S M
SM
D000368:Aged; D004452:Echocardiography; D004562:Electrocardiography / Q000379:methods; D006349:Heart Valve Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008943:Mitral Valve; D011475:Prosthesis Failure