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Ann Thorac Surg 2005;80:716-717
© 2005 The Society of Thoracic Surgeons

Case report

Complete Atrioventricular Block Decreases Left Ventricular Assist Device Flow Rate

Frédéric Collart, MD a , Pierre Dieuzaide, MD a , François Kerbaul, MD a , Annick Mouly-Bandini, MD a , Thierry G. Mesana, MD, PhD b , *

a Cardiac Surgery Department, La Timone University, Marseille, France
b The Ottawa Heart Institute, Ottawa, Ontario, Canada

Accepted for publication February 17, 2004.

* Address reprint requests to Dr Mesana, University of Ottawa Heart Institute, 40 Ruskin St, Room 340 2B, Ottawa, Ontario K1Y 4W7, Canada (Email: tmesana{at}ottawaheart.ca).

A 52-year-old man, living at home, had been on left ventricular assistance for 15 months with a Novacor pump (Worldheart, Ottawa, ON, Canada). Following the onset of effort dyspnea that had recently become worse, he was admitted to the hospital. A review of the pump showed that its flow rate had significantly decreased. An electrocardiogram showed a third-degree atrioventricular block. A pacemaker was implanted and the patient became asymptomatic immediately afterwards. This clinical case report shows the importance of satisfactory right ventricle filling in these patients. Right ventricle filling can be impaired by conduction disorders.




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