Acute right ventricular failure during aortic valvular operation due to mechanical problem in the right coronary artery.
BACKGROUND
When right ventricular failure occurs during aortic valvular operation, inadequate myocardial protection may be the culprit. However, other causes of right ventricular failure should be considered, such as air or particulate matter embolization. Right ventricular failure unexpectedly occurred during an aortic valvular operation, and the cause was found to be a mechanical problem with the right coronary ostium.


METHODS
A mechanical problem with the right coronary artery (RCA) occurred in 9 patients undergoing aortic valvular procedures, which included isolated aortic valve replacement (4 patients), aortic valve replacement and coronary artery bypass (1 patient), Bentall procedure (2 patients), aortic valve reconstruction (1 patient), and double valve replacement and coronary artery bypass (1 patient). Although myocardial protection was considered to be the cause, a mechanical problem was subsequently identified in the RCA, leading that artery to be bypassed with a segment of saphenous vein.


RESULTS
The 1 patient in whom the condition was not recognized at time of aortic valve operation died; at autopsy, a damaged and occluded right ostium was confirmed. The other 8 patients who had the RCA bypassed survived.


CONCLUSIONS
We conclude that when right ventricular failure unexpectedly occurs during an aortic valvular operation and does not improve with reperfusion, a mechanical problem in the RCA should be considered. In this situation we recommend that the RCA be bypassed with a segment of saphenous vein graft.
Salerno
T A
TA
Division of Cardiothoracic Surgery, State University of New York at Buffalo 14203, USA.
Bergsland
J
J
Calafiore
A M
AM
Cordell
A R
AR
Kon
N D
ND
Bhayana
J N
JN
D000208:Acute Disease; D000368:Aged; D001014:Aortic Aneurysm / Q000601:surgery; D001021:Aortic Valve / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000601:surgery; D002315:Cardiopulmonary Bypass; D003327:Coronary Disease / Q000209:etiology; D004617:Embolism / Q000209:etiology; D005260:Female; D006324:Heart Arrest, Induced / Q000009:adverse effects; D006333:Heart Failure / Q000209:etiology*; D006350:Heart Valve Prosthesis; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D012501:Saphenous Vein / Q000637:transplantation; D018497:Ventricular Dysfunction, Right / Q000209:etiology*