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Ann Thorac Surg 2004;78:1635-1642
© 2004 The Society of Thoracic Surgeons
a Division of Cardiac Surgery, Boston, MA, USA
b Cardiovascular Division, Boston, MA, USA
c Division of Cardiac Anesthesia, Brigham and Women's Hospital, Boston, Massachusetts, USA
Accepted for publication May 4, 2004.
* Address reprint requests to Dr Byrne, Division of Cardiac Surgery, Brigham and Women's Hospital, 75 Francis St, Boston, MA 02115, USA
jbyrne{at}partners.org
BACKGROUND: This study evaluates the significance of tricuspid regurgitation (TR) on long-term survival as detected by intraoperative transesophageal echocardiography at the time of orthotopic heart transplantation. Although significant (2+ to 4+) TR after orthotopic heart transplantation is rare, its influence on long-term survival is unknown, warranting further investigation.
METHODS: Between January 1992 and July 2001, 181 consecutive patients underwent orthotopic heart transplantation. Tricuspid regurgitation was graded by intraoperative transesophageal echocardiography after final separation from cardiopulmonary bypass in 130 of 181 patients (72%).
RESULTS: Although 80% (104/130) of patients had either no (0, n = 77) or trace (1+, n = 27) TR, 9% (12/130 patients) had mild (2+), 10% (13/130 patients) had moderate (3+), and 0.8% (1/130 patients) had severe (4+) TR. The severity correlated strongly with the presence of right ventricular dysfunction (p < 0.001). In a multivariate regression model, gender mismatch (p = 0.002) and right ventricular dysfunction (p < 0.001) were independent predictors for equal to or greater than mild (2+ to 4+) TR (p = 0.015). Although the degree of recipient pulmonary vascular resistance did not influence the grade (p = 0.600), higher pulmonary vascular resistance tended to increase the severity of TR in the setting of prolonged donor ischemic times (p = 0.054). Proportional hazards regression analysis demonstrated significantly decreased survival for patients with mild or greater (2+ to 4+) TR detected by transesophageal echocardiography at the time of transplantation (p < 0.001) and RV dysfunction (p = 0.023).
CONCLUSIONS: Even mild (
2+) TR identified by transesophageal echocardiography at the time of orthotopic heart transplant predicts poor late survival, suggesting a possible role for concomitant tricuspid valve repair at the time of transplant. Whether or not tricuspid valve repair will improve long-term survival is unknown.
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