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J Thorac Cardiovasc Surg 2002;124:979-983
© 2002 The American Association for Thoracic Surgery

Cardiothoracic Transplantation (TX)

Predictors of pericardial effusion after orthotopic heart transplantation

From the Department of Cardiovascular and Thoracic Surgery, University of Texas Southwestern Medical Center at Dallas, Tex.

Received for publication Sept 13, 2001. Revisions requested Jan 3, 2002; revisions received Jan 23, 2002. Accepted for publication Feb 7, 2002. Address for reprints: Michael E. Jessen, MD, Department of Cardiovascular and Thoracic Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8879 (E-mail: michael.jessen{at}utsouthwestern.edu).

Objectives: Pericardial effusion occurs frequently after orthotopic heart transplantation, but the causes of this complication have not been well described. This study was designed to identify factors predisposing toward the development of significant postoperative pericardial effusions in a large, single-institution population of orthotopic heart transplant recipients.
Methods: A retrospective review of more than 90 preoperative, intraoperative, and postoperative variables was conducted for 241 patients undergoing orthotopic heart transplantation from September 1988 to December 1999. Patients who had significant postoperative pericardial effusions develop were identified from postoperative echocardiograms by standard criteria. Factors associated with the development of significant pericardial effusions were determined by multivariate logistic regression analysis.
Results: Echocardiographic data were available for 203 of 241 transplant recipients. Forty-two patients (21%) had significant effusions develop. According to multivariate analysis, pericardial effusions were less likely to occur in recipients with a history of previous cardiac surgery (odds ratio 0.13, 95% confidence interval 0.05-0.36, P < .0001) and with greater weight (odds ratio 0.96, 95% confidence interval 0.94-0.99, P < .0048). Pericardial effusions were more likely to occur in patients who had received aminocaproic acid during the operation (odds ratio 5.92, 95% confidence interval 2.23-15.72, P < .0008). Patient survival and hospital length of stay did not differ between patients with and without postoperative pericardial effusions.
Conclusions: Postoperative pericardial effusions develop in approximately 20% of patients undergoing orthotopic cardiac transplantation. On the basis of the risk factors identified in this study, prevention may prove difficult, although avoidance of the intraoperative use of aminocaproic acid may be helpful.

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