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(Circulation. 2002;106:I-198.)
© 2002 American Heart Association, Inc.

Thoracic Transplantation and Mechanical Support for Congestive Heart Failure

Predictors of Severe Right Ventricular Failure After Implantable Left Ventricular Assist Device Insertion: Analysis of 245 Patients

Yoshie Ochiai, MD; Patrick M. McCarthy, MD; Nicholas G. Smedira, MD; Michael K. Banbury, MD; Jose L. Navia, MD; Jingyuan Feng, MS; Amy P. Hsu, MS; Michael L. Yeager, RN; Tiffany Buda, RN; Katherine J. Hoercher, RN; Michael W. Howard, MD; Masami Takagaki, MD, PhD; Kazuyoshi Doi, MD; Kiyotaka Fukamachi, MD, PhD

From the Department of Biomedical Engineering, Lerner Research Institute (Y.O., P.M.M., M.T., K.D., K.F.), the Department of Thoracic and Cardiovascular Surgery, Kaufman Center for Heart Failure (P.M.M., N.G.S., M.K.B., J.L.N., M.L.Y., T.B., K.J.H., M.W.H.), and the Transplant Center (P.M.M., J.F., A.P.H.), The Cleveland Clinic Foundation, Cleveland, Ohio.

Correspondence to Patrick M. McCarthy, MD, Department of Thoracic and Cardiovascular Surgery/F25, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195. E-mail MCCARTP{at}ccf org

Abstract

Background Insertion of an implantable left ventricular assist device (LVAD) complicated by early right ventricular (RV) failure has a poor prognosis and is largely unpredictable. Prediction of RV failure after LVAD placement would lead to more precise patient selection and optimal device selection.

Methods and Results We reviewed data from 245 patients (mean age, 54±11 years; 85% male) with 189 HeartMate (77%) and 56 Novacor (23%) LVADs. Ischemic cardiomyopathy predominated (65%), and 29% had dilated cardiomyopathy. Overall, RV assist device (RVAD) support was required after LVAD insertion for 23 patients (9%). We compared clinical and hemodynamic parameters before LVAD insertion between RVAD (n=23) and No-RVAD patients (n=222) to determine preoperative risk factors for severe RV failure. By univariate analysis, female gender, small body surface area, nonischemic etiology, preoperative mechanical ventilation, circulatory support before LVAD insertion, low mean and diastolic pulmonary artery pressures (PAPs), low RV stroke work (RVSW), and low RVSW index (RVSWI) were significantly associated with RVAD use. Elevated PAP and pulmonary vascular resistance were not risk factors. Risk factors by multivariable logistic regression were preoperative circulatory support (odds ratio [OR], 5.3), female gender (OR, 4.5), and nonischemic etiology (OR, 3.3).

Conclusions The need for circulatory support, female gender, and nonischemic etiology were the most significant predictors for RVAD use after LVAD insertion. Regarding hemodynamics, low PAP and low RVSWI, reflecting low RV contractility, were important parameters. This information may lead to better patient selection for isolated LVAD implantation.

Key Words: cardiomyopathy • heart-assist device • heart failure • surgery

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