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  • Title: Partial left ventriculectomy: preoperative risk factors for perioperative mortality.
    Author: Bestetti RB, Moreira-Neto F, Brasil JC, Bombonato R, Sgarbieri RN, Haddad J.
    Journal: Int J Cardiol; 1998 Dec 01; 67(2):143-6. PubMed ID: 9891947.
    Abstract:
    This study aimed at determining risk factors for perioperative mortality for patients undergoing partial left ventriculectomy. Fourteen patients with end-stage congestive heart failure underwent partial ventriculectomy at our institution from February, 1995 to October, 1997. Mean age was 48+/-11 years, symptoms duration 44+/-34 months, New York Heart Association symptoms score 4+/-0, systolic blood pressure 97.69+/-20.06 mmHg, diastolic blood pressure 65.38+/-13.91 mmHg, heart rate 91+/-15 beats/min, furosemide daily dose 121.66+/-96.65 mg and captopril daily dose 68.75+/-76.76 mg. Seven (50%) patients needed inotropic support for hemodynamic stabilization. On echocardiography, left ventricular diastolic dimension was 81.71+/-11.92 mm. Left ventricular ejection fraction determined by radionuclide ventriculography or echocardiography was 16.71+/-5.13. At heart catheterization, mean right atrial pressure was 12.50+/-7.72 mmHg, mean pulmonary capillary wedge pressure 23.60+/-7.79 mmHg, and mean pulmonary artery pressure 34.10+/-12.81 mmHg. Twelve patients had idiopathic dilated cardiomyopathy and two patients had a globally dilated heart with single vessel coronary artery disease. Aneurysmectomy, mitral valve surgery or coronary artery bypass surgery were not performed in any patient. Four (28%) patients died: three in the operating theatre and one from low output syndrome 2 days after surgery. The proportion of patients operated on with cardiogenic shock was four (100%) in nonsurvivors and 0% in survivors (P=0.001). Inotropic support was necessary in three (30%) survivors and in four (100%) nonsurvivors (P=0.06). Thus, preoperative hemodynamic instability may be associated with perioperative mortality after partial left ventriculectomy.
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