Copyright © 1988 by the European Society of Cardiology.
© 1988 The European Society of Carkology
Functional status and left ventricular performance late after valve replacement for aortic stenosis. Relation to preoperative data
Department of Thoracic and Cardiovascular Surgery, Skejby Sygehus/Aarhus University Hospital, DK-8200 Aarhus N, Denmark
Department of Clinical Physiology and Nuclear Medicine, Aarhus Kommunehospital/ University Hospital DK-8000 Aarhus C, Denmark
Received 15 April 1988; revised 6 June 1988; .
Address for Correspondence:Ole Lund, M.D., Department of Thoracic and Cardiovascular Surgery, Skejby Sygehus/Aarhus University Hospital, Brendstrupgaardsvej, DK-8200 Aarhus N, Denmark
Abstract
Relations between preoperative data and status at one- and 10-year control and left ventricular performance (radionuclide angiocardiography) at follow-up 10–17 years (mean 12 years) after valve replacement (1965–73) for aortic stenosis were studied. Marked improvements at one-year were noted for New York Heart Association (N YHA) functional classes, cardiothorac index (CTI), and ECG hypertrophy (Romhilt-Estes) score. One-year status did not influence that at 10 years. In 59 patients who were in N YHA class I at one year, class I was maintained in 75% of those who were in class II preoperatively, compared with 47% of those who had been in class III, and 23% of those who had been in class IV, (P > 0.05). The same relation to preoperative level was found for patients with CTI 
0-50 at one-year control. The ECG score did not change after the first year. Left ventricular hypertrophy (ECG score 4) was present in 90% and 84% of the patients at one and 10 years, respectively. Ejection fraction (EF) and peak filling rate (PFR) at follow-up were (mean±SD)65±13% and 314 ± 1.05 end-diastolic volume s-1, respectively; only 13 patients had a radionuclide study within the normal range for all parameters measured. A normal study was found predominantly inpatients with complete regression of hypertrophy. Multiple linear regression models incorporating preoperative data allowed calculation of predicted EF (65 ±9) and PFR (3-17±0.92) which did not differ from the measured
values. Functional status and left ventricular systolic and diastolic performance late after the operation depended closely on preoperative status. Improvements noted at one year were onlytemporary inpatients with preoperative advance disease. Normalleft ventricular performance late after valve replacement was related to complete reversibility of hypertrophy. Our results argue for operation in minimally symptomatic patients.
Key Words: Aortic stenosis, • heart valve replacement, • radionuclide angiocardiography, • left ventricular function, • late morbidity.
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