Postoperative regression of left ventricular dimensions in aortic insufficiency: a long-term echocardiographic study
P Fioretti,
J Roelandt,
M Sclavo,
S Domenicucci,
M Haalebos,
E Bos,
and
PG Hugenholtz
The ability of preoperative M-mode echocardiography to predict the clinical course and the decrease in left ventricular size was assessed in 42 patients after uncomplicated valve replacement for isolated aortic insufficiency. During follow-up study, one patient died of chronic heart failure. The New York Heart Association functional class of the 41 survivors improved from 2.4 to 1.2. All patients had a preoperative M-mode echocardiogram. Serial echocardiographic measurements, available in 33 patients, showed a sustained decrease in left ventricular end-diastolic dimension after the first postoperative year from 73 +/- 8 to 57 +/- 9 mm at 6 to 12 months and to 53 +/- 9 mm at 3 years postoperatively (p less than 0.01). Left ventricular cross-sectional area decreased from 31 +/- 8 to 26 +/- 7 cm2 and then to 23 +/- 5 cm2 at the latest follow-up study (p less than 0.01). At 3 years postoperatively, M-mode echocardiograms were available in 37 patients: 24 had a normal left ventricular dimension (group 1), while 13 still had an enlarged left ventricle (group 2). The clinical course in these two groups was similar. The best preoperative predictor of persistent left ventricular enlargement was the end-diastolic dimension (p less than 0.05), whereas fractional shortening and the end-diastolic radius/thickness ratio were not predictive.(ABSTRACT TRUNCATED AT 250 WORDS)
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