[Left ventricular performance after patch reconstruction of the left ventricular wall for postinfarction left ventricular aneurysms].
Left ventricular performance in patients with a left ventricular aneurysm (LVA) treated with patch reconstruction is largely unknown. This study consisted of 15 patients, 14 men and 1 woman, with the average age of 59 +/- 8.5 years. The resected area of LVA was 40 +/- 27 cm2. The area of the woven Dacron patch used for reconstruction was 57 +/- 19% of the resected area including the sewing rim. The EF (Ejection Fraction, 1/3FF (Filling Fraction) and PFR (Peak Filling Rate) were calculated by 99mTc equilibrium cardiac pool scintigraphic images. The A/R ratio (peak velocity during atrial kick phase/peak velocity during the rapid filling phase) was measured using Doppler echocardiography, at the mitral orifice level. These parameters were determined before and 1 to 2 months after the operation. The time course was followed for A/R ratios. The preoperative resting global EF was 0.28 +/- 0.14 (0.44 +/- 0.13 for the contractile area) and the EF during exercise was 0.31 +/- 0.14. Resting and exercise EFs improved significantly (p < 0.01) to 0.40 +/- 0.11 and 0.43 +/- 0.10 postoperatively. The 1/3FF (%) and PFR (/sec) were low before operation (1/3FF, 11.3 +/- 8.3; PFR, 1.2 +/- 0.47). Postoperatively, the 1/3FF rose to 14.8 +/- 9.3 and the PFR showed a significant (p < 0.05) increase to 1.6 +/- 0.6. The A/R ratio significantly (p < 0.05) improved from preoperative 1.76 +/- 0.46 to 0.95 +/- 0.11 on the 3rd postoperative day. This improvement was maintained until the late postoperative period, with a value of 1.14 +/- 0.29 at month 16.(ABSTRACT TRUNCATED AT 250 WORDS)
Kawata
T
T
Department of Surgery III, Nara Medical College, Kashihara, Japan.
Kawachi
K
K
Kitamura
S
S
D000368:Aged; D003971:Diastole; D005260:Female; D006322:Heart Aneurysm / Q000503:physiopathology / Q000601:surgery*; D006352:Heart Ventricles / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications*; D013599:Systole; D016277:Ventricular Function, Left