Midterm Results after Septal Reshaping for Anteroseptal Scars
Background: Midterm clinical and morphologic results of the septal-reshaping exclusion of anteroseptal dyskinetic or akinetic areas were evaluated.
Methods: From January to June 2003, 44 patients with myocardial infarction following left anterior descending coronary artery (LAD) occlusion underwent septal reshaping. The mean ( ± SD) New York Heart Association (NYHA) class of the patients at admission was 2.7 ± 0.9. Angina was referred in 21 cases. The incision was started at the apex and directed parallel to the LAD toward the base of the heart. The septum was rebuilt with 1 or 2 U-stitches passed from the inside to join the anterior wall to the septum by starting as high as possible where the scar began and continuing in an oblique direction toward the new apex. An oval polyethylene terephthalate fiber (Dacron) patch was then sutured from the septum (at the end of the direct suture through the border with the inferior septum) to the anterior wall (between the healthy wall and the scarred wall) and up to the new apex.
Results: The 30-day mortality rate was 2.2% (1 patient, due to the failure of a previously implanted defibrillator). Three patients experienced acute renal failure. No patient had restrictive syndrome. After a mean follow-up period of 8.5 ± 4.9 months (range, 4-22 months), the mean NYHA class improved from 2.7 ± 0.9 to 1.6 ± 0.5 (P < .001). The 18-month survival rate and the probability of being alive in NYHA class I or II were 93.2% ± 2.0% and 90.9% ± 4.3%, respectively. Echocardiographic results showed reductions in the left ventricle volume with a normalization of the stroke volume. The diastolic longitudinal length remained unchanged, and the diastolic sphericity index was reduced but not significantly.
Conclusions: At 1 year after surgery, the good clinical and morphologic results demonstrate the safety and effectiveness of septal reshaping for anteroseptal scars.
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