Transaortic myectomy with concomitant procedures for HOCM yielded strong long-term outcomes, with 10-year survival of 80% compared to 87% for isolated myectomy, and early lethality of 2.0% vs 1.3%.
Cohort (n=125)
Absolute Event Rate: 80% vs 87%
BACKGROUND: In patients who underwent transaortic myectomy for hypertrophic obstructive cardiomyopathy (HOCM), we evaluated the role of concomitant procedures for short and long term outcome. METHODS: From 1985 to 2000, in 125 patients a myectomy according to Morrow was performed. A total of 75 patients (group I) had isolated HOCM: 37 females, 38 males, mean age 52.1 years (14-79). The 50 patients of group II - 22 females, 28 males, mean age 62.4 years (36-77)-had concomitant procedures: coronary artery bypass grafting (36), mitral valve repair (15), DeVega-plasty (1), ventricular septal infarction-closure (1). Follow-up data of a total of 680.9 years (mean 5.4) were analyzed. RESULTS: Postoperatively, left ventricular outflow tract gradients at rest and after ventricular premature beats were significantly reduced (P<0.001). Mean performance of survivors (112/125=89.6%) improved significantly (P<0.001). Perioperative complication rates: 10.7/12.0% (groups I/II), early lethality: 1.3/2.0%. Survival rates after 5/10 years were 93+/-3/87+/-6 and 80+/-7/80+/-7% for groups I and II, respectively. CONCLUSION: Long term results after surgical treatment of HOCM are convincing also if concomitant procedures are performed.
Minami et al. (Thu,) conducted a cohort in Hypertrophic obstructive cardiomyopathy (HOCM) (n=125). Transaortic myectomy with concomitant cardiac procedures vs. Isolated transaortic myectomy was evaluated on Survival rates after 10 years. Transaortic myectomy with concomitant procedures for HOCM yielded strong long-term outcomes, with 10-year survival of 80% compared to 87% for isolated myectomy, and early lethality of 2.0% vs 1.3%.
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