TCTAP A-078 Short- and Long-term Outcome of Alcohol Septal Ablation for Hypertrophic Obstructive Cardiomyopathy in Patients with Mild Left Ventricular Hypertrophy: A Propensity Score Matching Analysis
Journal of the American College of Cardiology(2019)
摘要
Aims Based on European guidelines, alcohol septal ablation (ASA) for hypertrophic obstructive cardiomyopathy (HOCM) is indicated only in patients with interventricular septum (IVS) thickness >16 mm. The aim of this study was to evaluate the short- and long-term outcomes in ASA patients with mild hypertrophy (IVS <= 16 mm). Methods and results We retrospectively evaluated 1505 consecutive ASA patients and used propensity score to match 172 pairs (344 patients) in groups IVS <= 16mm or IVS > 16 mm. There was no occurrence of post-ASA ventriculoseptal defect in the whole cohort (n = 1505). Matched patients had 30-day mortality rate 0% in IVS <= 16mm group and 0.6% in IVS > 16mm group (P = 1). Patients in IVS <= 16mm group had more ASA-attributable early complications (16% vs. 9%; P = 0.049), which was driven by higher need for pacemaker implantation (13% vs. 8%; P = 0.22). The mean follow-up was 5.4 +/- 4.3 years and the annual all-cause mortality rate was 1.8 and 3.2 deaths per 100-patient-years in IVS <= 16 group and IVS > 16 group, respectively (log-rank test P = 0.04). There were no differences in symptom relief and left ventricular (LV) gradient reduction. Patients with IVS <= 16mm had less repeated septal reduction procedures (log-rank test P = 0.03). Conclusion Selected patients with HOCM and mild hypertrophy (IVS <= 16 mm) had more early post-ASA complications driven by need for pacemaker implantation, but their long-term survival is better than in patients with IVS >16 mm. While relief of symptoms and LV obstruction reduction is similar in both groups, a need for repeat septal reduction is higher in patients with IVS > 16 mm.
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关键词
Alcohol septal ablation,Prognosis,Survival,Hypertrophy
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