Prognostic value of acute heart block after alcohol septal ablation in patients with hypertrophic obstructive cardiomyopathy
10.3760/cma.j.issn.0253-3758.2009.02.015
- VernacularTitle:肥厚型梗阻性心肌病化学消融术中急性房室传导阻滞的预后价值
- Author:
Ai-Jie HOU
1
;
Na DUAN
;
Lin YANG
;
Hui-Jun LI
;
Zhan-Quan LI
;
Long YUAN
;
Ru-Ming GUAN
;
Ying LIU
Author Information
1. 辽宁省人民医院
- Keywords:
Cardiomyopathy,hypertrophic;
Catheter ablation;
Heart block
- From:
Chinese Journal of Cardiology
2009;37(2):149-151
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the prognostic value of acute beart block (AHB) after percutaneous transluminal septal myocardial ablation (PTSMA) in patients with hypertrophic obstructive cardiomyopathy (HOCM). Methods Ninety-four HOCM patients underwent PTSMA were included in this study. Twelve-lead electrocardiograms were obtained during and post PTSMA. Association between clinic events and incidence of post-PTSMA AHB was analyzed. Results AHB was induced in 26 patients by PTSMA and disappeared in 11 patients shortly post PTSMA, subacute intraventricular conduction disturbances was seen in 11 (42.3%), subacute I°AVB in 2(7.7% ) and subacute Ⅲ°AVB in another 2 (7.7%) patients. Among 68 patients without AHB during PTSMA, intraventricular conduction disturbances was evidenced in 14 patients (20.6% ), I°AVB in 2 (2.9% ) and Ⅲ°AVB in 1 patient (1.5%) after PTSMA. AHB patients with subacute heart block were associated with poor prognosis (conduction block duration was 42.00 h) while patients without AHB was associated with benign prognosis even with new onset of subacute heart block (conduction block duration was 7.33 h, P <0.01). Conclusion Patients with AHB during PTSMA are at higher risk for subacute heart block, especially intraventricolar conduction disturbances. AHB patients with subacute heart block were associated with poor prognosis and longer recovery time conducting system.
