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心律失常是肥厚梗阻型心肌病(hypertrophic obstruetive cardiomyopathy,HOCM)经皮间隔心肌消融术(percutaneous transluminal septal myocardial ablation,PTSMA)治疗的主要并发症.现总结5例患者PTSMA前、后心电图检查结果.