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目的 该文选择成功地行择其经皮腔空冠状动脉成形术的首次急性心肌梗死患者 ,进行心率变异检查 ,以了解择期PTCA对心率变异性的影响。方法 所有患者均于PTCA术前 1,2d及术后 1周、3个月进行2 4hHolter记录。HRV检查方法包括长时程 2 4h时域分析 (重取SDNN)和短时程 5min频域分析 (采取LFnorm、HFnorm和LF/HF)。结果 PTCA术后 1周与术前相比无明显变化。PTCA术后 3个月与术前相比有显著差异 ,其中SDNN、HFnorm和LFnorm有明显增高 (P <0 .0 5 ) ,LF/HF有明显降低 (P <0 .0 5 )。结论 AML接受择期PTCA有益于患者心率变异性的恢复 ,术后一周改善不显著 ,至术后 3个月有显著 ,至术后 3个月有显著改善。
Objective To evaluate the effect of elective PTCA on heart rate variability (HRV) in patients with first acute myocardial infarction who underwent percutaneous transluminal coronary angioplasty successfully. Methods All patients underwent 24 hHolter recording 1, 2 days before PTCA and 1 week and 3 months after PTCA. HRV examination methods include long-term 24 h time domain analysis (SDNN re-sampling) and short-range 5 min frequency domain analysis (LFnorm, HFnorm and LF / HF). Results There was no significant difference in one week after PTCA compared with that before operation. There was a significant difference between preoperative and postoperative PTCA at 3 months. The levels of SDNN, HFnorm and LFnorm were significantly increased (P <0.05), and LF / HF was significantly decreased (P <0.05). Conclusions AML patients undergoing elective PTCA are good for the recovery of heart rate variability. One week after operation, the improvement is not significant, reaching significant level at 3 months after operation and markedly improved at 3 months after operation.