Department of Cardiology, Hospital for Medical Rehabilitation, Gajeva 2, HR - 49217 Krapinske Toplice, Croatia, Croatia.
Cardiol Res Pract. 2009;2009:295376. doi: 10.4061/2009/295376. Epub 2009 Sep 1.
Background. It is known that after coronary artery bypass graft surgery (CABG) heart rate variability (HRV) becomes significantly decreased with a gradual recovery in a few months after surgery. However, literature data about the impact of the off-pump CABG on postoperative HRV are not complete. Therefore, the aim of this study was to analyze postoperative value of HRV in CABG patients operated on with off-pump versus on-pump coronary surgery. Methods. This study included 206 consecutive patients who underwent CABG. Sixty six patients (32%) were operated on off-pump while 140 patients (68%) were operated on using the machine for extracorporal circulation. HRV was analyzed from 24-hours Holter electrocardiogram recordings. Results. No significant differences in postoperative values of HRV variables were found between off-pump versus on-pump CABG patients (Mean RR interval 885 +/- 106 versus 879 +/- 125 ms, standard deviation of all normal R-R intervals 107 +/- 30 versus 105 +/- 34 ms, NS, total power 2298 +/- 2472 versus 2156 +/- 1913 ms(2), NS). Conclusions. The results of the study showed that there are no differences in HRV few months after surgery between patients operated on with off-pump versus on-pump CABG.
众所周知，冠状动脉旁路移植术（CABG）后心率变异性（HRV）显著降低，术后数月逐渐恢复。然而，关于非体外循环 CABG 对术后 HRV 影响的文献数据并不完整。因此，本研究旨在分析非体外循环与体外循环 CABG 术后 HRV 的术后价值。方法：本研究纳入了 206 例连续接受 CABG 的患者。66 例（32%）患者行非体外循环下手术，140 例（68%）患者行体外循环下手术。通过 24 小时动态心电图记录分析 HRV。结果：非体外循环与体外循环 CABG 患者术后 HRV 变量值无显著差异（平均 RR 间期 885 +/- 106 与 879 +/- 125 ms，所有正常 R-R 间期标准差 107 +/- 30 与 105 +/- 34 ms，NS，总功率 2298 +/- 2472 与 2156 +/- 1913 ms(2)，NS）。结论：研究结果表明，非体外循环与体外循环 CABG 术后数月 HRV 无差异。
