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为探讨手术后急性心肌梗死对心率变异性(HRV)的影响,分析33例手术后急性心肌梗死患者的短程心电图R-R间期的标准差(SDNN)及变异系数(CV)参数,并与35例同期手术后无心肌梗死患者进行比较。结果显示:心肌梗死组与非心肌梗死组SDNN、CV(20.32±9.71对37.17±13.63,2.60±0.95对4.63±1.82)差异有非常显著意义(P<0.01),心肌梗死死亡组(n=13)SDNN、CV显著降低于存活组(n=20)(16.37±9.34对23.79±16.45,2.64±0.98对3.69±1.31,P<0.01)。认为手术后急性心肌梗死患者的HRV越低,猝死率越高。
To investigate the effect of acute myocardial infarction on heart rate variability (HRV) after surgery, the standard deviation (SDNN) and coefficient of variation (CV) parameters of RR intervals in 33 patients with acute myocardial infarction after operation were analyzed and compared with 35 Patients with no myocardial infarction after surgery were compared. The results showed that the difference of SDNN and CV (20.32 ± 9.71 vs 37.17 ± 13.63, 2.60 ± 0.95 vs 4.63 ± 1.82) in myocardial infarction group and non-myocardial infarction group was significant (P <0.01), myocardial infarction death group (n = 13 ) SDNN, CV decreased significantly in survival group (n = 20) (16.37 ± 9.34 vs 23.79 ± 16.45, 2.64 ± 0.98 vs. 3.69 ± 1.31, P <0.01). The lower the HRV in patients with acute myocardial infarction after surgery, the higher the rate of sudden death.