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目的探讨急性心肌梗死(AMI)患者心率减速力(DC)与心率变异(HRV)、心率震荡(HRT)的相关性。方法 62例窦性心律的AMI患者和51例非AMI对照组进行24h动态心电图检查,离线计算DC、HRV时域指标、HRT的两个参数震荡初始(TO)和震荡斜率(TS)。结果 AMI患者的DC值、HRV降低;HRT减弱;且DC与时域指标SDNN、RMSSD、pNN50及TS呈显著相关(p<0.01)。结论 DC指标和HRV、TS指标有较好的相关性,DC可作为自主神经功能检测的指标。
Objective To investigate the relationship between heart rate deceleration (DC) and heart rate variability (HRV) and heart rate turbulence (HRT) in patients with acute myocardial infarction (AMI). Methods Sixty-two AMI patients with sinus rhythm and 51 non-AMI control subjects underwent 24-hour Holter monitoring. Off-line DC and HRV time-domain parameters, two parameters of HRT, oscillatory initiation (TO) and concussion slope (TS) were calculated. Results The DC value and HRV of AMI patients decreased and HRT decreased. The correlation between DC and time domain indexes of SDNN, RMSSD, pNN50 and TS was significant (p <0.01). Conclusion The DC and HRV, TS indicators have a good correlation, DC can be used as an indicator of autonomic nerve function.