摘要
目的研究高血压病患者搏动指数与心率变异的关系。方法对2002年12月1日至2003年3月31日期间我院119例住院高血压病患者的外周血压及心率变异指标进行测定,探讨搏动指数[(PI),定义为脉压(PP)除以舒张压(DBP)]与心率变异的关系。结果①不同的搏动指数组中,患者年龄、性别构成、收缩压和舒张压均不同。②搏动指数与心率变异指标:全部正常RR间期的标准差(SDNN)、24h内连续每5minRR间期平均值的标准差(SDANN)、低频功率与高频功率之比(LF/HF)的相关系数分别为-0.234、-0.267、-0.326,其P值分别<0.05、<0.01、<0.01。结论在搏动指数较大患者中,年龄较大,女性比例较高,收缩压较高,舒张压较低,且提示脉动指数变化与自主神经系统相关。
Objective To reveal the relationship between pulsatility index and heart rate variability in essential hypertension. Methods To quantify the relative magnitude of the pulsatility to diastolic pressure, we made use of the ratio of pulse pressure to diastolic blood pressure （PP/DBP）. The data of all patients who were diagnosed as hypertension from Dec 1 2002 to Mar 31 2003 were registered and analyzed. Results The age, gender composing, systolic blood pressure （SBP） and diastolic blood pressure （DBP） are different in different pulsatility index groups. The correlation coefficient of pulsatility index and SDNN,SDANN ,LF/HF are -0.234 （P〈0.05）,-0.267 （P〈0.01）,-0.326 （P〈0.01）.Condusions There are older patients, women in the group of greater pulsatility index than the group of smaller pulsatility index, and the SBP is enhanced in the former while the DBP is depressed. Both time domain analysis methods and frequency domain analysis methods indicate that the autonomic nervous system may be in association with variation of pulsatility index.
出处
《中国心血管病研究》
CAS
2005年第8期573-576,共4页
Chinese Journal of Cardiovascular Research
关键词
搏动指数
心率
高血压
自主神经系统
Pulsatility index
Heart rate
Hypertension
Autonomic nervous system
