正常小鼠高频心电图时域值和功率谱的研究  

STUDIES ON THE TIME DOMAIN AND POWER SPECTRUM OF HIGH FREQUENCY ECG IN NORMAL MICE

作　　者：艾洪滨[1] 崔希云[1] 唐琳[1] 朱卫平[1] 宁新宝[1] 杨秀侠 

机构地区：[1]山东师范大学生物系生理教研室,南京大学电子科学与工程系

出　　处：《生理学报》1996年第5期512-516,共5页Acta Physiologica Sinica

基　　金：山东省科委资助

摘　　要：本文用南京新博公司生产的ＮＨＥ－１０００型心电高频信息检测分析仪研究了正常小鼠（昆明种）高频心电图（ＨＦ－ＥＣＧ）的时域值和ＱＲＳ波群的功率谱。主要结果如下（以正导为例，－Ｘ±ＳＤ）：心率６０３±８８次／ｍｉｎ（ｎ＝７４）；Ｐ－Ｒ间期相对较长。为３４．９±４．７ｍｓ（ｎ＝５８），占心动周期的３４．９±４．９％，这与人类有很大的不同；ＱＲＳ波宽９．２±１．２ｍｓ，占心动周期的９．２±１．４％（ｎ＝７４），这一结果与以前的文献报道相差较大。Ｔ波宽１０．３±３．２ｍｓ，占心动周期的１０．３±３．２％；Ｑ－Ｔ间期１９．４±３．２ｍｓ，占心动周期的１９．５±３．６％；ＱＲＳ波群峰－峰值（Ｖｐ－ｐ）为１．４５６±０．４８０ｍＶ；Ｔ波高０．３３６±０．１１５ｍＶ；７３只动物Ⅱ导联高频切迹总数只有３个，扭挫２６个。Ⅱ导联ＱＲＳ波群的功率谱特点：０—８０Ｈｚ的相对能量为４５．４８±１５．３２％；８０—２００Ｈｚ为４３．９７±９．９５％；２００—３００Ｈｚ为８．８９±７．３８％；３００—１０００Ｈｚ为１．６６±２．７４％。The features of time domain and power spectrum of high frequency electtocardiogram (HF-ECG) were studied in normal Kunming mice using a microptocessor ECGsystem. The results were as follows (X±SD): (1) P-R interval was 34. 9± 4. 7 ms(n= 58), about one third of the cardiac cycle. (2) The duration and peak-to-peak amplitude of QRS complex were 9. 2 ± 1. 2 ms and 1. 456± 0. 480 mV (n=74) respec tively. (3) The duration and amplitude of T wave were 10. 2± 3. 2 ms and 0. 336±0. 115 mV, respectively (n= 58). (4) Q-T interval was 19. 4 ± 3. 2 ms (n=58),about one fifth of the cardiac cycle. (5) The total number of notches and slurs of leadsⅡ of 73 mice were 3 and 26 respectively. (6) The relative power content of each frequency range was: 0-80 Hz: 45. 48± 15. 32% ; 80-200 Hz: 43. 97± 9. 95%;200-300 Hz: 8. 89± 7. 83%; 300-1000 Hz: 1. 66 ± 2. 74%; 80-1000 Hz:54. 52±15. 32%.

关 键 词：心电图 高频心电图 时域值 功率谱 

分 类 号：R540.41[医药卫生—心血管疾病]