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%.
出处
《生理学报》
CAS
CSCD
北大核心
1996年第5期512-516,共5页
Acta Physiologica Sinica
基金
山东省科委资助