Comparison of Heart Rate Variabilities in Dynamic Electrocardiogram between Patients with Hypertension Combined with Coronary Heart Disease and those with Simple Coronary Heart Disease
JIANG Danma, WANG Qingqing
Longhua Street Community Health Service Center, Xuhui District, Shanghai 200232
Abstract：【Objective】To compare the differences of heart rate variabilities (HRV) in dynamic electrocardiography between patients with hypertension complicated with coronary heart disease and those with simple coronary heart disease. 【Methods】 A total of 83 elderly patients with hypertension complicated coronary heart disease admitted to our center from January 2020 to June 2022 were selected as the observation group, and 60 elderly patients with simple coronary heart disease admitted to our hospital during the same period were selected as the control group. Clinical baseline data, blood biochemical indicators [triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), fasting blood glucose (FPG)], and HRV time-domain parameters [standard deviation of all sinus rhythm R-R intervals (SDNN), root mean square difference of adjacent R-R intervals (RMSSD), mean standard deviation of R-R intervals every 5 minutes (SDANN), percentage of adjacent R-R intervals with a difference of more than 50 ms to the total number of R-R intervals (pNN50), mean standard deviation of sinus RR intervals every 5 minutes (SDNN Index)], HRV frequency-domain parameters [low-frequency power (LF), high-frequency power (HF)] and low frequency power/high frequency power (LF/HF) were compared between the two groups.【Results】 There were no statistically significant differences in TC, TG, LDL-C, HDL-C, and FPG between the two groups of patients (P>0.05). The time-domain parameters SDNN, RMSSD, SDANN, pNN50, and SDNN Index of HRV in the observation group were lower than those in the control group, and the difference was statistically significant (P<0.05). The frequency domain parameters LF, HF, and LF/HF of the observation group were lower than those of the control group, and the difference was statistically significant (P<0.05). 【Conclusion】 Compared with patients with simple coronary heart disease, hypertensive patients with coronary heart disease have significantly reduced HRV time-domain and frequency-domain parameters, and their autonomic nervous system dysfunction is more severe.
蒋丹玛, 王青青. 高血压合并冠心病与单纯冠心病患者动态心电图心率变异性比较[J]. 医学临床研究, 2024, 41(10): 1530-1532.
JIANG Danma, WANG Qingqing. Comparison of Heart Rate Variabilities in Dynamic Electrocardiogram between Patients with Hypertension Combined with Coronary Heart Disease and those with Simple Coronary Heart Disease. JOURNAL OF CLINICAL RESEARCH, 2024, 41(10): 1530-1532.
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2024, Vol. 41 
