Characteristics of sleep-disordered breathing and heart rate variability in patients with positional obstructive sleep apnea syndrome

VernacularTitle:体位性睡眠呼吸暂停综合征患者睡眠呼吸紊乱及心率变异性的特点
Author: Jing FENG ¹ ; Huijuan WU ; Kun CHEN ; Zhongxin ZHAO
Author Information

1. 第二军医大学长征医院神经内科
Keywords: positional obstructive sleep apnea syndrome; heart rate variability; apnea hypopnea index
From: Journal of Clinical Medicine in Practice 2017;21(21):1-5
CountryChina
Language:Chinese
Abstract: Objective To investigate the characteristics of HRV parameters in different posture of patients with positional obstructive sleep apnea syndrome (POSAS) and the relationship between apnea hypopnea index (AHI),minimum oxygen saturation (LSaO2) and HRV parameters.Methods A case-control study was conducted to compare the characteristics of heart rate variability between supine and lateral positions in POSAS patients.Results Compared with lateral position,POSAS group showed higher levels of heart rate variability indexes (P ＜ 0.05).Pearson correlation analysis indicated that AHI was positively correlated with SDNN、SDANN、ULF、LF/HF (P ＜ 0.05 or P ＜ 0.01).Remarkably,the correlation between AHI and LF/HF was excellent (r =0.437,P ＜ 0.01),and negatively correlated with HF(r =-0.306,P ＜ 0.05).Similarly,LSaO2 was negatively correlated with LF/HF.Conclusion The sleep-disordered breathing in supine position of POSAS patients is significantly heavier than that in lateral decubitus position.