The Association Between Sleep Breathing Impairment Index and Cardiovascular Risk in Male Patients with Obstructive Sleep Apnea

医学 阻塞性睡眠呼吸暂停 内科学 多导睡眠图 弗雷明翰风险评分 四分位数 心脏病学 睡眠呼吸暂停 呼吸暂停-低通气指数 混淆 冲程(发动机) 睡眠研究 疾病 呼吸暂停 置信区间 机械工程 工程类
作者
Wenhao Cao,Jinmei Luo,Rong Huang,Yi Xiao
出处
期刊:Nature and Science of Sleep [Dove Medical Press]
卷期号:Volume 14: 53-60 被引量:14
标识
DOI:10.2147/nss.s343661
摘要

Obstructive sleep apnea (OSA) is related to multiple complications including insulin resistance (IR), endothelial dysfunction, and increased risk of cardiovascular disease (CVD). The apnea-hypopnea index (AHI) was widely used to measure OSA severity but poorly correlated with complications above. This study aimed to evaluate whether a new metric, the sleep breathing impairment index (SBII), was associated with cardiovascular risk in patients with OSA.This study enrolled 140 consecutive male OSA patients without overt atherosclerotic CVD events, including coronary heart disease, stroke, peripheral vascular disease, or heart failure. Data on baseline medical history, anthropometric and polysomnographic parameters, fasting biochemical measurements and endothelial function tests, and common questionnaires were collected. The SBII was calculated by the product of the duration of each obstructive event and the associated desaturation area. The primary outcome was the moderate-to-high Framingham 10-year CVD risk.The median age of enrolled patients was 40 (35-48) years. Eighty subjects had a moderate-to-high Framingham CVD risk. Patients with SBII in the third and fourth quartile had an increased proportion of moderate-to-high Framingham CVD risk with an adjusted OR 6.28 (95% CI 1.10-36.04) and 11.78 (95% CI 1.25-111.38). Significant association was not demonstrated in AHI and the Framingham CVD risk.Higher SBII was associated with an increased 10-year CVD risk after adjusting for multiple potential confounding factors. Additional valuable information derived from polysomnography besides AHI deserves to be paid more attention.
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