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阻塞性睡眠呼吸暂停低通气综合征（OSAHS）由于睡眠时气道塌陷而引起反复缺氧、白天嗜睡等症状，且与高血压、心律失常、冠心病和心力衰竭等心血管疾病关系密切。由于二者之间存在较多共同危险因素，OSAHS在促进心血管疾病发生、发展过程中的病理生理机制还有待深入研究。目前，OSAHS与心血管疾病的病理生理联系和治疗后对心血管疾病的改善作用，使得两者之间的相关性成为研究热点。“,”Obstructive sleep apnea hypopnea syndrome (OSAHS)is a common condition caused by intermittent airway collapse during sleep resulting in repetitive hypoxia and excessive daytime sleepiness.The epidemiologic evidence has confirmed that OSAHS can drastically promote the risks of cardiovascular diseases,including hypertension,cardiac ar-rhythmias,coronary arterial disease,and congestive heart failure.However,the mechanisms behind the increased cardio-vascular diseases risks in OSAHS remain elusive.The potential pathophysiological interaction of cardiovascular diseases with OSAHS,and improvement of cardiovascular diseases after OSAHS treatment make the studies on the correlation between OSAHS and cardiovascular diseases to be hotspot in recent years.