背景：阻塞性睡眠呼吸暂停症有较高的发病率，它得主要特征是急性的夜间血流动力学改变和神经激素分泌异常，而这些都可能增加心肌梗塞患者在夜间的发病率。

Background: Obstructive sleep apnea has a high prevalence and is characterized by acute nocturnal hemodynamic and neurohormonal abnormalities that may increase the risk of mi during the night.

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目的探讨阻塞性睡眠呼吸暂停（OSA）患者不同水平上气道径与颌面解剖结构异常之间的关系。

Objective To investigate the contributions of craniofacial defects to the upper airway narrowing in different levels in patients with obstructive sleep apnea(OSA).

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目的探讨呼吸调节异常是否是引起阻塞性睡眠呼吸暂停低通气综合征(OSAHS)家族聚集性的原因。

Objective to investigate the genetic abnormality of ventilatory control may play a role in the familial aggregation of obstructive sleep apnea-hypopnea syndrome (OSAHS).

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