The study showed that he had obstructive sleep apnea (OSA), a disorder in which breathing stops repeatedly in sleep for 10 seconds or longer, lowering oxygen supply to the brain.

研究表明他患有阻塞性睡眠呼吸暂停综合症，一种人在睡眠中反复地停止呼吸长达10秒或更长时间的症状，降低脑部的氧气供给量。

youdao

People with trouble sleeping can use this app to record their blood-oxygen level during the night — data that can help a doctor diagnose whether they have sleep apnea.

有睡眠障碍的人可在晚间使用该应用记录他们的血氧饱和度——该数据可帮助医生诊断他们是否患有睡眠呼吸暂停症。

youdao

Sleep apnea is caused by the abnormal narrowing or blockage of the airways that allow air to flow into the lungs, which causes sudden drops in oxygen in the blood.

睡眠呼吸暂停因空气流往肺部的通道——气道——的不正常紧缩或堵塞引发，这会导致血液中的氧气含量骤然下降。

youdao

Dr. Somers and other researchers think sleep apnea may affect some forms of heart disease because of the drop in oxygen that occurs during sleep apnea.

CNN: Sleep apnea: Can it cause heart disease?

By studying the climbers, six of whom reached the summit, the researchers hope to gain insight into heart failure, lung disease and sleep apnea all conditions related to a low-oxygen, or hypoxic, state.

WSJ: Mayo Clinic Researchers on Everest Study High Altitude's Effects on the Body

"The AAP recognizes that monitors may be helpful to allow rapid recognition of apnea, airway obstruction, respiratory failure, interruption of supplemental oxygen supply, or failure of mechanical respiratory support, " the group states.

ENGADGET: Researchers use wireless network to monitor breathing, could save lives