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。
Anger can strangle blood flow in the heart and lead to abnormal heart rhythms, and has been linked to an increased risk of heart disease.
愤怒可以阻滞心脏的血流导致心律不齐并与心脏病危险加剧相关。
Study has shown that blood flow parameters of most people displays abnormal performance under the condition of exercise load although they are normal at rest.
研究表明，多数人在静息状态下的血流参数虽属正常，但在运动负荷下却表现出明显的异常变化和差别。
Spot blood flow signals were present on the surface of the lesion. There was no abnormal blood flow signal in the mass.
病变的基底部可探及较丰富的血流信号，表面可探及点状、带状血流信号，病变内部无异常血流信号。
Abnormal blood flow of middle cerebral artery occurred in 100% of the observation group.
观察组的大脑中动脉血流速值异常率为100%。
Abnormal blood vessels can also along the edge of pupil growth (in the iris organization), impeding the water flow caused by glaucoma row (known as neovascular glaucoma).
不正常的血管也可以沿著瞳孔的边缘生长(在虹膜组织上)，阻碍房水的排流而引起青光眼(称为新生血管性青光眼)。
Postdromal symptoms have been shown to be accompanied and possibly caused by abnormal cerebral blood flow for up to 24 hours after the end of the headache stage.
头痛后期症状被认为是伴随症状，可能由头痛期后24小时异常脑血流引起。
Postdromal symptoms have been shown to be accompanied and possibly caused by abnormal cerebral blood flow for up to 24 hours after the end of the headache stage.
头痛后期症状被认为是伴随症状，可能由头痛期后24小时异常脑血流引起。
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