Скачать с ютуб 突然晕倒是怎么回事 殷洪山 河北医科大学第三医院 в хорошем качестве

突然晕倒是怎么回事 殷洪山 河北医科大学第三医院

突然晕倒是怎么回事 殷洪山 河北医科大学第三医院 突然晕倒的原因很多，一般晕倒的最根本的机制就是大脑急剧的缺血导致大脑缺氧从而突然晕倒，一个是本身脑源性的，比如说大脑动脉突然的堵塞有可能会晕倒；另外一个就是心源性的也就是说由于心脏跳的过快或者过慢或者停搏，导致心脏排血功能受限大脑供血不足也会引起突然的晕倒；再一个就是一些体位性低血压，老年人他血压调节能力比较弱比如说在他如厕时，尤其是蹲便时他突然的起来容易出现一下突然晕倒，这是他血压调节不好引起来的叫体位性低血压，还有一部分年轻人容易血管迷走性晕厥，这是血管迷走神经调节机制过于亢奋可能造成的一些低血压或者晕倒的状态。 What's the matter with the sudden fainting There are many reasons for the sudden fainting, The most fundamental mechanism of general fainting is that acute cerebral ischemia leads to brain anoxia and sudden fainting, One is of its own brain origin, For example, a sudden blockage of the cerebral artery may cause fainting; The other is cardiogenic, that is, because the heart beats too fast or too slow or stops, Lead to the limitation of cardiac function, cerebral insufficiency of blood supply will also cause sudden fainting; Another is postural hypotension, In the elderly, his blood pressure regulation is weak, for example, when he goes to the toilet, Especially when squatting, he is prone to faint suddenly, It's called postural hypotension because of his poor blood pressure regulation, Some young people are prone to vasovagal syncope, This is the state of hypotension or fainting caused by the hyperactivity of vasovagal regulation mechanism.