The cause of reflex syncope?

summary

Reflex syncope is caused by blood pressure regulation, heart rate reflex arc dysfunction and autonomic nervous insufficiency, which leads to sudden decrease of blood pressure and cardiac output, resulting in transient cerebral insufficiency and transient loss of consciousness. The cause of reflex syncope? Let's talk about it

The cause of reflex syncope?

Vasovagal syncope is the most common type of syncope, accounting for about 50% of syncope. It is often caused by pain, trauma, sudden emotional impact, etc. it is easy to occur in high temperature, fatigue, hunger, pregnancy and various chronic diseases.

Carotid sinus syncope is often induced by sudden head turning, tight collar and stiff neck. Carotid sinus compression test is helpful for diagnosis. Cardiac inhibitory type, syncope with reflex bradycardia, can be antagonized by atropine;

Micturition syncope: more common in middle-aged men, occasionally in the elderly. More in the night to get up to urinate or just after urination suddenly occurred, most without aura. During the attack, the patient suddenly lost consciousness and fainted, which lasted for 1-2 minutes and then recovered. After the attack, there may be bradycardia or arrhythmia, and there is no obvious change in blood pressure.

matters needing attention

Sitting down and burying your head between your legs will make you feel better. Sitting down can avoid syncope. Burying your head between your legs can make your brain get more blood. If syncope has occurred, it is better to let the patient lie flat on the ground, so that the cardiovascular system does not have to fight against gravity. At the same time, turn the patient's body to one side to avoid aspiration. It is wrong to let people sit after syncope, because then the blood has to flow upward to the brain.