What's the reason for fainting

summary

In daily life, fainting is very common, people feel very afraid, suddenly fainted, also unconscious feeling, then, what is the reason for fainting, let's introduce it.

What's the reason for fainting

Vasovagal fainting. This is the most common, often occurs in young people, often when the attack has fixed incentives, such as urination, cough, pain, emotional tension, fear, hot weather, strenuous exercise, fasting and so on. Fainting sometimes does not have any symptoms before attack, it will recover quickly without sequelae, sometimes blood pressure and / or heart rate will slow down, this kind of fainting is usually under the guidance of doctors, most people can be cured through special exercise, and a few need to be treated with drugs or pacemakers.

Cardiogenic fainting. It refers to the fainting caused by sudden decrease or pause of cardiac output caused by heart disease, mostly caused by arrhythmia and organic heart disease. The common arrhythmias are sick sinus syndrome, atrioventricular block and other bradycardia or cardiac arrest. Tachycardia arrhythmias, such as ventricular fibrillation and ventricular tachycardia, lead to decreased cardiac output and fainting. Organic heart disease, such as acute myocardial infarction, cardiac myxoma, hypertrophic obstructive cardiomyopathy, congenital cyanotic heart disease can cause fainting. Cardiogenic fainting is common in the elderly, with long duration and dangerous condition. The elderly with heart disease should communicate with cardiovascular specialists for treatment, and use pacemaker and implantable cardioverter defibrillator when necessary.

Cerebral fainting. It is caused by the circulation disorder of the blood vessels in the brain or the blood vessels that mainly supply the blood to the brain, leading to the temporary generalized cerebral insufficiency. The common causes are transient cerebral ischemia, brain stem fainting and Takayasu arteritis. The preventive measures are to prevent cerebral arteriosclerosis, reduce cerebral vasospasm, regular medication and regular review.

matters needing attention

There are many reasons for fainting, usually pay more attention to avoid standing for a long time, pay attention to ventilation when taking a bath, and install ventilation fans in the bathroom to avoid taking a long bath.