昏厥也称晕厥,俗称昏倒。昏厥是一过性脑缺血、缺氧引起的短时间意识丧失现象。引起昏厥的原因很多,过度紧张、恐惧而昏倒最多见,为血管抑制性昏厥,又称反射性昏厥或功能性昏厥。体位性昏厥、排尿性昏厥也属此类。其他尚有心源性、脑源性、失血性、药物过敏性昏厥等。昏厥的临床表现为突然头昏、眼花、心慌、恶心、面色苍白、全身无力,随之意识丧失,昏倒在地。急救方法:发生昏厥,不要惊慌,应先让病人躺 Syncope also known as syncope, commonly known as collapsed. Syncope is a transient cerebral ischemia, hypoxia caused by the phenomenon of short-term loss of consciousness. Cause syncope for many reasons, excessive tension, fear and fainting the most common for vascular suppression of syncope, also known as reflex or functional fainting. Postural fainting, micturition fainting also belong to this category. There are other cardiac, brain-derived, hemorrhagic, drug-induced syncope and so on. The clinical manifestations of fainting sudden dizziness, vertigo, palpitation, nausea, pale, general weakness, followed by loss of consciousness, collapsed to the ground. First aid method: fainting occurs, do not panic, let the patient lie down