王大伯身板硬朗,与慢性病从不沾边。日前,他从椅子上起身时,突然眼前一片漆黑,浑身冷汗,天旋地转,身体不支跌倒在地。虽然片刻后清醒,左小腿还是骨折了。医生诊断,这是由体位性低血压引起的晕厥。王大伯与家人感到疑惑。人人 Wang Dabo body tough, never detached and chronic diseases. Recently, when he got up from his chair, he was suddenly in a dark, sweaty, sprawling body and fell on the ground. Although a moment later awake, left leg or a fracture. The doctor diagnosed this as a syncope caused by orthostatic hypotension. Uncle Wang and his family wondered. Everyone