On September 16, Xiao Xu was working at the construction site when he fell from a height of 5 meters, causing abrasions on his face, fractures on his left leg and lacerations on his right leg. Xiao Xu is 22 years old, followed his brother from Linyi to Qingdao to work, in the construction site is not a novice, about the usual physical fitness, lying in the hospital bed Xiao Xu stressed: “very good! The small illnesses of colds and fevers are rare!” ”That day, he was outside with a ruler to measure things, about four or five meters high. Measure something must have to squat to do, this work is often done on construction sites, who would not expect to have an accident. But after a while, he just stood up and fell straight down from above.” Xiao Xu’s brother said. Fortunately not very high, fell down where there are no other facilities, Xiaoxu sent to the hospital after examination found that their own body bruises more, the most serious left leg a little fracture hit a cast, the other places are normal. In the hospital for a few days, September 19, the day his brother came to him to do the discharge, back home to slowly raise. However, people including Xiao Xu is confused, usually the body is good how to appear this symptom? Xiao Xu’s attending physician, 401 Hospital Orthopedic Department, Dr. Yin Hailei, introduced: “His situation at the time should be postural hypotension caused by a sudden drop in blood pressure when standing up leads to cardiac and cerebral ischemia, dizziness, black eyes and other symptoms.” ”Postural hypotension also has to be prevented, do not look at the symptoms are light, not timely treatment can also cause big trouble.” Yin Hailei introduced, especially at the time of the change of season, the public must be careful to prevent this symptom, more exercise, meat and vegetables with a healthy diet, regular work and rest eat more fruits and vegetables, sweating after the activity when more water, can reduce or prevent postural hypotension. In addition, this situation will appear more in the elderly, so in the autumn and winter season once such symptoms, the elderly can immediately sit down or lie down on the ground, head down, untie the collar, rest for a while and then get up.