病例1:女性,18岁,因“恶心3d,呕吐伴头昏、乏力7h”于2009年7月28日09:30时入住我院内二科。患者入院前3d不明原因感恶心,余无不适,在当地治疗效果不佳,具体诊治情况不详。入院当天02:00时不明原因出现呕吐10多次,每次量不等,无咖啡渣样物,非喷射状,在门诊期间解小便1次约200ml Case 1: Female, 18 years old, due to “nausea 3d, vomiting with dizziness, fatigue 7h” at 09:30 on July 28, 2009 admitted to our hospital two subjects. 3 days before admission, patients with unexplained a sense of nausea, I have no discomfort, poor local treatment, the specific diagnosis and treatment is unknown. At 02:00 on the day of admission vomiting unexplained vomiting more than 10 times, each amount ranging from no sample of coffee grounds, non-jet-like, during the clinic to relieve urination about 200ml