患者,女,48岁。因头晕、心悸2d入院。患者入院前2d因过度劳累出现头晕、心悸症状,间断发作,持续数小时,休息后稍缓解,伴间断呕吐,呕吐物为胃内容物,无晕厥、胸痛、呕血、腹泻等症状。在当地医院检查血压低(具体值不详)给予补液对症治疗,病情无好转。患者否认既往有糖尿病、高血 Patient, female, 48 years old. Due to dizziness, palpitations 2d admission. Patients dizziness, palpitation symptoms, intermittent episodes of seizures 2d before admission due to over exertion, sustained a few hours, a slight relief after rest, with intermittent vomiting, vomit for the stomach contents, no syncope, chest pain, vomiting, diarrhea and other symptoms. In the local hospital to check low blood pressure (specific value is unknown) given rehydration symptomatic treatment, the condition did not improve. Patients denied previous diabetes, high blood