例1 女,38岁。1年前无诱因出现阵发性头痛,伴头晕、心慌、乏力、纳整,于市内某医院就医,诊断为高血压[血压最高达180／120 mm Hg(1 mm Hg=0．133 kPa)]、冠心病,予硝苯地平缓释片、美托洛尔片、单硝酸异山梨酯片及心血康胶囊等口服治疗,效果不明显。后患者间断求医于本地多家医院,曾查出有严重低血钾(2．05 mmol／L),但未引起接诊医 Example 1 Female, 38 years old. 1 year ago, there was no incentive to have paroxysmal headache, with dizziness, palpitation, fatigue, satisfied, in a city hospital for treatment, diagnosed as high blood pressure [up to 180/120 mm Hg (1 mm Hg = 0.133 kPa )], Coronary heart disease, nifedipine sustained-release tablets, metoprolol tablets, isosorbide mononitrate tablets and Xuezhikang oral treatment, the effect is not obvious. Patients discontinued seeking medical treatment in several local hospitals. Severe hypokalemia (2.05 mmol / L) was detected but no patient was admitted to the clinic