患者,男,24岁。突起头晕、头痛、面色苍白伴呕吐、大汗淋漓1h于1998年4月13日急诊入院。体检:血压75/60mmHg(1mmHg=0.133kPa),烦躁,四肢皮肤湿冷,末梢轻度紫绀,心界不大,心率120次/min,律不齐,期前收缩6次/min,双肺底无湿性口罗音。急查心电图为窦性心动过速,频发室性期前收缩; Patient, male, 24 years old. Prodromal dizziness, headache, pale accompanied by vomiting, and sweating 1h were admitted to the hospital on April 13, 1998. Physical examination: blood pressure 75/60mmHg (1mmHg=0.133kPa), irritability, clammy skin, extremities mild cyanosis, small heart border, heart rate 120 beats/min, irregular, pre-systolic 6 times/min, double lung bottom No wet rales. Urgent electrocardiogram for sinus tachycardia, frequent ventricular premature contraction;