1病例报告患者男,61岁。因突发心悸4h就诊。无头痛、头晕、发热、腹泻等;否认既往心律失常、冠心病、心肌病、肺心病等病史。查体:一般情况好,血压130/80mmHg,两肺未闻及干湿性啰音,心率116/min,律不齐。心电图检查示:窦性心律不齐,频发室性期前收缩,P-R间期0.16s,Q-T间期0.48s,S-T段延长, 1 case report Patient male, 61 years old. Due to sudden palpitations 4h treatment. No headache, dizziness, fever, diarrhea, etc .; denied previous arrhythmia, coronary heart disease, cardiomyopathy, pulmonary heart disease and other medical history. Physical examination: the general situation is good, blood pressure 130 / 80mmHg, both lungs did not smell and wet and dry rales, heart rate 116 / min, irregularities. ECG examination showed: sinus arrhythmia, frequent ventricular contraction, P-R interval 0.16s, Q-T interval 0.48s, S-T extended,