患者男性,65岁。因频繁心悸、黑矇、晕厥伴抽搐4小时急诊入院。既往有慢性支气管炎、肺气肿、肺心病。入院前因受凉感冒咳嗽咳痰。无冠心病、耳聋史。体检:BP12/10kPa。平卧位,唇甲轻度发绀。双肺底闻及细湿罗音,以左侧为重。心界不大,心率84次/分,心律不齐。剑突下闻及收缩期2/Ⅵ级柔和吹风样杂音。双下肢不肿。急诊心电图:A图中频发室早呈二联律,R为舒张晚期室性早搏,偶联间期为560ms,落在第二个窦性P波之后的P-R段上,而该P波实为一心动周期的u波重合,使原已增大的u波更为显著,此在C图中可明显看出P与u+p之差别,同时可见 Male patient, 65 years old. Due to frequent palpitations, dark, fainting with convulsions 4 hours emergency admission. Past chronic bronchitis, emphysema, pulmonary heart disease. Cold cough and expectoration due to cold before admission. No coronary heart disease, history of deafness. Physical examination: BP12 / 10kPa. Supine position, lips slightly cyanotic cyanosis. Blow at the end of the smell and fine wet rales to the left as the most important. Heart is not big, heart rate 84 beats / min, arrhythmia. Xiphoid smell and systolic 2 / Ⅵ soft blowing like murmur. Double lower extremity is not swollen. Emergency electrocardiogram: Figure A frequent occurrence of dual frequency premature ventricular contractions, R is premature ventricular contraction premature contraction, the coupling interval of 560ms, fell on the second sinus P wave after the PR segment, and the P waves U-wave for a cardiac cycle coincidence, so that the original u-wave has been more significant, which can be clearly seen in Figure C P and u + p of the difference, at the same time can be seen