Valsalva手法可增高曲张静脉内压力,而咳嗽也可产生这一现象。为确定咳嗽是否可促发急性曲张静脉出血,作者比较因食管曲张静脉出血与呼吸道感染而急诊入院的季节性变化。利物浦皇家医院收集了本院1982年至1991年因急性曲张静脉出血、所有其他急性胃肠道出血、呼吸道 Valsalva approach can increase varicose vein pressure, and cough can also produce this phenomenon. To determine if cough can trigger acute variceal bleeding, the authors compared the seasonal changes in emergency admission due to esophageal variceal bleeding and respiratory infections. Liverpool Royal Hospital collected from 1982 to 1991 in our hospital due to acute variceal bleeding, all other acute gastrointestinal bleeding, respiratory