PARTICIPANTS: 100 patients who underwent resection of esophageal cancer by single-lung ventilation were randomly divided into endobronchial occluder and double lumen-tube groups (n =50).

• 对象： 选择需单肺通气择期行食管癌根治术的患者100例。随机分为封堵器组和双腔支气管组各50例。