关于食管的描述正确的是() ["食管是管径上下均匀一致的肌性管道","食管的两端经常处于开放状态","食管可分为颈部,胸部和腹部三部分","食管的腹部最长","食管由平滑肌组成"]
慢性肺心病肺心功能代偿期不具有的体征是() ["肺动脉瓣区第二心音亢进","肺气肿征","颈静脉充盈","剑突下心脏收缩期搏动","右心室奔马律"]
慢性肺心病急性加重期关键性的治疗是正确应用() ["利尿剂","平喘药物","祛痰剂","呼吸中枢兴奋剂","抗生素"]
显性肺动脉高压的诊断标准是() ["运动后肺动脉平均压≥1.96kPa(20cmH2O)","静息时肺动脉平均压≥1.96kPa(20cmH2O)","静息时肺动脉平均压≥2.7kPa(20mmHg)","运动后肺动脉平均压≥4.0kPa(30mmHg)","运动后肺动脉平均压≥2.7kPa(20mmHg)"]
女,71岁,上腹部无规律性隐痛2个月,1小时前呕咖啡样物150ml,柏油便300ml来诊,无肝病史。查体:血压90/60mmHg,脉搏110次/分,血红蛋白90g/L,上腹部轻度压痛,肝脾肋下未触及,其止血措施最好选择() ["维生素K.静滴","奥美拉唑静注","6-氨基己酸静滴","三腔双囊管压迫","垂体后叶素静滴"]
男性,36岁。拟行麦氏点切口治疗,现已完成术前准备,平卧于手术台上。要求:请用碘伏给患者手术野做皮肤消毒,并铺手术巾、手术单。