目的探讨重型颅脑外伤行气管切开后院内获得性肺炎的相关因素.方法采用回顾性方法对49例重型颅脑外伤行气管切开术并发院内获得性......

Preoperative tracheobronchoscopy(TBS) in the diag-nostic assessment of newborns affected by esophageal atresia(EA) was d......