一种改良经皮气管扩张器的动物实验研究

Animal study of improved percutaneous airway dilator

目的 论证新型经皮气管扩张器的可行性及安全性.方法 使用传统和新型经皮气管扩张器对35例杂交犬在纤支镜监视下行经皮气管扩张造口（传统扩张器10例,新型扩张器25例）,置入一次性气管套管,观察扩张、造口、置管等全过程.结果 25例新型经皮气管扩张器均成功置入一次性气管套管,手术时间（3.0±0.7）min[传统（3.7±0.8） min,P＜0.05],出血（2.0±0.6）ml[传统（3.2±0.5）ml,P＜0.05],未出现气胸、大出血等严重并发症.结论 新型经皮扩张器能顺利实施经皮气管切开,手术快速安全.

Objective To demonstrate the feasibility and safety of the new percutaneous tracheal dilator for percutaneous dilatational tracheostomy （PDT）.Methods PDT was performed by using new and old percutaneous tracheal dilator in 35 mongrel dogs under monitoring by fiberoptic bronchoscope （10 old,25 new）.Disposable tracheal tube was intubated and the whole procession of expansion,ostomy and catheter were observed.Results Disposable tracheal tubes were successfully intubated in all the 25 dogs.The average operation time was （3.0±0.7） min [old （3.7±0.8） min,P＜0.05].The blood loss volume was （2.0±0.6） ml [old （3.2±0.5）ml,P＜0.05].No severe complications such as pneumothorax,high blood occurred after operation.Conclusions The new percutaneous tracheal dilator can be used in PDT,and the operation is safe and peomormed quickly.