·2,447,543篇论文数据，部分数据来源于NoteExpress
知道的要求，术前检查和维修。
Know the requirements of pre-operation and inspection and maintenance.
目的：探讨慢性化脓性中耳炎术前检查指标和听骨链状态的相关性。
Objective:To discussion the relationship of preoperative findings and ossicular condition in chronic suppurative otitis media.
方法：利用多普勒超声对9例室间隔缺损合并双腔右室患者行术前检查。
Method:Doppler ultrasound was used to detect 9 cases with VSD and DCRV before operation.
应用推荐