Ramin S M, Little B B, Gilstrap L C
Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas.
Obstet Gynecol. 1993 Feb;81(2):307-11.
To determine whether opinions and practice patterns have markedly changed over the past decade and whether clinicians are cognizant of the new ACOG definitions for forceps deliveries.
Two hundred ninety-five United States and Canadian residency programs were surveyed via a questionnaire; 203 (69%) responded. Statistical analysis was performed using the chi 2 test, Yates correction factor, and the extended Mantel-Haenszel test.
All but two program directors (99%) were familiar with the new definitions, which were being used by 162 (80%) of the programs. All institutions used outlet and low forceps, although 14% no longer performed midforceps deliveries. Attending faculty were the primary instructors in 67% of United States and 100% of Canadian programs. Simpson forceps were the most commonly used for outlet (46%) and low (43%) forceps deliveries. Kielland (27%) and Simpson (24%) instruments were most commonly used for midforceps deliveries.
Although the rate of midforceps use decreased, operative vaginal delivery was still commonly taught in residency programs in North America in 1990.
确定在过去十年中观点和实践模式是否发生了显著变化，以及临床医生是否知晓美国妇产科医师学会（ACOG）关于产钳助产的新定义。
通过问卷调查对295个美国和加拿大的住院医师培训项目进行了调查；203个项目（69%）做出了回应。使用卡方检验、耶茨校正因子和扩展的曼特尔 - 亨塞尔检验进行统计分析。
除两名项目主任外（99%），所有项目主任都熟悉新定义，其中162个项目（80%）正在使用这些定义。所有机构都使用出口产钳和低位产钳，尽管14%的机构不再进行中位产钳助产。在美国67%的项目和加拿大100%的项目中，主治教员是主要授课教师。辛普森产钳是出口产钳助产（46%）和低位产钳助产（43%）中最常用的。基兰德产钳（27%）和辛普森产钳（24%）是中位产钳助产中最常用的器械。
尽管中位产钳的使用比例有所下降，但1990年北美住院医师培训项目中仍普遍教授手术阴道分娩。
