Watson William J, Welter Suzanne, Day Diana
Department of Obstetrics and Gynecology, University of South Dakota School of Medicine, Sioux Falls 57105, USA.
J Reprod Med. 2004 Apr;49(4):294-6.
To determine the accuracy of clinical identification of breech presentation during third-trimester prenatal care and to evaluate factors associated with the accuracy of this determination.
Three hundred eleven patients in the third trimester were prospectively studied. Clinical determination of fetal presentation was made, after which ultrasound was used to determine the true presentation. Amniotic fluid volume, maternal abdominal wall thickness and body mass index were determined for each patient.
Among the 311 patients, there were 49 with breech presentation. Twenty-eight of 49 were identified correctly (57.1%). Multiple regression analysis indicated that gestational age, body mass index and maternal abdominal skin thickness did not influence the incidence of correct assessments. There was a significant difference between examiners in the accuracy of clinical assessment of fetal presentation.
The accuracy of assessment of breech presentation does not appear to depend on gestational age or maternal body mass index but depends more on the individual obstetric care provider.
确定孕晚期产前检查中臀位临床识别的准确性，并评估与该判定准确性相关的因素。
对311例孕晚期患者进行前瞻性研究。先进行胎儿胎位的临床判定，之后采用超声检查确定真实胎位。测定每位患者的羊水量、孕妇腹壁厚度和体重指数。
在311例患者中，有49例为臀位。49例中有28例被正确识别（57.1%）。多元回归分析表明，孕周、体重指数和孕妇腹部皮肤厚度不影响正确评估的发生率。检查者在胎儿胎位临床评估的准确性方面存在显著差异。
臀位评估的准确性似乎不取决于孕周或孕妇体重指数，而更多地取决于个体产科护理人员。
