Rouse D J, Skopec G S, Zlatnik F J
Department of Obstetrics and Gynecology, University of Iowa Hospitals and Clinics, Iowa City.
Obstet Gynecol. 1993 Feb;81(2):211-4.
To determine whether fundal height might predict early delivery in twin pregnancies; that is, whether larger fundal heights predispose to earlier delivery.
From the charts of 336 well-dated twin pregnancies, we generated a series of fundal height curves.
Within our population of twin pregnancies, the mean fundal height at any given gestational age did not differ between pregnancies delivered before 34 weeks and those delivered at or after 34 weeks. A single fundal height measurement above the 90th percentile before 34 weeks yielded a sensitivity of 23% and a specificity of 79% for delivery before 34 weeks, with a positive predictive value of 38% and a negative predictive value of 64%.
Factors other than uterine overdistention (as measured by fundal height) must be implicated in preterm twin delivery.
确定宫高是否可预测双胎妊娠的早产情况；即，宫高较大是否易导致早产。
从336例孕周明确的双胎妊娠病历中，我们绘制了一系列宫高曲线。
在我们的双胎妊娠人群中，34周前分娩的妊娠与34周及以后分娩的妊娠在任何给定孕周时的平均宫高并无差异。在34周前单次宫高测量高于第90百分位数时，对于34周前分娩的敏感性为23%，特异性为79%，阳性预测值为38%，阴性预测值为64%。
除子宫过度扩张（以宫高衡量）外的其他因素必定与双胎早产有关。
