Spellacy W N, Cruz A C, Buhi W C, Birk S A
Obstet Gynecol. 1977 Jul;50(1):68-70.
Transabdominal amniocenteses were performed on both sacs of 14 sets of twins. In each instance one sac was marked with methylene blue to correctly identify the fluids. The lecithin/sphingomyelin ratio was determined on each fluid, and the correlation coefficient between the two sets of fluids was 0.86. There was no significant difference in the fluids' L/S ratios. The importance of this in terms of understanding the variables affecting fetal lung maturation and in clinically managing twin pregnancies is stressed.
对14对双胞胎的两个羊膜囊都进行了经腹羊膜腔穿刺术。在每例手术中，用亚甲蓝标记一个羊膜囊以正确识别羊水。测定了每一份羊水的卵磷脂/鞘磷脂比值，两组羊水之间的相关系数为0.86。两组羊水的L/S比值无显著差异。强调了这一点在理解影响胎儿肺成熟的变量以及临床处理双胎妊娠方面的重要性。
