Newman R B, Gill P J, Campion S, Katz M
Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston.
Obstet Gynecol. 1989 May;73(5 Pt 1):695-9.
Home uterine activity monitoring was performed by 54 women with singleton, 30 with twin, and 34 with triplet gestations. Data were analyzed to determine the relationship between antepartum uterine activity, preterm labor, and fetal number. Preterm labor in singleton and twin gestations was preceded by significant increases in pre-labor contraction frequency (P less than .01). However, in triplets, preterm labor was not preceded by increased pre-labor contractions. Triplet and twin gestations with term labor were associated with higher baseline contraction frequencies than were high-risk singleton gestations with term labor (P less than .05). Fetal number had no impact on pre-labor contraction intensity, although triplet gestations had a significantly greater proportion of uterine activity occupied by low-amplitude, high-frequency contractility.
54名单胎妊娠、30名双胎妊娠和34名三胎妊娠的女性进行了家庭子宫活动监测。对数据进行分析，以确定产前子宫活动、早产和胎儿数量之间的关系。单胎和双胎妊娠早产前的临产前宫缩频率显著增加（P<0.01）。然而，三胎妊娠早产前临产前宫缩并未增加。足月分娩的三胎和双胎妊娠与足月分娩的高危单胎妊娠相比，基线宫缩频率更高（P<0.05）。胎儿数量对临产前宫缩强度没有影响，尽管三胎妊娠中低振幅、高频收缩性占据的子宫活动比例显著更大。
