Diane J. Obstet Gynecol Sep. Prolonged pregnancy delivery at or beyond 41 weeks is associated with maternal and neonatal morbidity, but the underlying causes of this condition are unclear. To determine whether cervical length is associated with pregnancy duration, researchers at one institution conducted a retrospective cohort study involving nulliparous women with singleton pregnancies. Participants were stratified into quartiles based on second-trimester cervical length as determined with transvaginal ultrasound median length by quartile, 3.
In all, women Incidence of prolonged pregnancy was Out of 15 patients with cervical length less than 3cm, 14 Conclusion: Cervical length of less than 3cm measured between weeks of gestation is associated with preterm births and favours vaginal birth whereas, cervical length of more than 4cm is associated with postdated pregnancy and increased incidence of cesarean section. Preterm birth is a common obstetric problem accounting for Cesarean section C.
S rate was Preterm birth remains a major cause of neonatal morbidity and mortality due to complications like necrotizing enter colitis, intraventricular hemorrhage, respiratory distress syndrome and neurological deficit 1. There are various methods to predict preterm labor like 1 cervical length 2 fetal fibronectin 3 cortisol level 4 placental hormone level and 5 non invasive electromyography 2 - 6.
Post dated pregnancy has its own complications like fetal macrosomia, oligohydramnios, increased risk of meconium stained liquor and operative intervention 1. Predictive measures of postdated pregnancy include cervical length measurement by ultrasonography and measurement of fetal fibronectin, cytokine and nitric oxide concentration in cervicovaginal secretions 7.
Some studies have shown that cervical length assessed by transvaginal ultrasonography could predict the possibility of prolonged pregnancy in nulliparous women 7 , 8. It has also been noted that there is an association between cervical length during mid pregnancy and cesarean section due to non progress of labor at term.
Even though cervical length is considered as predictor of timing and mode of delivery, it is not used as a screening tool in low risk asymptomatic population. The aim of this study is to predict the timing and mode of delivery using mid-pregnancy ultrasonographic measurement of cervical length. The recruitment for the study was done from December to April All primigravidae attending antenatal clinic with singleton pregnancy with no comorbidities at weeks of gestation were included in the study.
The exclusion criteria were fetal abnormalities, associated medical complications like hypertension, diabetes, short stature, elderly primigravidae, teenage pregnancy, early trimester bleeding, conception afterassisted reproductive techniques IUI, IVF and induction of labor before 40 weeks of gestation. Detailed history was obtained from the patients at recruitment and they were excluded as per exclusion criteria.
After obtaining consent, they were subjected to transvaginal ultrasonography between weeks of gestation. Cervical length was measured by one of the two authors. These measured cervical lengths were kept confidential from the obstetrician conducting delivery. Subsequently, those who developed complications like GDM, GHTN, malpresentation or who required induction of labor before 40 weeks for other complications like IUGR, oligohydramnios, decreased fetal movements were excluded from the study.
These patients were given routine antenatal care according to hospital protocol. The outcome of each pregnancy e. S were recorded. These results were correlated with mid-trimester ultrasonographic cervical length measurements. Preterm labor was defined as the onset of labor after 28 weeks and before 37 completed weeks.
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This content does not have an Arabic version. See more conditions. Request Appointment. Healthy Lifestyle Pregnancy week by week. Products and services. Free E-newsletter Subscribe to Housecall Our general interest e-newsletter keeps you up to date on a wide variety of health topics. Sign up now. Think of the cervix as the neck and opening of the balloon. As you fill that balloon up, the neck of the balloon draws up with the pressure of the air behind it, similar to the cervix.
The cervix is simply the bottom opening of the uterus drawing up and opening wider to make room for the baby. A woman is considered to be in the active stage of labor once the cervix dilates to around 5 to 6 cm and contractions begin to get longer, stronger, and closer together.
The active stage of labor is characterized more by the rate of regular cervical dilation per hour. Your doctor will expect to see your cervix opening at a more regular rate during this stage. The active stage of labor can range from a woman dilating anywhere from 0. Mothers who have delivered a baby before tend to move more quickly through labor. Some women will simply progress more quickly than others.
A woman may reach full cervical dilation, but the baby may still need time to move down the birth canal fully to be ready for birth. The second stage ends after the baby is delivered. It can last anywhere from minutes to hours. Women may deliver with only a few hard pushes, or push for an hour or more. Pushing occurs only with contractions, and the mother is encouraged to rest between them.
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