What is the incidence rate of prolonged pregnancy in women with accurate dating using menstrual dates?

10.7%

Which of the following risks is associated with prolonged pregnancy? A) Decreased perinatal mortality B) Increased neonatal seizures C) Lower rates of obstetric trauma D) Less likelihood of congenital malformations

B) Increased neonatal seizures

What maternal condition is associated with a higher risk of prolonged pregnancy, indicated by an odds ratio of 1.4?

BMI > 30

Which fetal characteristic might have a higher risk of prolonged pregnancy?

Male fetuses

The risk of perinatal mortality increases continuously with gestational age starting from which week?

37 weeks

What is the relative risk of a second post-term pregnancy after one prior post-term pregnancy?

2.2

In which demographic group is the incidence of prolonged pregnancy notably higher?

Nulliparae

Which method of dating pregnancy showed a reduction in prolonged pregnancy incidence to 3.9%?

Ultrasound dating with biparietal diameter measurement at 17 weeks

What is the odds ratio for neonatal seizures linked to delivery at or beyond 41 weeks?

2.7

What is the association between prolonged pregnancy and the risk of cerebral palsy?

Higher risk of neonatal encephalopathy leading to cerebral palsy in deliveries ≥ 42 weeks.

Which of the following is a recommended frequency for checks in women refusing induction after 42 weeks? A) Weekly B) Bi-weekly C) Daily D) Monthly

B) Bi-weekly

What is the effect of routine second trimester ultrasound on prolonged pregnancy classification?

It reduces the number of pregnancies classified as prolonged.

What factor is suggested to influence the initiation of labor in prolonged pregnancies due to cervical length measurements?

Transvaginal cervical length at 37 weeks

What is the maximum vertical pool depth in amniotic fluid that best predicts abnormal perinatal outcomes?

< 2.7="">

What is the outcome of randomized trials comparing routine induction at 41 weeks versus selective induction?

Induction reduces perinatal mortality in normally formed babies.

Which of the following outcomes is increased with induction of labor after 41 weeks? A) Neonatal jaundice B) Apgar scores C) Maternal satisfaction D) Risk of congenital anomalies

A) Neonatal jaundice

What is the primary reason for the increased risk of cesarean sections in post-term pregnancies?

Defective labor physiology or management bias due to known post-term status.

Which organization suggests that women with post-term pregnancies should have the option of elective delivery after 41 weeks?

Society of Obstetricians and Gynaecologists of Canada (SOGC)

What does the absence of neonatal encephalopathy in a child suggest regarding the timing of the insult?

An earlier insult rather than one occurring during prolonged pregnancy.

Which screening method has not demonstrated strong evidence of effectiveness for monitoring prolonged pregnancies?

Current antenatal tests

What is the main risk of prolonged pregnancy linked to the incidence of meconium aspiration?

Increased risk with advancing gestation from 40 weeks to 42 weeks.

What is the recommended action if a cervix is not favorable in a post-term pregnancy?

Cervical ripening should be performed.

In the context of prolonged pregnancy, what is the significance of low fetal fibronectin levels at 39 weeks?

It predicts an increased likelihood of post-term pregnancy.

Which trial demonstrated that first trimester crown-rump length dating significantly reduces prolonged pregnancy rates?

FASTER Trial

What is the odds ratio for perinatal death in pregnancies with a birthweight <10th centile="" at="" ≥42="">

5.68

How does maternal age relate to the incidence of prolonged pregnancy?

There is no relation to maternal age.

What is the primary predictor of poor neonatal outcomes in prolonged pregnancies as identified by biophysical profiles?

Abnormal BPS scores

What effect does induction of labor have on the cesarean rate according to the Sanchez-Ramos review?

Induction reduces the cesarean rate.

What is the relationship between parity and risks of adverse outcomes in prolonged pregnancies?

Risks are higher in nulliparae compared to multiparae.

What is the purpose of using computerized CTG in post-term pregnancies?

To reduce errors in fetal heart rate interpretation.