Multiple pregnancies
Obstetrics & Gynaecology · Topic 11
Source: NMC CBME Curriculum 2024 · Volume III · Obstetrics & Gynaecology · Topic 11 · combined PDF page 430
Practice questions
- In a systematic review and meta-analysis of studies from Ethiopia, how did multiple pregnancy relate to preterm birth compared with singleton pregnancy?
- A randomized-trial systematic review evaluates cervical pessary in twin pregnancies with a cervical length below 25 mm. Which conclusion best reflects the pooled findings?
- In the systematic review of pessary use for twin pregnancies with a short cervix, which additional outcome pattern was reported?
- After delivery of the first fetus in a twin pregnancy at very early gestation, a team discusses whether to attempt delayed interval delivery. What potential benefit was supported by the meta-analysis of reported cases?
- In a meta-analysis of delayed interval delivery, what proportion of women with reported data experienced serious maternal morbidity?
- Among survivors in the delayed interval delivery meta-analysis, which comparison of short- and long-term neonatal morbidity was reported?
- Which statement best characterizes the evidence base for delayed interval delivery in the supplied meta-analysis?
- In the delayed interval delivery meta-analysis, which subgroup showed a pooled survival odds ratio of 14.89 for remaining fetus(es) compared with the first-born fetus?
- In the meta-analysis comparing delayed interval delivery outcomes by gestational age at first delivery, which interval had the largest reported odds ratio for survival of the remaining fetus(es) compared with the first-born fetus?
- A meta-analysis compared bipolar umbilical cord coagulation (BCC) with radiofrequency ablation (RFA) for reduction of complicated monochorionic multiple pregnancies. What was the finding for overall survival?
- In the meta-analysis of BCC versus RFA for complicated monochorionic multiple pregnancies, which procedure was associated with a higher reported rate of intrauterine fetal death after reduction?
- Which complication was reported more often after BCC than after RFA in the meta-analysis of complicated monochorionic multiple pregnancies?
- A clinician is comparing BCC and RFA for a complicated monochorionic multiple pregnancy. Which interpretation best reflects the supplied meta-analysis?
- Which physiological feature of multiple pregnancy was identified as a relevant influence on maternal thyroid function?
- According to the systematic review of maternal thyroid function, when were differences between multiple and singleton pregnancies mainly expressed?
- A laboratory applies singleton-pregnancy thyroid reference ranges to a patient with a multiple pregnancy. What concern did the systematic review raise?
- How should the evidence for separate thyroid reference ranges in multiple pregnancy be characterized?
- Which maternal micronutrient deficiencies were identified as possible concerns in multiple pregnancy by a systematic review?
- A patient with a multiple pregnancy asks whether the available evidence proves that supplementation of every micronutrient should differ from singleton pregnancy. Which response best reflects the systematic review?
- Which explanation did the micronutrient systematic review give for why multiple pregnancy may place greater demands on maternal nutrient reserves?
- In a meta-analysis comparing PGT with IVF/ICSI pregnancies, which preterm-birth result was reported specifically for multiple pregnancies?
- In the PGT versus IVF/ICSI meta-analysis, what was the reported direction of the very-low-birth-weight result in singleton pregnancies?
- How did the PGT meta-analysis characterize maternal outcome risks when comparing PGT pregnancies with IVF/ICSI pregnancies?
- The PGT meta-analysis reported some lower preterm-birth risks but cautioned that firm conclusions could not be drawn. Which limitation best explains this caution?
- Compared with naturally conceived multiple pregnancies, IVF/ICSI multiple pregnancies had significantly higher pooled risks for which set of congenital malformation categories in the supplied meta-analysis?
- Which specific malformation category had a pooled relative risk of 1.36 in the comparison of IVF/ICSI with naturally conceived multiple pregnancies?
- Which conclusion is most accurate for the congenital-malformation categories not identified as significantly increased in IVF/ICSI multiple pregnancies?