Evidence map›Paper›PMID 19399290›Full record

ArticleReviews in obstetrics & gynecology2009

Vacuum-assisted vaginal delivery.

Unzila A Ali, Errol R Norwitz

Abstract read
In one paragraph

Article in Reviews in obstetrics & gynecology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Efficacy of obstetrics forceps and vacuum extractor to assist during vaginal delivery: systematic review and meta-analysis.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2025
    Pooled it
  2. Pooled it
  3. Subdural haematoma in neonates following forceps-assisted delivery: case series and review of the literature.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2019
    Pooled it
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  6. Maternal morbidity following a trial of labor after cesarean birth: A scoping review of operative vaginal birth compared with cesarean birth in the second stage of labor.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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  8. What Should Be Discussed When Considering a Vaginal Birth? A Delphi Consensus Study.BJOG : an international journal of obstetrics and gynaecology · 2026
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  14. Intraventricular hemorrhage in term infants: a single institutional experience between 2016 and 2020.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Unzila A AliDepartment of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine New Haven, CT.
Errol R Norwitz

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Approximately 5% (1 in 20) of all deliveries in the United States are operative vaginal deliveries. The past 20 years have seen a progressive shift away from the use of forceps in favor of the vacuum extractor as the instrument of choice. This article reviews in detail the indications, contraindications, patient selection criteria, choice of instrument, and technique for vacuum-assisted vaginal delivery. The use of vacuum extraction at the time of cesarean delivery will also be discussed. With vacuum extraction becoming increasingly popular, it is important that obstetric care providers are aware of the maternal and neonatal risks associated with such deliveries and of the options available to effect a safe and expedient delivery.

Indexed as

Operative vaginal deliveryVacuumVacuum-assisted vaginal delivery

Identifiers

PMID19399290
PMCPMC2672989

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.