Soft versus rigid vacuum extractor cups for assisted vaginal delivery - PubMed (original) (raw)
Review
Soft versus rigid vacuum extractor cups for assisted vaginal delivery
R Johanson et al. Cochrane Database Syst Rev. 2000.
Update in
- WITHDRAWN: Soft versus rigid vacuum extractor cups for assisted vaginal delivery.
Johanson R, Menon V. Johanson R, et al. Cochrane Database Syst Rev. 2010 Nov 10;2010(11):CD000446. doi: 10.1002/14651858.CD000446.pub2. Cochrane Database Syst Rev. 2010. PMID: 21069666 Free PMC article. Review.
Abstract
Background: The original cups used for vacuum extraction delivery of the fetus were rigid metal cups. Subsequently, soft cups of flexible materials such as silicone rubber or plastic were introduced. Soft cups are thought to have a poorer success rate than metal cups. However they are also thought to be less likely to be associated with scalp trauma and less likely to injure the mother.
Objectives: The objective of this review was to assess the effects of soft versus rigid vacuum extractor cups on perineal injury, fetal scalp injury and success rate.
Search strategy: We searched the Cochrane Pregnancy and Childbirth Group trials register and the Cochrane Controlled Trials Register. Date of last search: February 2000.
Selection criteria: Acceptably controlled comparisons of soft versus rigid vacuum extractor cups.
Data collection and analysis: Two reviewers assessed trial quality and extracted data. Study authors were contacted for additional information.
Main results: Nine trials involving 1375 women were included. The trials were of average quality. Soft cups are significantly more likely to fail to achieve vaginal delivery (odds ratio 1.65, 95% confidence interval 1.19 to 2.29). However, they were associated with less scalp injury (odds ratio 0.45, 95% confidence interval 0.15 to 0.60). There was no difference between the two groups in terms of maternal injury.
Reviewer's conclusions: Metal cups appear to be more suitable for 'occipito-posterior', transverse and difficult 'occipito-anterior' position deliveries. The soft cups seem to be appropriate for straightforward deliveries.
Similar articles
- WITHDRAWN: Soft versus rigid vacuum extractor cups for assisted vaginal delivery.
Johanson R, Menon V. Johanson R, et al. Cochrane Database Syst Rev. 2010 Nov 10;2010(11):CD000446. doi: 10.1002/14651858.CD000446.pub2. Cochrane Database Syst Rev. 2010. PMID: 21069666 Free PMC article. Review. - Vacuum extraction versus forceps for assisted vaginal delivery.
Johanson RB, Menon BK. Johanson RB, et al. Cochrane Database Syst Rev. 2000;(2):CD000224. doi: 10.1002/14651858.CD000224. Cochrane Database Syst Rev. 2000. PMID: 10796182 Updated. Review. - WITHDRAWN: Vacuum extraction versus forceps for assisted vaginal delivery.
Johanson R, Menon V. Johanson R, et al. Cochrane Database Syst Rev. 2010 Nov 10;2010(11):CD000224. doi: 10.1002/14651858.CD000224.pub2. Cochrane Database Syst Rev. 2010. PMID: 21069665 Free PMC article. Review. - A multicentre randomized trial comparing delivery with a silicone rubber cup and rigid metal vacuum extractor cups.
Cohn M, Barclay C, Fraser R, Zaklama M, Johanson R, Anderson D, Walker C. Cohn M, et al. Br J Obstet Gynaecol. 1989 May;96(5):545-51. doi: 10.1111/j.1471-0528.1989.tb03253.x. Br J Obstet Gynaecol. 1989. PMID: 2667629 Clinical Trial.
Cited by
- Instruments for assisted vaginal birth.
Verma GL, Spalding JJ, Wilkinson MD, Hofmeyr GJ, Vannevel V, O'Mahony F. Verma GL, et al. Cochrane Database Syst Rev. 2021 Sep 24;9(9):CD005455. doi: 10.1002/14651858.CD005455.pub3. Cochrane Database Syst Rev. 2021. PMID: 34559884 Free PMC article. Review. - The Health Impact of Surgical Techniques and Assistive Methods Used in Cesarean Deliveries: A Systemic Review.
Wang LH, Seow KM, Chen LR, Chen KH. Wang LH, et al. Int J Environ Res Public Health. 2020 Sep 21;17(18):6894. doi: 10.3390/ijerph17186894. Int J Environ Res Public Health. 2020. PMID: 32967222 Free PMC article. - Vacuum-assisted vaginal delivery.
Ali UA, Norwitz ER. Ali UA, et al. Rev Obstet Gynecol. 2009 Winter;2(1):5-17. Rev Obstet Gynecol. 2009. PMID: 19399290 Free PMC article. - Reducing stillbirths: interventions during labour.
Darmstadt GL, Yakoob MY, Haws RA, Menezes EV, Soomro T, Bhutta ZA. Darmstadt GL, et al. BMC Pregnancy Childbirth. 2009 May 7;9 Suppl 1(Suppl 1):S6. doi: 10.1186/1471-2393-9-S1-S6. BMC Pregnancy Childbirth. 2009. PMID: 19426469 Free PMC article. Review. - Vacuum-assisted cesarean section.
McQuivey RW, Block JE. McQuivey RW, et al. Int J Womens Health. 2017 Mar 7;9:151-155. doi: 10.2147/IJWH.S129814. eCollection 2017. Int J Womens Health. 2017. PMID: 28331371 Free PMC article. Review.
Publication types
MeSH terms
LinkOut - more resources
Full Text Sources