A randomised prospective study comparing the new vacuum extractor policy with forceps delivery
- 1 June 1993
- journal article
- clinical trial
- Published by Wiley in BJOG: An International Journal of Obstetrics and Gynaecology
- Vol. 100 (6), 524-530
- https://doi.org/10.1111/j.1471-0528.1993.tb15301.x
Abstract
To compare assisted vaginal delivery by forceps with delivery by vacuum extractor, where a new vacuum extractor policy was employed which dictated the cup to be used in specific situations. Multicentre randomised controlled trial. Four district general hospitals in the West Midlands. Six hundred-seven women requiring assisted vaginal delivery, of whom 296 were allocated to vacuum extractor delivery and 311 to forceps. Delivery success rate, maternal perineal and vaginal injuries, maternal anaesthetic requirements, neonatal scalp and facial injuries. Of the vacuum extractor group, 85% were delivered by the allocated instrument compared to 90% in the forceps group (odds ratio (OR) 0.64; 95% confidence intervals (CI) 0.4-1.04). However, more women in the vacuum extractor group were delivered vaginally (98%) than in the forceps group (96%). There were significantly fewer women with anal sphincter damage or upper vaginal extensions in the vacuum extractor group (11% vs 17%, OR 0.6; 95% CI, 0.38-0.97). There were significantly fewer women in the vacuum extractor group requiring epidural or spinal anaesthetics (25.4% vs 32.7%, OR 0.69; 95% CI 0.49-0.99) or general anaesthetics (1% vs 4%, OR 0.17; 95% CI 0.04-0.76). Although there were significantly more babies in the vacuum extractor group with cephalhaematomata (9% vs 3%, OR 3.3; 95% CI 1.4-7.4) there were fewer babies in the vacuum extractor group with other facial injuries. There were three babies in the forceps group with unexplained neonatal convulsions. Assisted vaginal delivery using the new vacuum extractor policy is associated with significantly less maternal trauma than with forceps. Further studies are required to assess neonatal morbidity adequately.Keywords
This publication has 18 references indexed in Scilit:
- The obstetric forceps–are we using the appropriate tools?BJOG: An International Journal of Obstetrics and Gynaecology, 1990
- North Staffordshire/Wigan assisted delivery trialBJOG: An International Journal of Obstetrics and Gynaecology, 1989
- Forceps or Vacuum Extraction? A Comparison of Effects on the Newborn InfantActa Obstetricia et Gynecologica Scandinavica, 1986
- Comparison Between the Conventional Malmström Extractor and a New Extractor with Silastic CupActa Obstetricia et Gynecologica Scandinavica, 1986
- Follow Up of Babies Delivered in a Randomized Controlled Comparison of Vacuum Extraction and Forceps DeliveryActa Obstetricia et Gynecologica Scandinavica, 1986
- Portsmouth operative delivery trial: a comparison vacuum extraction and forceps deliveryBJOG: An International Journal of Obstetrics and Gynaecology, 1983
- Should we abandon Kielland's forceps?BMJ, 1983
- Kielland's forceps: association with neonatal morbidity and mortality.BMJ, 1979
- THE IMPORTANCE OF FLEXION IN VACUUM EXTRACTOR DELIVERYBJOG: An International Journal of Obstetrics and Gynaecology, 1976
- Massive Subaponeurotic Haemorrhage in Infants Born by Vacuum ExtractionBMJ, 1969