Which technique is better to place a manoeuvrable vacuum extractor cup on the flexion point? Vacca vs. Bird technique.

Journal of Perinatal Medicine
Marcos Javier CuervaMarta Cortés

Abstract

Objectives The purpose of this study is to compare the vacuum extractor cup application technique described by Bird vs. the technique described by Vacca on a simulation model. Methods Six obstetricians participated in the study. Each obstetrician performed eight vacuum assisted deliveries using the Bird technique and eight vacuum assisted deliveries using the Vacca 5-Steps technique. Results A total of 96 vacuum assisted deliveries were performed. The mean distance from the centre of the cup to the flexion point was 1.78±0.96 cm for the Bird technique and 1.05±0.60 cm for the Vacca technique (p<0.001). The lateral distance (over the parietal bone) was 1.16±0.69 cm for the Bird technique and 0.66±0.52 cm for the Vacca technique (p<0.001). The vertical distance (towards the frontal or occipital bone) was 1.12±1.02 cm for the Bird technique and 0.67±0.55 cm for the Vacca technique (p=0.009). In occipito anterior positions, there were no significant differences between both techniques. Conclusions The Vacca technique was better in transverse and posterior positions.

References

Mar 1, 1976·British Journal of Obstetrics and Gynaecology·G C Bird
Jul 17, 2001·The Australian & New Zealand Journal of Obstetrics & Gynaecology·A Vacca
Apr 28, 2006·The Australian & New Zealand Journal of Obstetrics & Gynaecology·Aldo Vacca
Jul 23, 2008·Journal of Obstetrics and Gynaecology Canada : JOGC = Journal D'obstétrique Et Gynécologie Du Canada : JOGC·Thomas F BaskettDavid C Young
Aug 9, 2008·The Journal of Obstetrics and Gynaecology Research·Nor Azlin M IsmailZainul Rashid M Razi
May 18, 2018·Acta Obstetricia Et Gynecologica Scandinavica·Birgitte H KahrsTorbjørn M Eggebø
Jun 12, 2018·Obstetrics and Gynecology·Andrew J Satin
Jul 6, 2018·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·T GhiB Tutschek
Sep 27, 2018·Best Practice & Research. Clinical Obstetrics & Gynaecology·Thomas F Baskett

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