Association of traction force and adverse neonatal outcome in vacuum‐assisted vaginal delivery: A prospective cohort study

Pettersson, Kristina; Westgren, Magnus; Blennow, Mats; Ajne, Gunilla

doi:10.1111/aogs.13952

Cited by 2 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Is it possible, with current knowledge, to design a safety limit for total traction force during VAD? Pettersson et al 27 studied a cohort of 331 VADs delivered with the VIH3. The prevalence of severe perinatal outcomes was 1.8% and admittance to the NICU was 7.2%.…”

Section: Discussionmentioning

confidence: 99%

“…The VIH3 was implemented as part of two prospective clinical studies 27 , 29 and used by obstetricians (Supporting Information Figure S1 ). It is hooked to a Bird metal cup (only the 50 mm cup was used) applied to the fetal scalp with 80 kPa negative pressure and contains a force sensor that is connected via Bluetooth® to a tablet computer.…”

Section: Methodsmentioning

confidence: 99%

“…The VIH3 was implemented as part of two prospective clinical studies 27,29 and used by obstetricians (Supporting Information Figure S1). It Conclusions: Children with severe perinatal outcomes had traction force profiles with significantly higher forces.…”

Section: Digital Vacuum Extraction Procedures and Calculation Of Prim...mentioning

confidence: 99%

“…The previous suggested peak force limits of 216–220 Newtons for cup detachment, 23 , 24 , 25 as well as the force used by the operator during traction, are often underestimated. 26 According to Pettersson et al, 27 a high level of total traction force is associated with an increased risk of admission to the neonatal intensive care unit (NICU).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Traction force profile in children with severe perinatal outcomes delivered with a digital vacuum extraction handle: A case–control study

Romero

Pettersson

Yousaf

et al. 2022

Acta Obstet Gynecol Scand

Self Cite

View full text Add to dashboard Cite

Introduction:During the second stage of labor, vacuum-assisted delivery is an alternative to forceps delivery and emergency cesarean section. Extensive research concerning perinatal outcomes has indicated that the risk of complications, although rare, is higher than with a spontaneous vaginal delivery. An important factor related to perinatal outcomes is the traction force applied. Our research group previously developed a digital extraction handle, the Vacuum Intelligent Handle-3 (VIH3), that measures and records traction force. The objective of this study was to compare traction force profiles in children with and without severe perinatal outcomes delivered with the digital handle. A secondary aim was to establish a safe force limit.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Digital Vacuum Extraction Procedures and Calculation Of Prim...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Traction force profile in children with severe perinatal outcomes delivered with a digital vacuum extraction handle: A case–control study

Romero

Pettersson

Yousaf

et al. 2022

Acta Obstet Gynecol Scand

Self Cite

View full text Add to dashboard Cite

show abstract

Experimental Assessment of Traction Force and Associated Fetal Brain Deformation in Vacuum-Assisted Delivery

Pitti,

Herling,

et al. 2024

Ann Biomed Eng

View full text Add to dashboard Cite

Vacuum-assisted delivery (VAD) uses a vacuum cup on the fetal scalp to apply traction during uterine contractions, assisting complicated vaginal deliveries. Despite its widespread use, VAD presents a higher risk of neonatal morbidity compared to natural vaginal delivery and biomechanical evidence for safe VAD traction forces is still limited. The aim of this study is to develop and assess the feasibility of an experimental VAD testing setup, and investigate the impact of traction forces on fetal brain deformation. A patient-specific fetal head phantom was developed and subjected to experimental VAD in two testing setups: one with manual and one with automatic force application. The skull phantom was 3D printed using multi-material Polyjet technology. The brain phantom was cast in a 3D-printed mold using a composite hydrogel, and sonomicrometry crystals were used to estimate the brain deformation in three brain regions. The experimental VADs on the fetal head phantom allowed for quantifying brain strain with traction forces up to 112 N. Consistent brain crystal movements aligned with the traction force demonstrated the feasibility of the setup. The estimated brain deformations reached up to 4% and correlated significantly with traction force (p < 0.05) in regions close to the suction cup. Despite limitations such as the absence of scalp modeling and a simplified strain computation, this study provides a baseline for numerical studies and supports further research to optimize the safety of VAD procedures and develop VAD training platforms.

show abstract

Association of traction force and adverse neonatal outcome in vacuum‐assisted vaginal delivery: A prospective cohort study

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri butio n-NonCo mmerc ial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Cited by 2 publications

References 29 publications

Traction force profile in children with severe perinatal outcomes delivered with a digital vacuum extraction handle: A case–control study

Traction force profile in children with severe perinatal outcomes delivered with a digital vacuum extraction handle: A case–control study

Experimental Assessment of Traction Force and Associated Fetal Brain Deformation in Vacuum-Assisted Delivery

Contact Info

Product

Resources

About