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Experimental Assessment of Traction Force and Associated Fetal Brain Deformation in Vacuum-Assisted Delivery.
Ann Biomed Eng
December 2024
Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Stockholm, Sweden.
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.
View Article and Find Full Text PDFEffect of a perineal protection device in vacuum-assisted births-a prospective randomized controlled interventional trial.
Am J Obstet Gynecol MFM
December 2024
Division of Obstetrics, University Hospital of Zurich and University of Zurich, Zurich, Switzerland (Drs Hoeller, Birri, Ochsenbein-Koelble, Richter, and Kimmich). Electronic address:
Background: Birth tears are common after vaginal birth with a prevalence of up to 85%, especially in vaginal-assisted births. Because birth trauma can cause physical and psychological short-term and long-term maternal morbidity, it is essential to improve maternal outcomes at birth.
Objective: This study aimed to evaluate the effect of a perineal protection device on the rate of spontaneous birth tears in the posterior compartment in vacuum-assisted births and the feasibility and safety of the device.
Novel risk factors associated with retained placenta after vaginal birth.
Int J Gynaecol Obstet
October 2024
Department of Obstetrics and Gynecology, Nazareth Hospital, Affiliated with The Azrieli Faculty of Medicine, Bar-Ilan University, Nazareth, Israel.
Article Synopsis
- - The study evaluated maternal and obstetric risk factors linked to retained placenta following vaginal births in women who were at least 24 weeks pregnant.
- - Researchers conducted a retrospective analysis, comparing 99 women with retained placenta to 198 women with uncomplicated deliveries, and identified new risk factors like in vitro fertilization and having large-for-gestational-age babies.
- - The findings emphasize the significance of recognizing these risk factors early in order to enhance outcomes for both mothers and newborns.
Differences in Time of Birth between Spontaneous and Operative Vaginal Births.
Am J Perinatol
November 2024
Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.
Article Synopsis
- The study examines how the time of day affects the likelihood of operative vaginal births (OVBs) compared to spontaneous vaginal births (SVBs) using U.S. birth data from 2016 to 2021.
- After analyzing over 15 million births, it was found that OVBs were more common during the late afternoon (4:30-7:30 p.m.) and less common in the early morning (3:00-6:00 a.m.).
- The results suggest that different times of day influence the use of birth intervention methods, indicating a need for further research into the reasons behind these temporal trends.
How time influences episiotomy utilization and obstetric anal sphincter injuries (OASIS).
J Perinat Med
October 2024
Rappaport Faculty of Medicine, Technion University, Haifa, Israel.
Article Synopsis
- The study examines the relationship between mediolateral episiotomy and obstetric anal sphincter injuries (OASIS) in young women post-childbirth, aiming to clarify existing uncertainties.
- Conducted at a tertiary medical center with data from 18,202 vaginal and vacuum-assisted deliveries from 2015 to 2021, the study observed a decline in episiotomy rates and an increase in OASIS during the latter period.
- The results indicate that while episiotomy use has decreased, there’s no significant association between episiotomy and OASIS; instead, the use of epidural analgesia showed a protective benefit against OASIS.
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