Midwifery Conference 2023

Jenny Stokes

Division of Women’s Health, University College London Hospitals NHS Foundation Trust , United Kingdom

Title: Chance of healthy versus adverse outcome in subsequent pregnancy after previous loss beyond 16 weeks: data from a specialised follow-up clinic.

Abstract

Introduction
Women with a previous fetal demise have a 2-20 fold increased risk of another stillbirth in a subsequent pregnancy when compared to those who have had a live birth. Despite this, there is limited research regarding the management and outcomes of subsequent pregnancies.  This study was conducted to accurately quantify the chances of a woman having a healthy subsequent pregnancy after a pregnancy loss.
 
Methods
A retrospective study was conducted at a tertiary level unit between March 2019 and April 2021. We collected data on all women with a history of previous fetal demise attending a specialised perinatal history clinic and compared the risk of subsequent stillbirth to those with a normal pregnancy outcome. Outcome data included birth outcome, obstetric and medical complications, gestational age and birth weight and mode of delivery. Those who had healthy subsequent pregnancies were compared with those who experienced adverse outcomes.  
 
Results
A total of 101 cases were reviewed. Ninety-six women with subsequent pregnancies after a history of fetal demise  from 16 weeks were included. Seventy-nine percent of women (n= 76) delivered a baby at term, without complications. Overall, 2.1% had repeat pregnancy losses (n=2) and 2.1% delivered babies with fetal growth restriction (n=2). There were no cases of abruption in subsequent pregnancy.  Eighteen neonates were delivered  prematurely (18.4%), 15 of these (83.3%) were due to iatrogenic causes, three (16.7%) were spontaneous. In univariable logistic regression analyses, those with adverse outcomes in subsequent pregnancies had a greater odds of pre-eclampsia (Odds ratio *(OR)=3.89, 95% CI 1.05-14.43 p=0.042) and fetal growth restriction (OR=4.58 95% CI 1.41-14.82, p=0.011 in previous pregnancies compared to those with healthy outcomes.  However, in multivariable logistic regression analyses, neither variable had a significant odds ratio (OR = 2.03, 95% CI  0.44 - 9.39, p = 0.366 and OR = 3.42, 95% CI 0.90 - 13.09, p = 0.072 for pre-eclampsia and FGR, respectively).
 
Conclusion
Four in five women had a healthy subsequent pregnancy. This is a reassuring figure for women when contemplating another pregnancy, particularly if cared for in a specialist clinic.  

Biography

Jenny Stokes is an Obstetrician & Gynaecologist in training. She completed Basic Specialist Training through the Royal College of Physicians in Ireland and then completed a Clinical Fellowship in Obstetric Ultrasound & Fetal Medicine at University College London. She holds MRCPI and MRCOG and is due to commence Higher Specialist Training with the Royal College of Physicians in Ireland from July 2023. She has a keen interest in high risk Obstetrics, Maternal-Fetal Medicine and Reproductive Medicine