Impact of chorionicity on risk and timing of intrauterine fetal demise in twin pregnancies

Objective We sought to estimate the association between chorionicity and intrauterine fetal demise (IUFD) of one or both fetuses in twin pregnancies. Study Design In a retrospective cohort of twins undergoing anatomic survey, risk of IUFD in monochorionic and dichorionic twins was compared. The prim...

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Bibliographic Details
Published in:American journal of obstetrics and gynecology 2012-09, Vol.207 (3), p.190.e1-190.e6
Main Authors: McPherson, Jessica A., MD, Odibo, Anthony O., MD, MSCE, Shanks, Anthony L., MD, Roehl, Kimberly A., MPH, Macones, George A., MD, MSCE, Cahill, Alison G., MD, MSCI
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Chorion
Female
Gynecology. Andrology. Obstetrics
Humans
intrauterine fetal demise
Medical sciences
multiple gestation
Obstetrics and Gynecology
Pregnancy
Pregnancy, Twin
Retrospective Studies
Risk Factors
Stillbirth
Time Factors
Twins, Dizygotic
Twins, Monozygotic
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Summary:Objective We sought to estimate the association between chorionicity and intrauterine fetal demise (IUFD) of one or both fetuses in twin pregnancies. Study Design In a retrospective cohort of twins undergoing anatomic survey, risk of IUFD in monochorionic and dichorionic twins was compared. The primary outcome was IUFD of one or both fetuses; secondary outcomes included nonanomalous fetal deaths. Results Of 2161 twin pregnancies meeting inclusion criteria, 86 had at least 1 IUFD and 32 experienced a double fetal loss. Monochorionic pregnancies had an increased risk of a single demise (adjusted odds ratio, 1.69; 95% confidence interval, 1.04–2.75) and a double demise (adjusted odds ratio, 2.11; 95% confidence interval, 1.02–4.37). Of all double demises, 70% occurred
ISSN:0002-9378
1097-6868
DOI:10.1016/j.ajog.2012.07.031