Amniocentesis carries a measurable risk of miscarriage
Current systematic reviews and meta-analyses indicate that amniocentesis carries a measurable risk of miscarriage, though modern estimates (generally under 1%) are considerably lower than historical figures.
The retrieved literature consistently reports a measurable, albeit low, percentage of miscarriages following amniocentesis. While modern studies emphasize that the procedure-related risk is lower than traditionally quoted (frequently around 0.5% to 1%), the overall risk itself remains measurable and documented across multiple large-scale meta-analyses and cohort studies.
R. Akolekar, J. Beta, G. Picciarelli, C. Ogilvie, F. D'Antonio. Procedure‐related risk of miscarriage following amniocentesis and chorionic villus sampling: a systematic review and meta‐analysis. 2015. https://doi.org/10.1002/uog.14636
A systematic review and meta-analysis estimated the overall risk of miscarriage prior to 24 weeks following amniocentesis at 0.81%.
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L. Salomon, A. Sotiriadis, C. Wulff, A. Odibo, R. Akolekar. Risk of miscarriage following amniocentesis or chorionic villus sampling: systematic review of literature and updated meta‐analysis. 2019. https://doi.org/10.1002/uog.20353
An updated systematic review and meta-analysis confirmed that amniocentesis carries a measurable, though historically overestimated, risk of procedure-related complications.
J. Beta, W. Zhang, S. Geris, V. Kostiv, R. Akolekar. Procedure‐related risk of miscarriage following chorionic villus sampling and amniocentesis. 2019. https://doi.org/10.1002/uog.20293
A large retrospective cohort study found an amniocentesis miscarriage rate of 0.8%, though noting it was not statistically different from unexposed control groups.
Kelly Steinfort, Ellen Van Houtven, Yves Jacquemyn, Bettina Blaumeiser, Philip Loquet. Difference in Procedure-Related Risk of Miscarriage between Early and Mid-Trimester Amniocentesis: A Retrospective Cohort Study. 2021. https://doi.org/10.3390/diagnostics11061098
A comparative cohort study evaluating early versus mid-trimester amniocentesis reported procedure-related fetal loss rates ranging between 0.36% and 0.82%.
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