Total Pregnancy Loss After Chorionic Villus Sampling and Amniocentesis: A Cohort Study

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(Abstracted from Ultrasound Obstet Gynecol 2017;49:599–606)Invasive prenatal procedures such as chorionic villus sampling (CVS) and amniocentesis are often assessed based on their procedure-related fetal loss rate (FLR), which is defined as the total FLR minus the spontaneous FLR. Spontaneous FLR is determined based on the maternal risk profile, whereas procedure-related risk depends on operator experience, technical difficulties, and instruments utilized.

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