Читать книгу Protocols for High-Risk Pregnancies - Группа авторов - Страница 93

As earlier and earlier identification of fetal anomalies with ultrasound has become more common, most patients who choose invasive diagnostic testing typically rely on chorionic villus sampling or amniocentesis, which can yield earlier results than cordocentesis would. In addition, the advent of noninvasive prenatal testing (NIPT) has also decreased patient requests for invasive testing overall, especially in the setting of normal sonographic findings. Cytogenetic analysis via fetal blood sampling is usually reserved for cases where quick turnaround of results is required, such as when a patient is nearing the gestational age for legal termination of pregnancy or when the results might affect delivery planning and neonatal management of a fetus with an anatomical abnormality.