#Ultrasound screen marker plus

Stricter sonographic criteria for early nonviability guard against unnecessary intervention. When indicated, scans in early gestation are valuable in accurate gestational dating. The ability to either reassure a high-risk woman with normal intrauterine images or offer comprehensive counseling and offer options in cases of strongly suspected lethal or major malformations has shifted prenatal diagnoses to the earliest possible gestational age. With refinement in ultrasound technology, detection of fetal structural abnormalities has improved and there have been detailed reports of the natural history and expected outcomes for many anomalies. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA. Discussion In high-risk populations, a first-trimester US in addition to a second-trimester US may be a beneficial approach to detecting anomalies. In populations with higher anomaly prevalence and lower second-trimester US sensitivity (i.e., diabetes, obesity), the number of additional US performed per anomaly detected with the first-trimester US was < 60. The addition of a first-trimester anatomy US was associated with a small increase in the false-positive US (< 10/10,000).

#Ultrasound screen marker plus

Results A strategy of first- plus second-trimester US detected the highest number of anomalies but required more US examinations per anomaly detected. Multivariable sensitivity analyses were performed to evaluate the consistency of the model with varying assumptions. Outcomes considered were number of: major structural anomalies detected, US performed, and false-positive US. Probability estimates were obtained from the literature. Materials and Methods A decision analytic model was created to compare first- plus second-trimester anatomy scans to second-trimester scan alone in four populations: general, normal weight women, obese women, and diabetics. We sought to assess the utility of first-trimester US for evaluation of fetal anatomy. Introduction First-trimester ultrasound (US) for anatomy assessment may improve anomaly detection, but it may also increase overall US utilization. Since completion rates for ultrasound aneuploidy screening are inversely related to maternal obesity, obese women are underscreened. Completion rates differed significantly between groups (64% normal, 64% overweight, 61% class I, 55% class II, 47% class III, p or=1 marker) differed significantly overall (16% normal, 13% overweight, 15% class I, 12% class II, 10% class III, p < 0.02), but not for complete examinations (p = 0.42). Of 14 353 ultrasounds reviewed, 5690 patients were eligible: 43% normal, 29% overweight, 27% obese. Examinations with visualization of at least seven of eight markers were considered complete. To determine the completion rate of ultrasound surveys for aneuploidy markers by maternal body mass index (BMI).Ī retrospective review of ultrasounds on midtrimester singleton pregnancies was performed.