Sonographic growth measurements in triplet pregnancies

Article Abstract:

Ultrasonographic imaging, which uses high frequency sound to visualize internal structures, can be used to assess the growth of a fetus during pregnancy. Pregnancy management strategies can be altered when growth retardation is detected. During in vitro fertilization procedures, the chance of a triplet pregnancy is increased, since more than one embryo is transferred. The most common complication of triplet pregnancies is premature delivery. In addition, most triplet fetuses are small for gestational age (SGA), defined as smaller than 90 percent of all fetuses the same age. Ultrasonographic growth measurements of 24 triplet pregnancies were compared with measurements of normally growing single fetuses. Measurements made on triplet pregnancies included the diameter of the parietal bones of the skull, head circumference, abdominal circumference, the ration of head circumference to abdominal circumference, and length of the femur (the long leg bone). A slowing of the growth of biparietal diameter, head circumference and abdominal circumference was seen by the 28th week of pregnancy. The head circumference/abdominal circumference ratio and femur length measurements were similar to those obtained from single fetuses. On the basis of these results, growth patterns appear to be different in triplet pregnancies, and thus growth retardation in such cases should not be diagnosed using standard growth curves. Growth curves generated specifically from triplet pregnancies can help identify growth-retarded fetuses. (Consumer Summary produced by Reliance Medical Information, Inc.)

Diagnosis, Fetus, Growth, Fetal growth retardation, Growth disorders, Triplets

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Term interstitial pregnancy with uterine torsion: sonographic, pathologic, and clinical findings

Article Abstract:

Infrequently a pregnancy will occur where the infant develops outside the uterine cavity (interstitial pregnancy) and the situation is complicated by a twisting (torsion) of the uterus. Only two such cases are documented in medical literature and both cases were associated with early gestation. One report is available that records a full-term interstitial pregnancy with live birth. In this case, prenatal sonograms showed an area of copius blood supply (hypervascular area) behind the uterus. Cases of these sort are further complicated by the fact that they are very difficult to diagnose.

Care and treatment, Case studies, Evaluation, Complications and side effects, Pregnancy, Ectopic, Pregnancy, Complications of, Pregnancy complications, Uterine diseases, Prenatal diagnosis, Diagnosis, Ultrasonic, Diagnostic ultrasonography

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