Transvaginal ultrasonography at early pregnancy cannot be used alone for targeted organ ultrasonographic examination in a high-risk population

Simcha Yagel, Reuven Achiron, Moshe Ron, Ariel Revel, Eyal Antehy

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE: A study was performed to evaluate whether early second-trimester (13 to 16 weeks) transvaginal scan can be used alone for structure evaluation of the fetus or whether it should be followed by a transabdominal scan performed at 18 to 20 weeks of gestation. STUDY DESIGN: A total of 536 pregnant women at hish risk for birth defects were examined by transvaginal ultrasonography at 13 to 16 weeks' gestation. This was followed by a transabdominal scan at 16 to 20 weeks of pregnancy. Aborted specimens were examined by a pediatric pathologist in terminated pregnancies, and newborn babies were examined by a pediatrician to detect congenital anomalies. RESULTS: Transvaginal ultrasonography performed at 13 to 16 weeks' gestation identified 42 structural anomalies. Of these, 24 pregnancies were terminated and one fetus died. The other 17 fetuses and the rest of the population underwent a second transabdominal survey at 18 to 20 weeks' gestation, which identified eight structural anomalies that were not diagnosed by the previous examination. In five cases the diagnosed anomaly disappeared. Together, the scans brought about the detection of 41 of 46 abnormal fetuses (89%). CONCLUSIONS: Because a significant number of birth defects (17.4%) was not detected by early second-trimester vaginal scan, we recommend that whenever early transvaginal ultrasonographic examination is performed it should be followed by a transabdominal scan at the most advanced stage of pregnancy at which an abortion is still feasible.

Original languageEnglish
Pages (from-to)971-975
Number of pages5
JournalAmerican Journal of Obstetrics and Gynecology
Volume172
Issue number3
DOIs
StatePublished - Mar 1995
Externally publishedYes

Keywords

  • Prenatal diagnosis
  • fetal anomalies
  • transabdominal ultrasonography
  • transvaginal ultrasonography

Fingerprint

Dive into the research topics of 'Transvaginal ultrasonography at early pregnancy cannot be used alone for targeted organ ultrasonographic examination in a high-risk population'. Together they form a unique fingerprint.

Cite this