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Obstetrics & Gynecology 1973;42:684-688
© 1973 by The American College of Obstetricians and Gynecologists
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Placental Localization and Diagnosis of Antenatal Hemorrhage by Ultrasonography

GINO TUTERA, MD and ROBERT L. NEWMAN, MD

Department of Obstetrics and Gynccology at St. Luke's Hospital, Kansas City, Missouri.

A method for improving the accuracy of placental localization by ultrasound is offered. The simple adjustment of the far gain setting, without any other alteration in the procedure, gave 100% accuracy, with the correct diagnosis of all posterior placentas. Fifty-one randomly chosen gravid patients were scanned prior to a) aminiocentesis or b) cesarcan section, as part of a fetal growth curve study, and c) in every case of third trimester bleeding. All cases were correctly diagnosed, including 5 placenta previas and 25 posterior placentas. By diagnosing the cases with a posterior placenta, the most common cause of error was eliminated. Examples of the use of ultrasound for diagnosing the causes of antenatal bleeding are presented.






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Copyright © 1973 by the American College of Obstetricians and Gynecologists.