Transvaginal ultrasonography in patients at risk for ectopic pregnancy
Stiller R, de Regt R, Blair E. Transvaginal ultrasonography in patients at risk for ectopic pregnancy. American Journal Of Obstetrics And Gynecology 1989, 161: 930-933. PMID: 2679107, DOI: 10.1016/0002-9378(89)90755-2.Peer-Reviewed Original ResearchMeSH KeywordsChorionic GonadotropinDiagnosis, DifferentialFemaleHumansOvarian CystsPregnancyPregnancy, EctopicUltrasonographyConceptsTransvaginal ultrasonographyEctopic pregnancyHuman chorionic gonadotropinIntrauterine pregnancyGestational sacMIU/Initial evaluationChorionic gonadotropinHuman chorionic gonadotropin valuesEarly intrauterine pregnancyIntrauterine gestational sacEctopic gestationComplete abortionGonadotropin valuesSerial measurementsPregnancyUltrasonographyPatientsGonadotropinSacDirect visualizationRiskNonvisualizationGestationEvaluation