Diagnosis of ectopic pregnancy: value of the discriminatory human chorionic gonadotropin zone.
Romero R, Kadar N, Jeanty P, Copel J, Chervenak F, DeCherney A, Hobbins J. Diagnosis of ectopic pregnancy: value of the discriminatory human chorionic gonadotropin zone. Obstetrics And Gynecology 1985, 66: 357-60. PMID: 3895079.Peer-Reviewed Original ResearchConceptsIntrauterine gestational sacEctopic pregnancyHuman chorionic gonadotropinGestational sacPredictive valueSerum hCG determinationsPercent of patientsPelvic ultrasound examinationMIU/mLNegative predictive valuePositive predictive valueHCG levelsIntrauterine gestationSerum levelsProspective studyMIU/Spontaneous abortionUltrasound examinationHCG concentrationsChorionic gonadotropinHCG determinationsPregnancyPatientsSacGestation