hCG level below the discriminatory zone in the absence of an intrauterine sac is inconclusive. In hemodynamically stable patients, repeated beta-hCG and TVUS exams are recommended. It is important to note that the discriminatory values of serum hCG for the diagnosis of an intrauterine pregnancy ...
Objective: To discuss the discriminatory zone of serum β-HCG for transvaginal sonography combined with the endometrial thickness in the diagnosis of ectopic pregnancy in Chinese women. Methods: We reviewed 1456 women with the suspicion of ectopic pregnancy( 1056 women with ectopic pregnancy and 400 ...
Discriminatory hCG zone: its use in the sonographic evaluation for ectopic pregnancy. Obstet Gynecol 1981;58(2):156-61.Kadar N, DeVore G, Romero R. Discriminatory hCG zone: its use in the sonographic evalua- tion for ectopic pregnancy. Obstet Gynecol 1981; 58: 156-161....
CONCLUSIONS: Varying the discriminatory zone does not significantly improve the detection of ectopic pregnancy in a PUL population. A single measurement of serum hCG is not only potentially falsely reassuring but also unhelpful in excluding the presence of an ectopic pregnancy....
As a result, new recommendations have been established for identifying milestones in early singleton pregnancy, including a threshold level of hCG = 390–1000 mIU/mL for visualizing a gestational sac, and a discriminatory value of 3000 IU/mL for identifying all normal intrauterine pregnancies. These...
Kadar N, Bohrer M, Kemmann E, Shelden R.: The discriminatory human chorionic gonadotropin zone for endovaginal sonography: a prospective, randomized study. Fertil Steril. 1994;61:1016.Kadar N, Bohrer M, Kemmann E, et al: The dis- criminatory human chorionic gonadotropin zone for endovaginal...
Diagnostic accuracy of ultrasound above and below the beta-hCG discriminatory zone. Obstet Gynecol 1999;94:583 - 7.Diagnostic accuracy of ultrasound above and below the beta-HCG discriminatory zone. Barnhart K T,Simhan H,Kamelle S A. Obstetrics and Gynecology . 1999...
Objective This study aimed to determine the usefulness of the Human Chorionic Gonadotropin (hCG) Discriminatory Zone (DZ) (defined as the serum hCG value above which an intrauterine gestational sac is consistently seen on ultrasound in normal pregnancies1) as a diagnostic tool in the evaluation of...
Conclusions: Viable intrauterine pregnancy is possible in patients with pregnancy of unknown location and hCG levels above the generally accepted discriminatory zone, strict adherence to which can potentially disrupt a normal pregnancy. We support the need for judicious use of the hCG discriminatory ...
Conclusion: The sensitivity, predictive value, and accuracy of transvaginal ultrasound for diagnosing complications of early pregnancy were poor when β-hCG levels were below the discriminatory zone at presentation. Ultrasound impressions should be correlated with β-hCG concentrations. Ectopic pregn...