• M Predanic.
• Department of Obstetrics and Gynecology, Flushing Hospital Medical Center, Flushing, New York 11355, USA.
• Fertil. Steril. 2000 Mar 1; 73 (3): 522-5.

ObjectiveTo determine whether serum CA-125 and serial beta-hCG levels can be used to distinguish between tubal abortion and viable ectopic pregnancy (EP).DesignRetrospective cohort study.SettingA tertiary care institution.Patient(S)Twenty-six women with EPs of 7-12 weeks' duration were studied retrospectively. Five had laparoscopically proved tubal abortions and 21 had active, viable EPs at the time of entry into the study. All but 3 of the latter group were managed surgically; the others were given a single dose of methotrexate.Intervention(S)Surgical removal of EPs by means of laparoscopy or laparotomy, or medical treatment of the disease.Main Outcome Measure(S)Serum CA-125 and beta-hCG determinations were used to differentiate tubal abortion and viable EP. The results were compared with the findings at surgery.Result(S)The mean (+/-SD) CA-125 level was 112.2 +/- 11.9 IU/mL for the patients with tubal abortion and 30.1 +/- 15.3 IU/mL for the patients with viable EP. The mean (+/-SD) beta-hCG level was 3,643 +/- 3,718 IU/L for the patients with tubal abortion and 10,755 +/- 11,465 IU/L for the patients with viable EP. Linear regression analysis showed a statistically insignificant inverse relation between serum CA-125 and beta-hCG levels.Conclusion(S)The use of CA-125 levels as an adjunct to serial beta-hCG levels shows promise as a means for differentiating tubal abortion from viable EP.

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