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• W2100322517 abstract "Abstract Context: Ectopic pregnancy (EP) is an important cause of maternal deaths in early pregnancy because most fatal cases result from delayed diagnosis and inappropriate investigation. Objective: We evaluated whether the measurement of activin A may be useful in the diagnosis of EP in women with unknown pregnancy location. Design: The study was designed as an open observational study. Setting: The study was set in a tertiary referral center for obstetric care. Patients: Patients were women with unknown pregnancy location (n = 536) who had complaints of bleeding, pain, or cramping. Interventions: Interventions included clinical examination; transvaginal ultrasound scan; human chorionic gonadotropin (hCG), progesterone, and activin A measurements; laparoscopy; uterine curettage; and histological examination. Main Outcome Measures: Main outcome measures were pregnancy outcomes and evaluation of sensitivity, specificity, and predictive values of hCG, progesterone, and activin A as diagnostic tests for the detection of EP. Results: Pregnancy outcomes included 155 (28.9%) viable intrauterine pregnancies (IUP), 305 (56.9%) first-trimester spontaneous abortion (SAB), and 76 (14.2%) EP. SAB had the lowest (P &lt; 0.0001) hCG and progesterone concentrations, significantly lower than EP (P &lt; 0.001) and IUP (P &lt; 0.001). In EP, levels were significantly (P &lt; 0.001) lower than in IUP. On the contrary, activin A levels were lowest (P &lt; 0.0001) in EP, significantly lower than in SAB (P &lt; 0.001) and IUP (P &lt; 0.001). IUP had significantly (P &lt; 0.001) lower activin A levels than SAB. When evaluated by the receiver operating curve analysis, activin A at the cutoff of 0.37 ng/ml combined a sensitivity and a specificity of 100 and 99.6%, respectively, for prediction of EP. When activin A concentrations were below the cutoff, the positive predictive value for EP was 97.43%, and 0% for concentrations higher than 0.37 ng/ml. Conclusions: Activin A measurement may identify patients at risk of EP with a high sensibility and specificity." @default.
• W2100322517 created "2016-06-24" @default.
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• W2100322517 date "2007-05-01" @default.
• W2100322517 modified "2023-09-26" @default.
• W2100322517 title "Single Serum Activin A Testing to Predict Ectopic Pregnancy" @default.
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• W2100322517 doi "https://doi.org/10.1210/jc.2006-2188" @default.
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