Sonography of pregnancies with first-trimester bleeding and a small intrauterine gestational sac without a demonstrable embryo

摘要: Objective This was a prospective observational cohort study to evaluate the outcome and prognostic criteria of pregnancies with first-trimester bleeding gestational sac ≤16 mm without demonstrable embryo. Methods Criteria for admission into included: (1) bleeding; (2) transvaginal scan performed upon demonstrating single intrauterine mean diameter embryo. The variable miscarriage, defined as pregnancy loss prior 22 weeks. following explanatory variables were considered: maternal age, menstrual size sac, presence or absence yolk subchorionic hematoma, β-human chorionic gonadotropin levels. relationship these failure analyzed by stepwise logistic regression. Results Of 50 patients, 32 (64%) underwent miscarriage. receiver–operating characteristics (ROC) curve demonstrated high level statistical significance (area under ROC 0.9080, P < 0.000001) regression revealed that this only independently correlated subsequent occurrence miscarriage. Discussion It is commonly accepted in pregnant patients bleeding, demonstration ultrasound an embryo may be compatible viable pregnancy. Our results suggest general finding associated poor outcome, miscarriage occurring two-thirds patients. When small risk greatly increased. In present series, less than −1.34 standard deviations over 90% cases. Copyright © 2002 ISUOG. Published John Wiley & Sons, Ltd.