... MMeeddiiccaall SScciieenncceess 2011; 8(5):439-444 Research Paper Maternal Outcomes According to Placental Position in Placental Previa Dong Gyu Jang, Ji Sun We, Jae Un Shin, Yun Jin Choi, Hyun Sun Ko, In ... (OR 3.47, 95% CI: 1.39-8.68) was higher. Conclusion: Sonographic determination of the placental position where its location be-neath the uterine incision is very important to predict ... hemorrhage. Key words: hemorrhage, hysterectomy, maternal outcomes, placental accreta, placental position, placental previa Introduction Generally, the frequency of placental previa is 4 in 1,000...