ABSTRACT
Objective To evaluate the clinical effect and influential factors of intrauterine device (IUD) after insertion under B-type ultrasound guidance. Methods A total of 434 healthy women of childbearing potential, aged for 18 to 40 years were enrolled. After IUD insertion under ultrasound guidance, the uterine profile was observed during the procedure and the patients’ biological characteristic was recorded and gynecologic examiation was performed at month 1, 3, 6, 12, 18 during following up. All data were analyzed with SPSS software. Results There was no accident in operation.In 18 months after IUD insertion, the pregnancy rate with IUD was 1.94%,the expulsion rate was 4.59% and the removal rate was 5.54%. The risk factors of expulsion were the history with cesarean delivery and artificial abortion plus IUD insertion (P