Induction of labor by water bladder

Water sac induction is the method of placing the water sac between the uterine wall and the membrane, increasing the intrauterine pressure and mechanical stimulation of the cervical canal, inducing and causing uterine contraction, and promoting the termination of pregnancy between the fetus and the placenta. Its success rate of induction can reach more than 90%. The average induction time is mostly within 72 hours. Treatment of diseases: pregnancy with rheumatic heart disease, pregnancy-induced hypertension syndrome Indication 1. Those who require termination of pregnancy within 13 to 24 weeks of gestation; those who are not eligible for further pregnancy due to certain conditions; those who need to terminate pregnancy for various reasons in late pregnancy. 2. Vaginal cleanliness within 1 to 2 degrees, no vaginal inflammation, no sexual intercourse within three days. 3. Body temperature does not exceed 37.5 °C. Contraindications 1. The acute phase of various systemic diseases. 2. The uterus has scars. 3. Acute inflammation of the reproductive organs. 4. During pregnancy, there are repeated vaginal bleeding and placenta previa, stillbirth or expired abortion. For advanced pregnancy, it also includes severe pregnancy-induced hypertension, heart failure, heart failure, polyhydramnios and premature rupture of membranes. Preoperative preparation 1. Examination of vaginal secretions. 2. Hematuria routine and liver and kidney function tests. 3.b super-check to determine the position of the placenta as a reference for the location of the water bladder. 4. Vaginal disinfection 1 time / day, a total of 3 days. Surgical procedure 1. The genital area is prepared for skin, and the bladder is evacuated before surgery. 2. The patient takes the bladder lithotomy position, routine disinfection of the vulva and vagina, and toweling. 3. Use the speculum to dilate the vagina, wipe out the vaginal secretions, and expose the cervix. 4. The cervix and neck tube are disinfected with iodine and alcohol. 5. Apply the prepared tip of the water bladder to the sterile lubricant, use the cervical forceps to pull the anterior lip of the cervix, and use the non-toothed oval forceps to send the water sac into the side wall of the uterine cavity. The knot of the knot enters the cervix and stops, indicating that it has been placed 8 cm, and its lower edge has reached the upper end of the cervix. For the induction of labor in late pregnancy, the water sac can be sent to the 5cm ligature, which means that the internal cervix has been reached. The catheter line was unfastened and the syringe was slowly infused with sterile saline. In the mid-term induction of labor, two vesicles can be placed at the time of gestational age, each injecting 150-250 ml of normal saline, and the injection amount is calculated conventionally in gestational month × 100 ml. After the injection, the end of the catheter was folded, tied with a thick thread, and the cervical pliers were removed. The gauze was wrapped and placed in the vagina and the vaginal speculum was removed. Be careful when placing the water bladder. (1) Do not touch the vaginal wall. (2) Avoid repeated operations. (3) If there is bleeding when put in, the amount is too much, should be taken out immediately to stop the operation, the amount of bleeding is small, you can change the direction and then put it. (4) If there is resistance when filling the water, stop the operation. If the first water bladder fails to induce labor, it can be reused for the second time. If the loser fails, other methods should be used to induce labor. 6. The water bag is taken out after 24 hours or after the birth.