Detailed procedure of a 4-month abortion surgery
There are mainly four methods for inducing labor at 4 months of pregnancy: intra-amniotic Rivanol induction, water bag induction, intravenous oxytocin induction, and prostaglandin stimulation. Induction procedures should be performed in a正规 hospital. Taking water bag induction as an example, the specific procedure is as follows:
1. Before the procedure, the patient should empty her bladder and assume the lithotomy position. The doctor performs routine disinfection of the external genitalia and vagina, then lays down sterile drapes. A speculum is used to dilate the vagina, vaginal secretions are cleaned away, the cervix is exposed, and both the cervix and cervical canal are disinfected with iodine and alcohol.
2. The tip of the prepared water bag is coated with sterile lubricant. A cervical clamp is used to grasp the anterior lip of the cervix, and a toothless oval forceps is used to insert the water bag along the lateral wall of the uterine cavity. Insertion stops when the second knot reaches the external cervical os, ensuring the lower edge of the bag is positioned above the internal cervical os.
3. Untie the suture on the catheter and slowly inject sterile normal saline using a syringe. For more advanced gestational ages, two water bags may be inserted, each filled with 150–250 ml of saline. The standard volume injected is typically calculated as gestational months multiplied by 100 ml.
4. After injection, fold the end of the catheter and tightly tie it with thick silk thread. Remove the cervical clamp, wrap the end with gauze, place it into the posterior fornix of the vagina, and remove the vaginal speculum.
5. The water bag should be removed after 24 hours or once labor signs appear. After removal, the pregnant woman will expel the fetus and placenta from her body.
Pregnant women should choose an appropriate method of induction based on their physical condition. Comprehensive preoperative examinations are essential to prevent infertility following the procedure.
