Abortion, Induced
Conditions
Brief summary
The purpose of this clinical trial is to evaluate the safety and efficacy of the estradiol-loaded silicone rubber intrauterine stent system for promoting endometrial repair after artificial abortion. The main research questions it aims to answer are: 1. Can the estradiol-loaded silicone rubber intrauterine stent system increase the endometrial thickness at 21+2 days after the procedure? 2. What adverse events or safety issues occur in participants when using this product? Researchers will compare the estradiol-loaded silicone rubber intrauterine stent system with a non-drug-loaded silicone intrauterine stent to determine whether the drug-eluting stent offers advantages in promoting endometrial repair. Participants will: 1. Undergo placement of either the estradiol-eluting stent or the non-drug stent immediately after artificial abortion, with the stent retained for 21+2 days 2. Attend scheduled follow-up visits at 21+2 days, after the first menstruation, and at 90 days post-procedure. 3. Undergo ultrasound examinations to measure endometrial thickness, and record vaginal bleeding duration, blood loss volume, time to first menstruation, and any adverse events
Interventions
DEVICEEstradiol-Loaded Silicone Rubber Intrauterine Stent System
After abortion, an estradiol-loaded silicone rubber intrauterine stent system was placed for 21+2 days, and oral anti-infective medication was administered for 3 days postoperatively.
DEVICENo-Drug-Loaded Silicone Rubber Intrauterine Stent System
After abortion, a no-drug-loaded silicone rubber intrauterine stent system was placed for 21+2 days, and oral anti-infective medication was administered for 3 days postoperatively.
Sponsors
Peking Union Medical College Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 40 Years
Healthy volunteers
No
Inclusion criteria
1. Female patients aged 18-40 years； 2. Menstrual cycle was 21-35 days within the six months before enrollment； 3. BMI between 18.5-28 kg/m²； 4. Voluntary termination of pregnancy, history of ≥2 abortions or missed abortion, and confirmed gestational age ≤10 weeks； 5. Willing to participate, able to attend regular follow-ups, and sign the informed consent form.
Exclusion criteria
1. Known allergy or contraindication to silicone rubber or estrogen； 2. History of hysteroscopically confirmed uterine adhesions or diagnosed thin endometrium； 3. Uterine malformation, uterine fibroids compressing the uterine cavity, or other causes of abnormal uterine cavity shape； 4. Participants requesting IUD placement, oral contraceptives, or subcutaneous implantation after surgery； 5. Patients with mental or cognitive impairment, unable to cooperate with the treatment process； 6. Patients considered by the investigator to have potential risks or factors making them unsuitable for inclusion.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Endometrial thickness | at 21 + 2 Days Postoperatively | Measured via transvaginal ultrasound (unit: mm). The measurement is defined as the maximum perpendicular distance between the interface of the myometrium and endometrium on the anterior and posterior walls of the uterine cavity, obtained from the largest sagittal section of the uterus. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Vaginal bleeding volume | 14 days post-surgery | Assessed by investigator-conducted follow-up interview at 14 days postoperatively. The postoperative vaginal bleeding volume is categorized as less, moderate, or more based on the subject's subjective perception, compared with her pre-operative menstrual flow volume. |
| Vaginal bleeding duration | 14 days post-surgery | Assess the duration of vaginal bleeding after induced abortion surgery, measured in hours/days (recorded from the end of surgery until bleeding stops). |
| Time to menstrual resumption after abortion | Followed up and recorded within 60 days after induced abortion surgery (if no menstruation occurs by day 60, it will be recorded as "no resumption within 60 days"). | Time interval from the date of induced abortion surgery to the first day of spontaneous vaginal bleeding that meets the patient's usual menstrual flow volume and duration. |
| Changes in menstrual blood volume at first menstrual period post-abortion | Assessed at the end of the first menstrual period after abortion, with follow-up and recording completed within 60 days post-abortion.If no menstruation occurs by day 60, it will be recorded as "no resumption within 60 days". | Compare the blood volume of the first menstrual period after abortion with the patient's pre-pregnancy usual menstrual blood volume (assessed via patient-reported sanitary product usage). |
Countries
China
Contacts
CONTACTXinyan Liu
Outcome results
None listed