Ultrasound-guided manual vacuum aspiration for managing first trimester miscarriage

Ultrasound-guided Manual Vacuum Aspiration (USG-MVA)

Chinese University of Hong Kong · NCT05413525

This study looks at how well ultrasound-guided manual vacuum aspiration works for women experiencing first trimester miscarriages and whether it can help with further testing.

Quick facts

Study typeObservational
Enrollment200 (estimated)
Ages18 Years and up
SexFemale
SponsorChinese University of Hong Kong (other)
Locations2 sites (Hong Kong, Shatin and 1 other locations)
Trial IDNCT05413525 on ClinicalTrials.gov

What this trial studies

This observational study reviews the experience of ultrasound-guided manual vacuum aspiration (USG-MVA) in Hong Kong, focusing on its effectiveness in managing first trimester miscarriages. The study evaluates how USG-MVA can facilitate cytological analysis, which is often challenging after medical evacuation. The procedure uses a hand-held syringe to create suction and can be performed in an outpatient setting with minimal sedation. The investigators have previously established the feasibility and acceptability of this method, having conducted over 200 cases since its introduction in 2015.

Who should consider this trial

Good fit: Ideal candidates include women aged 18 and above who are experiencing a first trimester miscarriage and are suitable for USG-MVA.

Not a fit: Patients with cervical stenosis, significant uterine abnormalities, or those unable to tolerate pelvic examinations may not benefit from this procedure.

Why it matters

Potential benefit: If successful, this approach could provide a safer and more effective option for women experiencing first trimester miscarriages.

How similar studies have performed: Previous studies have shown that ultrasound-guided manual vacuum aspiration is an effective alternative to traditional surgical methods, indicating potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Women 18 years old or above
* Women with miscarriage who are suitable candidates for USG-MVA
* first trimester delayed miscarriage ≤ 12 weeks of gestation
* incomplete miscarriage with POG ≤ 5cm
* hemodynamically stable
* tolerates well with speculum examination

Exclusion Criteria:

* Women who are not feasible for the USG-MVA
* cervical stenosis
* fibroid uterus ≥12 weeks in size
* known uterine malformation
* bleeding disorder
* suspicion of active infection
* inability to tolerate pelvic examination
* History of allergy to misprostol or same group of medications

Where this trial is running

Hong Kong, Shatin and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Ultrasound-guided Manual Vacuum Aspiration, First Trimester Spontaneous Abortion, USG-MVA, Ultrasound-guided manual vacuum aspiration, Miscarriage, Cytological analysis, Manual vacuum aspiration

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.