Retained Products of ConceptionNCT04917016
B-HCG Levels in Women Diagnosed With Retained Products of Conception
An observational study of Retained Products of Conception, run by Assaf-Harofeh Medical Center at 1 site in Israel.
Trial summary
Retained Products of Conception (RPOC) is a condition where gestational tissue remains in the uterus after birth or after a surgical or medical abortion. This condition may cause significant bleeding, infection, and long-term intrauterine adhesions associated with fertility problems and pregnancy complications… Read more about this study
- Who is it for?
- Ages 18 to 45 years, women only
- Conditions the study is for
- Retained Products of Conception
- What is being tested?
- Plasma B-HCG levels
- How many people
- 200 participants
- Where
- 1 siteIsrael
- Study dates
- 1 Dec 2019to 28 Feb 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 45 years
- Women only
- No healthy volunteers
- Adult
Study population: Women >18 years admitted for hysteroscopy for RPOC removal following delivery of abortion.
Who may be able to join
- >18 years old
- Admitted for hysteroscopy for RPOC removal following delivery
- Admitted for hysteroscopy for RPOC removal following abortion.
Who cannot join
- Low suspicion of RPOC by clinical or ultrasound examination.
- No pathology specimen available.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: B-HCG Levels in Women Undergoing Hysteroscopy for Removal of Retained Products of Conception
Retained Products of Conception (RPOC) is a condition where gestational tissue remains in the uterus after birth or after a surgical or medical abortion. This condition may cause significant bleeding, infection, and long-term intrauterine adhesions associated with fertility problems and pregnancy complications (Asherman's syndrome). RPOC are diagnosed according to the clinical and ultrasound findings (such as an echogenic foci in the uterine cavity with Doppler blood flows). However, the diagnosis of RPOC by clinic and ultrasound characteristics is inaccurate and false positive results are reported in up to 40% of women undergoing a surgical procedure for RPOC removal (most often by hysterosocpy). However, surgery also carries a risk of complications and intrauterine infections. Therefore, the need arises for additional tools to improve the diagnosis available today in order to minimize the need for surgical procedures as much as possible.
The production and secretion of the B-HCG occurs in the placenta and begins after blastocyst implantation. The B-HCG levels increase in other placental pathologies such as gestational trophoblastic disease (GTD). Accordingly, the investigators hypothesized that in cases of placental remnants a secretion of B-HCG may be detected and quantified.
In this prospective, non-interventional study the investigators' aim is to examine whether B-HCG can be used as a marker for detecting placental remnants, compared to the currently accepted sonographic method. For this purpose, the investigators will examine the levels of B-HCG in participants undergoing hysteroscopy for removal of RPOC.
- Conditions
- Retained Products of Conception
- Being tested
- Plasma B-HCG levels
- Keywords
- Hysteroscopy, Ultrasound
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Plasma B-HCG levelsDiagnostic test
Blood sample
| Study group | Role | What they receive |
|---|---|---|
| Study group | Women undergoing hysteroscopy for removal of RPOC Receives: Diagnostic Test: Plasma B-HCG levels |
What is being measured
The primary outcome is the main question the study is designed to answer.
B-HCG levels
Plasma levels of B-HCG measured in mU/mL in women undergoing hysteroscopy for removal of RPOC
Measured: From randomization to the day of surgery, assessed up to 3 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Jun 2021
- Study start1 Dec 2019
- Primary completion28 Feb 2021
- Study completion28 Feb 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for Retained Products of ConceptionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 200 participants (actual)
Sponsor and investigators
- Lead sponsor
- Assaf-Harofeh Medical Center
- Sponsor type
- Other government
- Responsible party
- Principal investigator, Assaf Harofeh MC, Assaf-Harofeh Medical Center
- Investigators
- Noam Smorgick, MD Msc, Principal investigator, Assaf-Harofeh Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04917016
- Sponsor's protocol ID
- 0195-19-ASF
- Status last verified
- Jun 2021
- First submitted
- 13 Jan 2021
- Last updated
- 8 Jun 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Yu D, Wong YM, Cheong Y, Xia E, Li TC. Asherman syndrome--one century later. Fertil Steril. 2008 Apr;89(4):759-79. doi: 10.1016/j.fertnstert.2008.02.096.
PubMed 18406834Barel O, Krakov A, Pansky M, Vaknin Z, Halperin R, Smorgick N. Intrauterine adhesions after hysteroscopic treatment for retained products of conception: what are the risk factors? Fertil Steril. 2015 Mar;103(3):775-9. doi: 10.1016/j.fertnstert.2014.11.016. Epub 2014 Dec 17.
PubMed 25527235Smorgick N, Barel O, Fuchs N, Ben-Ami I, Pansky M, Vaknin Z. Hysteroscopic management of retained products of conception: meta-analysis and literature review. Eur J Obstet Gynecol Reprod Biol. 2014 Feb;173:19-22. doi: 10.1016/j.ejogrb.2013.11.020. Epub 2013 Dec 1.
PubMed 24332096Smorgick N, Krakov A, Maymon R, Betser M, Tovbin J, Pansky M. Postpartum Retained Products of Conception: A Novel Approach to Follow-Up and Early Diagnosis. Ultraschall Med. 2018 Dec;39(6):643-649. doi: 10.1055/s-0043-113817. Epub 2017 Sep 21.
PubMed 28934813van den Bosch T, Daemen A, Van Schoubroeck D, Pochet N, De Moor B, Timmerman D. Occurrence and outcome of residual trophoblastic tissue: a prospective study. J Ultrasound Med. 2008 Mar;27(3):357-61. doi: 10.7863/jum.2008.27.3.357.
PubMed 18314513
Study at a glance
From the registry record, last updated by the sponsor on 8 Jun 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- B-HCG Levels in Women Undergoing Hysteroscopy for Removal of Retained Products of Conception
- ClinicalTrials.gov ID
- NCT04917016
- Acronym / sponsor ID
- 0195-19-ASF
- Conditions
- Retained Products of Conception
- Keywords
- Hysteroscopy, Ultrasound
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 200 participants (actual)
- Lead sponsor
- Assaf-Harofeh Medical CenterOther government
- Study start
- 1 Dec 2019 (actual)
- Primary completion
- 28 Feb 2021 (actual)
- Study completion
- 28 Feb 2021 (actual)
- First posted
- 8 Jun 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Retained Products of Conception (RPOC) is a condition where gestational tissue remains in the uterus after birth or after a surgical or medical abortion. This condition may cause significant bleeding, infection, and long-term intrauterine adhesions associated with fertility problems and pregnancy complications (Asherman's syndrome). RPOC are diagnosed according to the clinical and ultrasound findings (such as an echogenic foci in the uterine cavity with Doppler blood flows). However, the diagnosis of RPOC by clinic and ultrasound characteristics is inaccurate and false positive results are reported in up to 40% of women undergoing a surgical procedure for RPOC removal (most often by hysterosocpy). However, surgery also carries a risk of complications and intrauterine infections. Therefore, the need arises for additional tools to improve the diagnosis available today in order to minimize the need for surgical procedures as much as possible.
The production and secretion of the B-HCG occurs in the placenta and begins after blastocyst implantation. The B-HCG levels increase in other placental pathologies such as gestational trophoblastic disease (GTD). Accordingly, the investigators hypothesized that in cases of placental remnants a secretion of B-HCG may be detected and quantified.
In this prospective, non-interventional study the investigators' aim is to examine whether B-HCG can be used as a marker for detecting placental remnants, compared to the currently accepted sonographic method. For this purpose, the investigators will examine the levels of B-HCG in participants undergoing hysteroscopy for removal of RPOC.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Study group | – | Diagnostic Test: Plasma B-HCG levelsWomen undergoing hysteroscopy for removal of RPOC |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- Women >18 years admitted for hysteroscopy for RPOC removal following delivery of abortion.
Key inclusion criteria (3 listed)
- >18 years old
- Admitted for hysteroscopy for RPOC removal following delivery
- Admitted for hysteroscopy for RPOC removal following abortion.
Key exclusion criteria (2 listed)
- Low suspicion of RPOC by clinical or ultrasound examination.
- No pathology specimen available.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Plasma B-HCG levelsBlood sample | Diagnostic test | Study group |
Primary outcome
B-HCG levels
Time frame: From randomization to the day of surgery, assessed up to 3 months
Plasma levels of B-HCG measured in mU/mL in women undergoing hysteroscopy for removal of RPOC
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Jun 2021.
- Results publication: PubMed 18406834Yu D, Wong YM, Cheong Y, Xia E, Li TC. Asherman syndrome--one century later. Fertil Steril. 2008 Apr;89(4):759-79. doi: 10.1016/j.fertnstert.2008.02.096.
- Results publication: PubMed 25527235Barel O, Krakov A, Pansky M, Vaknin Z, Halperin R, Smorgick N. Intrauterine adhesions after hysteroscopic treatment for retained products of conception: what are the risk factors? Fertil Steril. 2015 Mar;103(3):775-9. doi: 10.1016/j.fertnstert.2014.11.016. Epub 2014 Dec 17.
- Results publication: PubMed 24332096Smorgick N, Barel O, Fuchs N, Ben-Ami I, Pansky M, Vaknin Z. Hysteroscopic management of retained products of conception: meta-analysis and literature review. Eur J Obstet Gynecol Reprod Biol. 2014 Feb;173:19-22. doi: 10.1016/j.ejogrb.2013.11.020. Epub 2013 Dec 1.
- Results publication: PubMed 28934813Smorgick N, Krakov A, Maymon R, Betser M, Tovbin J, Pansky M. Postpartum Retained Products of Conception: A Novel Approach to Follow-Up and Early Diagnosis. Ultraschall Med. 2018 Dec;39(6):643-649. doi: 10.1055/s-0043-113817. Epub 2017 Sep 21.
- Results publication: PubMed 18314513van den Bosch T, Daemen A, Van Schoubroeck D, Pochet N, De Moor B, Timmerman D. Occurrence and outcome of residual trophoblastic tissue: a prospective study. J Ultrasound Med. 2008 Mar;27(3):357-61. doi: 10.7863/jum.2008.27.3.357.
- Individual participant dataSharing planned: Undecided
Related trials for Retained Products of Conception
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Noam Smorgick, MD Msc principal investigator
Assaf-Harofeh Medical Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Retained Products of Conception, run by Assaf-Harofeh Medical Center at 1 site in Israel.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 8 Jun 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Israel. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
B-HCG levels (time frame: From randomization to the day of surgery, assessed up to 3 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04917016, which also lists 5 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jun 2021; AzTrials last refreshed its copy on 8 Nov 2026.