Clinical trial NCT04917016: B-HCG Levels in Women Diagnosed With Retained Products of Conception
Official title: B-HCG Levels in Women Undergoing Hysteroscopy for Removal of Retained Products of Conception
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Retained Products of Conception
Keywords: Hysteroscopy
Ultrasound
Lead sponsor: Assaf-Harofeh Medical Center
Sponsor class: OTHER_GOV
First posted: 2021-06-08
Enrollment: 200
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Women \>18 years admitted for hysteroscopy for RPOC removal following delivery of abortion.

Brief 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 (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.


Eligibility criteria: Inclusion Criteria:

* \>18 years old
* Admitted for hysteroscopy for RPOC removal following delivery
* Admitted for hysteroscopy for RPOC removal following abortion.

Exclusion Criteria:

* Low suspicion of RPOC by clinical or ultrasound examination.
* No pathology specimen available.

Primary outcomes:
measure: B-HCG levels
timeFrame: From randomization to the day of surgery, assessed up to 3 months
Secondary outcomes:
Other outcomes:
Locations:
city: Be'er Ya'aqov
country: Israel
facility: Shamir Medical Center
Study officials:
affiliation: Assaf-Harofeh Medical Center
name: Noam Smorgick, MD Msc
role: PRINCIPAL_INVESTIGATOR
References:
citation: 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.
citation: Barel 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.
citation: Smorgick 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.
citation: Smorgick 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.
citation: van 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.