Evidence map›Paper›PMID 32086987›Full record

Observational studyBJOG : an international journal of obstetrics and gynaecology2020

Conservative surgery for ovarian torsion in young women: perioperative complications and national trends.

R S Mandelbaum, M B Smith, C J Violette, S Matsuzaki, K Matsushima, M Klar, L D Roman, R J Paulson, K Matsuo

Open access · greenAbstract readObservational Study
In one paragraph

Observational study in BJOG : an international journal of obstetrics and gynaecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
6.0field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Ultrasound-guided cyst aspiration for management of acute adnexal torsion.Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology · 2025
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Observational
  12. Article
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

R S MandelbaumDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
M B SmithDivision of Reproductive, Endocrinology, and Infertility, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
C J VioletteDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
S MatsuzakiDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
K MatsushimaDepartment of Surgery, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, USA.
M KlarDepartment of Obstetrics and Gynecology, University of Freiburg, Freiburg, Germany.
L D RomanDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
R J PaulsonDivision of Reproductive, Endocrinology, and Infertility, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
K MatsuoDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.ORCID https://orcid.org/0000-0002-6232-8701
University of Southern California · USUniversity of Freiburg · DE

Funding

USC/NORRIS COMPREHENSIVE CANCER CENTER (CORE) SUPPORTP30CA014089 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI MYLES G COCKBURN · 1985 to 2026
$181.4M
Ensign Endowment for Gynecologic Cancer ResearchNCI NIH HHS P30 CA014089
6 · The paper itself

Abstract

objectiveTo analyse populational trends and perioperative complications following conservative surgery versus oophorectomy in women <50 years of age with ovarian torsion.

designPopulation-based retrospective observational study.

settingNationwide Inpatient Sample in the USA (2001-2015). POPULATION: In all, 89 177 ovarian torsions including 20 597 (23.1%) conservative surgeries and 68 580 (76.9%) oophorectomies.

methods(1) Trend analysis to assess utilisation of conservative surgery over time, (2) multivariable binary logistic regression to identify independent factors associated with conservative surgery and (3) inverse probability of treatment weighting with a generalised estimating equation to analyze perioperative complications.

main outcome measuresTrends, characteristics and complications related to conservative surgery.

resultsPerformance of conservative surgery increased from 18.9 to 25.1% between 2001 and 2015 (32.8% relative increase, P = 0.001) but decreased steadily after age 15, and sharply declined after age 35 (P < 0.001). On multivariable analysis, younger age exhibited the largest effect size for conservative surgery among the independent factors (adjusted odds ratios 3.39-7.96, P < 0.001). In the weighted model, conservative surgery was associated with an approximately 30% decreased risk of perioperative complications overall (10.0% versus 13.6%, odds ratio 0.73, 95% confidence interval 0.62-0.85, P < 0.001) and was not associated with venous thromboembolism (0.2 versus 0.3%, P = 0.457) or sepsis (0.4 versus 0.3%, P = 0.638).

conclusionThere has been an increasing utilisation of conservative surgery for ovarian torsion in the USA in recent years. Our study suggests that conservative surgery for ovarian torsion may not be associated with increased perioperative complications. TWEETABLE ABSTRACT: Conservative surgery for ovarian torsion may not be associated with increased perioperative complications.

Indexed as

Conservative TreatmentOvariectomyAdnexal DiseasesAdolescentAdultFemaleFertility PreservationHumansIntraoperative ComplicationsMiddle AgedPractice Patterns, Physicians'Propensity ScoreRetrospective StudiesTorsion AbnormalityTreatment OutcomeUnited StatesConservative surgeryfertility preservationovarian conservationovarian torsion

Identifiers

PMID32086987
PMCPMC7772940
OpenAlexW3008803569

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.