Evidence map›Paper›PMID 41689253›Full record

ArticleThe journal of obstetrics and gynaecology research2026

Interval Vaginal Delivery of Term Twins From Bilateral Horns of a Uterus Didelphys: Insight Into Labor Initiation and Progression.

Daiki Hiratsuka, Takayuki Iriyama, Seisuke Sayama, Keiichi Kumasawa, Miyuki Harada, Yasushi Hirota

Abstract readCase Reports
In one paragraph

Article in The journal of obstetrics and gynaecology research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

6 authors.

Daiki HiratsukaDepartment of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0001-7128-2859
Takayuki IriyamaDepartment of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.ORCID https://orcid.org/0000-0001-7970-6695
Seisuke SayamaDepartment of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Keiichi KumasawaDepartment of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Miyuki HaradaDepartment of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Yasushi HirotaDepartment of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Uterus didelphys, characterized by two separate uterine cavities and cervices, is associated with increased obstetric complications. Twin pregnancy with one fetus in each horn is exceptionally rare, often managed by cesarean or resulting in preterm birth. We report the first known case of term vaginal deliveries from both horns, occurring 6 days apart. A 28-year-old woman with uterus didelphys spontaneously conceived twins, with one fetus in each horn. At 37 + 4 weeks of gestation, labor began spontaneously in the left uterus. The cardiotocogram initially showed asynchronous contractions between the horns during the latent phase, becoming synchronous in the active phase. The first twin was delivered via forceps due to non-reassuring fetal status. The right uterus showed weak contractions but did not progress to labor. Six days later, labor was induced, and the second twin was also delivered via forceps. This case offers rare clinical insight into labor initiation and inter-horn coordination.

Indexed as

Delivery, ObstetricLabor, ObstetricPregnancy, TwinUterine DidelphysAdultFemaleHumansPregnancylaborobstetrical forcepstwinsuterine contractionuterus didelphys

Identifiers

PMID41689253
PMCPMC12905468

What OpenQuestion holds

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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.