Evidence map›Paper›PMID 41646159›Full record

ArticleClinical case reports2026

Hypercoiling and Single Umbilical Artery Associated With Fetal Placental Malperfusion and Growth Restriction: A Case Report.

Masaya Tanimura, Tomo Yamagata, Moyu Matsui, Yusuke Yamaoka, Kohei Ida, Shohei Nakamura, Miyu Tanaka, Motonori Matsubara

Abstract read
In one paragraph

Article in Clinical case reports, 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

8 authors.

Masaya TanimuraDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.ORCID https://orcid.org/0009-0005-7239-5552
Tomo YamagataDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.ORCID https://orcid.org/0009-0008-3287-8092
Moyu MatsuiDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.
Yusuke YamaokaDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.
Kohei IdaDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.ORCID https://orcid.org/0009-0005-7909-3143
Shohei NakamuraDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.
Miyu TanakaDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.ORCID https://orcid.org/0000-0002-6261-2219
Motonori MatsubaraDepartment of Obstetrics and Gynecology Toyooka Hospital Toyooka Hyogo Japan.ORCID https://orcid.org/0009-0006-1747-2401

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypercoiling of the umbilical cord can lead to fetal growth restriction and stillbirth because the cord is vulnerable to blood flow disturbances caused by external forces. A single umbilical artery (SUA) is a relatively common abnormality; however, isolated SUA is associated with fetal growth restriction and stillbirth. We report a case of fetal growth restriction with both SUA and hypercoiling. A 27-year-old primigravida was evaluated at 37 weeks of gestation. Prenatal ultrasonography revealed a small-for-gestational-age fetus with a single umbilical artery and a hypercoiled umbilical cord. Continuous fetal monitoring was initiated upon admission. Cardiotocography demonstrated recurrent prolonged decelerations, necessitating an emergency cesarean section. Placental histopathology revealed fetal vascular malperfusion with hyalinized avascular villi and thrombotic occlusion of one umbilical artery, indicating disturbed fetoplacental circulation likely related to SUA and hypercoiling. The coexistence of hypercoiling and a single umbilical artery was associated with the risk of fetal vascular malperfusion and growth restriction. Careful antenatal surveillance and timely delivery are essential to prevent adverse perinatal outcomes in multiple umbilical cord anomalies.

Indexed as

fetal growth restrictionhypercoilingsingle umbilical arterystillbirth

Identifiers

PMID41646159
PMCPMC12868927

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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.