Evidence map›Paper›PMID 34591251›Full record

ArticleJournal of nephrology2021

Pregnancy and delivery in women receiving maintenance hemodialysis in Japan: analysis of potential risk factors for neonatal and maternal complications.

Hiroko Hirano, Tomomi Ueda, Hirohiko Tani, Kenzo Kosaka, Eiji Nakatani, Philip Hawke, Kiyoshi Mori, Noriko Mori

Open access · hybridAbstract read
In one paragraph

Article in Journal of nephrology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 29% 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

4 citing papers in PubMed, 5 citations in OpenAlex.

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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 at 3 institutions in 1 country.

Hiroko HiranoDepartment of Nephrology, Shizuoka General Hospital, 4-27-1 Kita-ando, Aoi-ku, Shizuoka, 420-8527, Japan.
Tomomi UedaDepartment of Nephrology, Shizuoka General Hospital, 4-27-1 Kita-ando, Aoi-ku, Shizuoka, 420-8527, Japan.
Hirohiko TaniDepartment of Obstetrics and Gynecology, Shizuoka General Hospital, Shizuoka, Japan.
Kenzo KosakaDepartment of Obstetrics and Gynecology, Shizuoka General Hospital, Shizuoka, Japan.
Eiji NakataniGraduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan.
Philip HawkeLaboratory of Scientific English, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan.
Kiyoshi MoriDepartment of Nephrology, Shizuoka General Hospital, 4-27-1 Kita-ando, Aoi-ku, Shizuoka, 420-8527, Japan. kiyoshimori2001@gmail.com.ORCID http://orcid.org/0000-0002-7285-8351
Noriko MoriDepartment of Nephrology, Shizuoka General Hospital, 4-27-1 Kita-ando, Aoi-ku, Shizuoka, 420-8527, Japan. noriko-mori@i.shizuoka-pho.jp.
Shizuoka General Hospital · JPShizuoka University · JPUniversity of Shizuoka · JP

Funding

Japan Society for the Promotion of Science 19K08682
6 · The paper itself

Abstract

introductionAverage dialysis vintage in Japan is among the longest in the world, providing a unique opportunity to characterize pregnancy under conditions of long dialysis vintage. In 2017, we carried out a nationwide survey following up on a similar survey in 1996, in which we investigated the prevalence and outcomes of pregnancy in women undergoing dialysis and assessed risk factors associated with neonatal and maternal complications.

methodsThe target population was women aged 15-44 years undergoing maintenance dialysis between 2012 and 2016. The survey was conducted in 2693 dialysis units.

resultsA response was obtained from 951 dialysis units, yielding a target population of 1992 women of childbearing age receiving hemodialysis or peritoneal dialysis. Pregnancy occurred only among women receiving hemodialysis, with 25 pregnancies (1.26% in 5 years) being reported for 20 women. Detailed information about 19 pregnancies (mean age 34.6 ± 5.7 years at conception, mean dialysis vintage 8.4 ± 7.3 years) indicated 4 spontaneous abortions, 1 elective abortion, no neonatal deaths, and 14 surviving infants, including 5 full-term (≥ 37 weeks at birth), 2 late preterm (34-36), and 3 extremely preterm (< 28) cases. Neonatal complications occurred in the offspring of 3 mothers who had end-stage renal disease (ESRD) caused by primary glomerulonephritis and serum albumin levels (sAlb) ≤ 3.2 mg/dL in the first trimester. These mothers had started dialysis at 12, 17, and 30 years of age. ESRD caused by diabetic nephropathy or primary glomerulonephritis, age at conception ≥ 38 years, and sAlb ≤ 3.2 mg/dL were associated with maternal complications, although not significantly.

conclusionsIn this study, the pregnancy rate of Japanese women with ESRD was 0.25% per year. The study generates the hypothesis that ESRD caused by diabetic nephropathy and age at conception ≥ 38 years are potential risk factors for maternal complications but not for neonatal complications in dialysis patients, and that hypoalbuminemia is a potential risk factor for both kinds of complications.

Indexed as

Pregnancy ComplicationsPregnancy OutcomeAdultFemaleHumansJapanPregnancyRenal DialysisRisk FactorsComplicationDeliveryDialysisPregnancyPreterm

Identifiers

PMID34591251
PMCPMC8494660
OpenAlexW3203130420

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.