Evidence map›Paper›PMID 35057818›Full record

ArticleReproductive health2022

Is there an optimal inter-delivery interval in women who underwent trial of labor after cesarean delivery (TOLAC)?

Jiaming Rao, Dazhi Fan, Huiting Ma, Dongxin Lin, Huishan Zhang, Zixing Zhou, Pengsheng Li, Gengdong Chen, Demei Lu, Yan Liu and 6 more

Abstract readMulticenter Study
In one paragraph

Article in Reproductive health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 2 pooled it
–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

7 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. FIGO good practice recommendations for vaginal birth after cesarean section.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2025
    Guideline
  2. Pooled it
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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

16 authors.

Jiaming RaoFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Dazhi FanFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Huiting MaFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Dongxin LinFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Huishan ZhangFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Zixing ZhouFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Pengsheng LiFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Gengdong ChenFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Demei LuDepartment of Obstetrics, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Yan LiuDepartment of Obstetrics, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China.
Zhaoxia WuDepartment of Obstetrics, Nanhai Maternity & Child Healthcare Hospital, Foshan, 528200, Guangdong, China.
Jieyun HeDepartment of Obstetrics, Shunde Maternity & Child Healthcare Hospital, Foshan, 528300, Guangdong, China.
Xinjuan LiuDepartment of Obstetrics, The People's Hospital of Gaoming, Foshan, 528500, Guangdong, China.
BingJie PengDepartment of Obstetrics, Sanshui Maternity & Child Healthcare Hospital, Foshan, 528100, Guangdong, China.
Xiaoling GuoDepartment of Obstetrics, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China. fsguoxl@163.com.
Zhengping LiuFoshan Fetal Medicine Institute, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Renminxi Road 11, Foshan, 528000, Guangdong, China. liuzphlk81@outlook.com.ORCID http://orcid.org/0000-0002-4964-0258

Funding

the foshan medical science and technology research project 2018AB000261the foshan science and technology innovation project 2017AG100261
6 · The paper itself

Abstract

backgroundInter-delivery interval (IDI) has been proven to be a factor associated with adverse maternal and neonatal outcomes. However, the optimal IDI in trial of labor after cesarean delivery (TOLAC) remains unclear. We aimed to investigate the association between IDI and major maternal and neonatal outcomes in women who underwent TOLAC.

methodsA multicenter, retrospective cohort study including five hospitals was conducted between January 2018 and December 2019 in Foshan, China. This study included 1080 pregnant women with one or two cesarean deliveries who attempted a TOLAC. Data on maternal and neonatal outcomes were collected from the electronic record system. Maternal and neonatal outcomes in different groups of IDI were compared by univariate and multivariable analyses.

resultsA short IDI of < 24 months did not show a statistically significant association with uterine rupture in the univariate analysis (P = 0.668). In multivariable analysis, the incidences of postpartum hemorrhage (OR 19.6, 95% CI:4.4-90.9, P < 0.05), preterm birth (OR 5.5, 95% CI:1.5-21.3, P < 0.05), and low birth weight (OR 3.5, 95% CI:1.2-10.3, P < 0.05) were significantly increased in women with an IDI of < 24 months than in those with a normal interval (24-59 months). Infection morbidity (OR 1.8, 95% CI:1.4-7.9, P < 0.05), transfusion (OR 7.4, 95% CI:1.4-40.0, P < 0.05), and neonatal unit admission (OR 2.6, 95% CI:1.4-5.0, P < 0.05) were significantly increased in women with an IDI of 120 months or more than in those with a normal interval. Postpartum hemorrhage (P = 0.062) had a trend similar to that of a significant IDI of 120 months or more. We found no statistically significant difference in maternal and neonatal outcomes between 24-59 months and 60-119 months.

conclusionsAn IDI of less than 24 months or 120 months or more increased the risk of major maternal and neonatal outcomes. We recommend that the optimal interval for women who underwent TOLAC should be 24 to 119 months.

Indexed as

Premature BirthVaginal Birth after CesareanCesarean SectionFemaleHumansInfant, NewbornPregnancyRetrospective StudiesTrial of LaborBirth spacingInter-delivery intervalMaternal and neonatal outcomesTrial of labor after cesarean deliveryUterine rupture

Identifiers

PMID35057818
PMCPMC8772215

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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.