Evidence map›Paper›PMID 32204702›Full record

Observational studyBMC pregnancy and childbirth2020

Reasons for previous Cesarean deliveries impact a woman's independent decision of delivery mode and the success of trial of labor after Cesarean.

Kaname Uno, Michinori Mayama, Masato Yoshihara, Takehiko Takeda, Sho Tano, Teppei Suzuki, Yasuyuki Kishigami, Hidenori Oguchi

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC pregnancy and childbirth, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 9% 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, 2 syntheses or guidelines pooled it, 32 citations in OpenAlex.

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  5. Caesarean section and respiratory system disorders in newborns.European journal of obstetrics & gynecology and reproductive biology: X · 2024
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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 1 institution in 1 country.

Kaname UnoDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan. kaitokukanamen@gmail.com.
Michinori MayamaDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Masato YoshiharaDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Takehiko TakedaDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Sho TanoDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Teppei SuzukiDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Yasuyuki KishigamiDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Hidenori OguchiDepartment of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital, 1-1, Heiwa-cho, Toyota, Aichi, Japan.
Toyota Memorial Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCesarean delivery rates are increasing globally with almost half of them occurring due to a previous Cesarean delivery. A trial of labor after Cesarean (TOLAC) is considered a safe procedure, but most eligible women instead undergo Cesarean before 39 weeks of gestation. Lack of education about TOLAC is often associated with increased repeat Cesarean. To reveal the safety and feasibility of TOLAC, we conducted this observational, prospective study with women's independent decisions. We aimed to clarify the relationship between their chosen mode of delivery and the reason for their previous Cesarean. Additionally, we have tried to identify maternal and obstetric factors associated with failed TOLAC to improve its success rate.

methodsThis was a prospective, observational study of 1086 pregnant women with at least one previous Cesarean delivery. Of these, 735 women met our TOLAC criteria (Table 1), and then, could choose TOLAC or repeat Cesarean after receiving detailed explanations regarding the risks and benefits of both procedures. The primary outcomes were the number of successful TOLAC procedures and 5-min Apgar scores < 7 for the trial of labor after Cesarean group and elective Cesarean group. We collected the maternal and neonatal data including the reasons of previous Cesarean.

resultsIn total, 64.1% of women chose TOLAC. The success rate was 91.3%. The uterine rupture rate was 0.6%. There were no significant differences in the rate of Apgar scores at 5 min < 7 between both groups. Histories of experience of labor in previous Cesarean delivery were observed in 30 and 50% of women who chose TOLAC and repeat Cesarean, respectively (p < 0.05). Factors related to failed TOLAC included ≥40 weeks of gestation (odds: 5.47, 95% CI: 2.55-11.70) and prelabor rupture of membranes (PROM) (odds: 4.47, 95% CI: 2.07-9.63).

conclusionsTOLAC is a favorable delivery option for both mothers and neonates when women meet criteria and choose after receiving detailed explanations. Women who experience PROM or ≥ 40 weeks of gestation, their modes of delivery should be reconsulted.

Indexed as

Decision MakingTrial of LaborAdultCesarean Section, RepeatFemaleHumansJapanPregnancyPregnant PeopleProspective StudiesVaginal Birth after CesareanElective repeat cesarean delivery (ERCD)Mode of deliveryPrelabor rupture of membranes (PROM)Trial of labor after cesarean (TOLAC)Uterine ruptureVaginal birth after cesarean (VBAC)women’s independent decision

Identifiers

PMID32204702
PMCPMC7092517
OpenAlexW3012944350

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.