Evidence map›Paper›PMID 41991267›Full record

ArticleBMJ open2026

Heart rate variability as a biomarker for autonomic recovery and maternal wellbeing following caesarean delivery: a scoping review protocol.

Yi Zhang, Libin Deng, Yao Xiong, Qingjun Zeng, Haishan Cui, Shuang Guo

Abstract read
In one paragraph

Article in BMJ open, 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. Review
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.

Yi ZhangDepartment of Anesthesiology, Wanzhou District Maternal and Child Health Hospital, Wanzhou, Chongqing, China joyfairy00@outlook.com.ORCID http://orcid.org/0009-0009-1853-9358
Libin DengDepartment of Anesthesiology, Chongqing Liangjiang New Area Traditional Chinese Medicine Hospital, Chongqing, China.
Yao XiongDepartment of Anesthesiology, Wuxi County Maternal and Child Health Hospital, Wuxi, Chongqing, China.
Qingjun ZengDepartment of Anesthesiology, Wanzhou District Maternal and Child Health Hospital, Wanzhou, Chongqing, China.
Haishan CuiDepartment of Anesthesiology, Wanzhou District Maternal and Child Health Hospital, Wanzhou, Chongqing, China.
Shuang GuoDepartment of Anesthesiology, Wanzhou District Maternal and Child Health Hospital, Wanzhou, Chongqing, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionCaesarean delivery accounts for more than 21% of all births worldwide, with rates exceeding 30% in several countries, yet objective physiological markers for monitoring postoperative maternal recovery remain scarce. Heart rate variability (HRV), a non-invasive index of autonomic nervous system integrity, has demonstrated prognostic value in general surgical populations. This scoping review will map the extent, range and nature of evidence on HRV monitoring in caesarean populations within a recovery-assessment framework. METHODS AND ANALYSIS: The review follows a Population-Concept-Context framework. The primary population comprises women undergoing elective caesarean delivery, with emergency procedures analysed as a distinct subgroup. The concept covers any validated measurement of HRV parameters (time-domain, frequency-domain and non-linear indices). The context spans the perioperative-to-postpartum continuum, from preoperative baseline through 6 weeks after delivery. Adhering to the Joanna Briggs Institute methodology, we will employ a three-step search strategy across PubMed, Embase, CINAHL, Cochrane Central Register of Controlled Trials and Web of Science. Two independent reviewers will screen records and extract data. Findings will be synthesised narratively and presented via temporal evidence mapping, an evidence gap map, and structured summary tables. ETHICS AND DISSEMINATION: Formal ethics approval is not required because this review exclusively analyses published data. We will disseminate our findings through publication in a peer-reviewed journal and presentations at relevant academic conferences.

Indexed as

Autonomic Nervous SystemCesarean SectionHeart RateMaternal HealthBiomarkersFemaleHumansPregnancyResearch DesignScoping Reviews as TopicBiomarkersCesarean SectionMothersPostpartum Period

Identifiers

PMID41991267
PMCPMC13110646

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.