Evidence map›Paper›PMID 34355340›Full record

SynthesisObesity surgery2021

Improvement of Renal Function After Bariatric Surgery: a Systematic Review and Meta-analysis.

Hongyan Huang, Jun Lu, Xiaojiang Dai, Zhixin Li, Liyong Zhu, Shaihong Zhu, Liangping Wu

Erratum issued Registry-linked trialAbstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Obesity surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT06697743 (Post Bariatric Surgery Acute Kidney Injury), which is not on this map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 pooled it
4.4field-weighted citation impact, top 5% 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.

NCT06697743 not yet recruitingnot on this mapstarted 2024, after this paper: background citation

Post Bariatric Surgery Acute Kidney Injury: Incidence and Risk Factors

TypeobservationalSponsorGeorgina Tharwat AbdelmasihRan2024 to 2027Enrolled30ConditionsBariatric Surgery, Acute Kidney Injury
3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 3 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Obesity-Related Kidney Disease: A Growing Threat to Renal Health.International journal of molecular sciences · 2025
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 1 country.

Hongyan HuangSurgical Center for Obesity and Diabetes, Jinshazhou Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510515, China.
Jun LuSchool of Medicine, Hunan Normal University, Changsha, 410013, China.
Xiaojiang DaiSurgical Center for Obesity and Diabetes, Jinshazhou Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510515, China.
Zhixin LiClinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, 18 Grade, Changsha, 410013, China.
Liyong ZhuDepartment of General Surgery, Third Xiangya Hospital, Central South University, Changsha, 410013, China.
Shaihong ZhuDepartment of General Surgery, Third Xiangya Hospital, Central South University, Changsha, 410013, China.
Liangping WuSurgical Center for Obesity and Diabetes, Jinshazhou Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510515, China. drwulp@163.com.
Guangzhou University of Chinese Medicine · CNThird Xiangya Hospital · CNCentral South University · CNGuangzhou Medical University · CNHunan Normal University · CN

Funding

the Science and Technology Program of Guangzhou, China Grant No. 202002020069
6 · The paper itself

Abstract

BACKGROUND/

objectiveThe effect of bariatric surgery in renal function varies and the postoperative benefit time point remains unclear. We aim to assess the changes of renal function after bariatric surgery (BS) in different postoperative periods and subgroups.

methodsWe searched the databases of PubMed and Cochrane from inception to December 14, 2020. Articles included in the study were drawn from all recipients of BS that provided assessments of renal function pre and post-surgery. Meta-analysis was performed to compare glomerular filtration rate (GFR), serum creatinine, albumin-to-creatinine ratio (ACR), and albuminuria before and after BS.

resultsThe study included 49 articles involving 8515 patients. Compared with pre-operative renal function, the overall analysis showed that bariatric surgery significantly reduced serum creatinine levels, ACR, and albuminuria. There was significant increase of GFR in the CKD subgroup, yet a noticeable decrease in the hyperfiltration subgroup. The most significant improvement in GFR was seen 6-12 months after BS, while ACR dropped most dramatically 12-24 months after BS.

conclusionsBariatric surgery can improve renal function in obese patients with kidney dysfunction, especially 1 year after surgery.

Indexed as

Bariatric SurgeryObesity, MorbidRenal Insufficiency, ChronicGlomerular Filtration RateHumansKidneyBariatric surgeryMeta-analysisObesityRenal function

Identifiers

PMID34355340
OpenAlexW3188330800

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.