Evidence map›Paper›PMID 33976918›Full record

ArticleCentral European journal of urology2021

Does relative renal function improve after intervention for chronic ureteric obstruction?

Zhi-Yang Low, Siân E Allen, Vimoshan Arumuham, Laura May Davis, Clare Allen, Jamshed Bomanji, R Daron Smith

Open access · greenAbstract read
In one paragraph

Article in Central European journal of urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Observational
  2. 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

7 authors at 2 institutions in 1 country.

Zhi-Yang LowInstitute of Urology, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
Siân E AllenInstitute of Urology, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
Vimoshan ArumuhamInstitute of Urology, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
Laura May DavisInstitute of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
Clare AllenDepartment of Radiology, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
Jamshed BomanjiInstitute of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
R Daron SmithInstitute of Urology, University College London Hospitals NHS Foundation Trust, London, United Kingdom.
University College London · GBUniversity College London Hospitals NHS Foundation Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionUnilateral renal function often deteriorates with chronic ureteric obstruction. Our objectives were to determine the change in relative renal function (RRF) by MAG3 renography after intervention for ureteric obstruction, and to identify clinical/epidemiological factors which influence long-term outcomes. MATERIAL AND

methodsWe identified 228 patients from 2006 to 2017 who underwent MAG3 renography before and after intervention for unilateral ureteric obstruction. Patients were grouped into categories preoperatively - with normal RRF (43-57%) through mild (29-42%), moderate (15-28%) and severe (<15%) impairment of RRF. Patient demographics, types of obstructive uropathy and intervention employed were analysed. Each group was assessed for the absolute change in RRF and change in RRF category postoperatively.

resultsThe mean patient age was 50.4 years (SD 16.7), and 62.3% were female. Overall, the mean pre- and post-intervention RRF of the obstructed kidney did not differ significantly (32.30% vs. 32.20%, P = 0.835). Most patients remained in their preoperative RRF group: 85.9% of normal, 67.4% of mild, 64.4% of moderate and 73.3% of patients with severe RRF impairment did not change category.Patients with mildly impaired preoperative RRF showed a significant worsening postoperatively (36.37% vs. 34.58%, P = 0.024). The other three groups showed no significant change in RRF following intervention.Multivariate logistic regression analysis showed no statistically significant association between type of intervention, age, gender or diagnosis and improvement in postoperative RRF category.

conclusionsOur results show that RRF does not improve significantly after intervention for ureteric obstruction. The aim should therefore be to maintain existing renal function and relieve symptoms.

Indexed as

improvementMAG3obstructionrelativerenal function

Identifiers

PMID33976918
PMCPMC8097660
OpenAlexW3159982123

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.