Evidence map›Paper›PMID 32770255›Full record

ArticleUrolithiasis2020

Oral chemolysis is an effective, non-invasive therapy for urinary stones suspected of uric acid content.

Arman Tsaturyan, Elizaveta Bokova, Piet Bosshard, Olivier Bonny, Daniel G Fuster, Beat Roth

Abstract read
In one paragraph

Article in Urolithiasis, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

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  10. Medical treatment of uric acid kidney stones.Canadian Urological Association journal = Journal de l'Association des urologues du Canada · 2024
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  12. Review
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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

6 authors.

Arman TsaturyanDepartment of Urology, Inselspital, University of Bern, Bern, Switzerland.
Elizaveta BokovaDepartment of General Medicine, First Moscow State Medical University after I.M. Sechenov, Moscow, Russia.
Piet BosshardDepartment of Urology, Inselspital, University of Bern, Bern, Switzerland.
Olivier BonnyService of Nephrology, CHUV, University of Lausanne, Lausanne, Switzerland.
Daniel G FusterDepartment of Nephrology and Hypertension, Inselspital, University of Bern, Bern, Switzerland.
Beat RothDepartment of Urology, Inselspital, University of Bern, Bern, Switzerland. beat.roth@chuv.ch.ORCID http://orcid.org/0000-0002-7369-650X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite the possible benefit from avoiding stone surgery with all its possible complications, oral chemolysis is rarely performed in patients with urinary stones suspected of uric acid content. Among the reasons for its limited use is the sparse and low-quality data on its efficacy and the lack of reliable factors predicting its outcome. We thus performed a retrospective single-center cohort study of 216 patients (median patient age 63 years) with 272 renal (48%) and/or ureteral (52%) stones treated with oral chemolysis from 01/2010 to 12/2019. Patients with low urine pH (< 6), low stone density upon non-contrast enhanced computed tomography (NCCT), radiolucent urinary stones on plain radiography, and/or a history of uric acid urolithiasis were included. Potassium citrate and/or sodium/magnesium bicarbonate were used for alkalization (target urine pH 6.5-7.2). Median stone size was 9 mm, median stone density 430 Hounsfield Units. Patients with ureteral stones < 6 mm were excluded since stones this small are very likely to pass spontaneously. The stone-free status of each patient was evaluated after 3 months using NCCT. Oral chemolysis was effective with a complete and partial response rate of stones at 3 months of 61% and 14%, respectively; 25% of stones could not be dissolved. Lower stone density (OR = 0.997 [CI 0.994-0.999]; p = 0.008) and smaller stone size (OR = 0.959 [CI 0.924-0.995]; p = 0.025) significantly increased the success rate of oral chemolysis in multivariate logistic regression analysis. More precise stone diagnostics to exclude non-uric-acid stones could further improve outcome.

Indexed as

AgedBicarbonatesCohort StudiesFemaleHumansKidney CalculiMaleMiddle AgedPotassium CitrateRetrospective StudiesUreteral CalculiUric AcidBicarbonatesPotassium CitrateUric AcidNephrolithiasisOral chemolysisUric acidUrine alkalizationUrolithiasis

Identifiers

PMID32770255
PMCPMC7666279

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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.