Evidence map›Paper›PMID 33314807›Full record

ArticleInvestigative and clinical urology2021

Extremely-slow, half-number shockwave lithotripsy for asymptomatic renal stones <20 mm.

Katsuhiro Ito, Toshifumi Takahashi, Toru Kanno, Takashi Okada, Yoshihito Higashi, Hitoshi Yamada

Abstract readComparative Study
In one paragraph

Article in Investigative and clinical 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
–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

2 citing papers in PubMed.

  1. Article
  2. Ultraslow versus slow-rate shockwave lithotripsy in the management of renal stone: A randomized controlled trial.Indian journal of urology : IJU : journal of the Urological Society of India
    Article
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.

Katsuhiro ItoDepartment of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan. itokatsu@kuhp.kyoto-u.ac.jp.ORCID 0000-0002-6322-9190
Toshifumi TakahashiDepartment of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan.ORCID 0000-0003-1979-8270
Toru KannoDepartment of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan.ORCID 0000-0001-9445-4035
Takashi OkadaDepartment of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan.ORCID 0000-0001-5498-6950
Yoshihito HigashiDepartment of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan.ORCID 0000-0002-9738-4244
Hitoshi YamadaDepartment of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan.ORCID 0000-0002-5016-8210

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare the treatment success rate and safety of reduced (30 shocks/min, 1,200 shocks/session) versus standard (60 shocks/min, 2,400 shocks/session) extracorporeal shockwave lithotripsy for the management of renal stones. MATERIALS AND

methodsWe retrospectively analyzed 404 patients who underwent extracorporeal shockwave lithotripsy for 5-20-mm renal stones between April 2011 and March 2019. Patients selected the reduced or standard protocol (group R and S) after explaining the potential benefits and disadvantages. The primary outcome was treatment success within 12 weeks, which was defined as no residual fragment or fragments <4 mm on ultrasonography and plain radiograph.

resultsIn total, 94 and 310 patients underwent shockwave lithotripsy with a reduced and standard protocol, respectively. The background characteristics of the participants did not significantly differ. The treatment success within 12 weeks was achieved in 78 (83.0%) patients in group R and 259 (83.5%) in group S (p=0.88). The median number of the session was 3 (interquartile range, 2-4) in both groups (p=0.53). The total complication rates were 5.4% in group R and 6.1% in group S. Three (1.0%) patients in group S experienced perirenal hematoma, which was conservatively treated. The reduced protocol was not associated with treatment success in the multivariate analysis adjusted for potential confounders (odds ratio, 0.91; 95% confidence interval, 0.46-1.80; p=0.78).

conclusionsThe new treatment amendment with a slower delivery rate successfully reduced the total number of shocks need to fragment renal stones <20 mm without compromising the stone-free rate.

Indexed as

AgedAsymptomatic DiseasesFemaleHematomaHumansKidney CalculiLithotripsyMaleMiddle AgedRetrospective StudiesTreatment OutcomeExtracorporeal shockwave therapyKidney calculiLithotripsyNephrolithiasisUrolithiasis

Identifiers

PMID33314807
PMCPMC7801166

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