Evidence map›Paper›PMID 40616669›Full record

Trial reportWorld journal of urology2025

Efficacy and safety of tip-bendable suction ureteral access sheath-assisted flexible ureteroscopic lithotripsy compared with mini-percutaneous nephrolithotomy for the management of 1-3 cm simple lower calyceal calculi: a prospective randomized controlled trial.

Yue Chen, Xiaojian Cui, Zhongsheng Peng, Siyuan Wang, Haiwen Zhou, Yuanjiong Qi, Shiyong Qi

Abstract readRandomized Controlled TrialComparative Study
PubMed Publisher
In one paragraph

Trial report in World journal of urology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 2 pooled it
–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

5 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. 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

7 authors.

Yue Chen *Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
Xiaojian Cui *Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
Zhongsheng Peng *Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
Siyuan WangDepartment of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
Haiwen ZhouDepartment of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China.
Yuanjiong QiDepartment of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China. qiyuanjiong@163.com.
Shiyong QiDepartment of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China. yongshiqi@126.com.

Funding

Education Commission Research Project of Tianjin 2023ZD008National Natural Science Foundation of China 82070725Science and Technology Project of Tianjin 23JCZDJC00650
6 · The paper itself

Abstract

objectiveTo assess the efficacy and safety of flexible ureteroscopic lithotripsy (f-URL) assisted by the tip-bendable suction ureteral access sheath (SUAS) and mini-percutaneous nephrolithotomy (mPCNL) for the treatment of simple lower calyx renal calculi.

methodsA prospective randomized controlled trial was conducted on 102 patients with simple lower calyx renal calculi (with a diameter of 1 ~ 3 cm) admitted to the Second Hospital of Tianjin Medical University from December 2023 to February 2025. The patients were randomly assigned to the SUAS f-URL group (n = 49) and the mPCNL group (n = 53). The primary endpoint of the study was the immediate stone-free rate (SFR), while the secondary endpoints included operative time, anesthesia time, visual analogue scale (VAS) pain score, estimated blood loss, complication rate, length of hospital stay, hospitalization cost, and the SFR at 30 days postoperatively.

resultsThe two groups had comparable baseline characteristics. The SUAS f-URL group demonstrated a similar immediate SFR compared to the mPCNL group (67.35% vs. 66.04%, p = 0.889). Compared to the mPCNL group, the SUAS f-URL group had a shorter anesthesia time (78.08 ± 29.79 vs. 94.62 ± 34.22 min, p = 0.011), a shorter postoperative hospital stay (3.00 [1.50, 3.00] vs. 3.00 [2.00, 5.50] days, p = 0.003), and lower overall costs (3171.21 ± 373.34 vs. 5056.69 ± 358.97 USD, p < 0.001). There were no statistically significant differences between the two groups in terms of postoperative complications, estimated blood loss, pain scores, or SFR at 30 days postoperatively.

conclusionCompared to mPCNL, SUAS f-URL achieved a similar SFR while offering advantages such as less anesthesia time, shorter hospitalization, and lower hospitalization costs. Moreover, it did not increase the incidence of perioperative complications such as infection and blood loss. Therefore, SUAS f-URL would be a viable alternative supported by preliminary evidence for the management of 10-30 mm simple lower calyceal renal calculi.

Indexed as

Kidney CalculiLithotripsyNephrolithotomy, PercutaneousUreteroscopyAdultAgedEquipment DesignFemaleHumansKidney CalicesMaleMiddle AgedProspective StudiesSuctionTreatment OutcomeFlexible ureteroscopic lithotripsyLower renal Calyceal calculiPercutaneous nephrolithotomyTip-bendable Suction ureteral access sheath

Identifiers

PMID40616669

What OpenQuestion holds

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Registered trials

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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.