Trial reportUrolithiasis2024
RIRS with FV-UAS vs. MPCNL for 2-3-cm upper urinary tract stones: a prospective study.
Trial report in Urolithiasis, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 4 of them syntheses that pooled it.
What it found
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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.
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Who cites it
25 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Retrograde intrarenal surgery with flexible and navigable suction access sheaths vs mini-percutaneous nephrolithotomy for large upper urinary tract stones: a systematic review and meta-analysis.BJU international · 2026Pooled it
- The evolution of retrograde intrarenal surgery: a comprehensive meta-analysis of suction-assisted versus conventional techniques against mini-PCNL for 2-3 cm renal stones.International urology and nephrology · 2026Pooled it
- Efficacy and safety of retrograde intrarenal surgery with a flexible and navigable suction sheath (FANS-RIRS) versus mini-percutaneous nephrolithotomy (mPCNL) for 2-3 cm renal stones: a systematic review and meta-analysis of randomized controlled trials.World journal of urology · 2026Pooled it
- Comparison of safety and efficacy of negative pressure aspiration assisted retrograde intrarenal surgery and traditional percutaneous nephrolithotomy in the treatment of upper urinary tract stones larger than 2 cm: a systematic review and meta-analysis.International journal of surgery (London, England) · 2025Pooled it
- F-URS with FANS versus mPCNL for 2-3 cm UUTS: a RCT with a subgroup analysis of 2-2.5 cm stones.BJU international · 2026Trial
- Trial
- Trial
- Comparison of T-tilt, Trendelenburg, and dorsal lithotomy positions in retrograde intrarenal surgery: surgical, inflammatory, and efficiency outcomes.International urology and nephrology · 2026Article
- Active migration technique in RIRS for 1- to 2-cm middle and upper ureteral stones in a prospective randomized controlled study.BJUI compass · 2026Article
- Network meta-analysis of clinical efficacy and safety of flexible ureteroscopic holmium laser lithotripsy combined with tip-flexible suction ureteral access sheath for kidney stones.American journal of translational research · 2026Review
- Article
- Tip-flexible suctioning ureteral access sheath combined with flexible ureteroscope: a single-institution experience including in vitro experiments.BMC urology · 2025Article
- Article
- Impact of flow rate and ratio of endoscope-sheath diameter on stone removal in flexible ureteroscopic lithotripsy: in vitro and CFD analyses insights.International urology and nephrology · 2025Article
- Clinical efficacy analysis of two different types of ureteral access sheaths in RIRS for the treatment of 2-4 cm renal stones.World journal of urology · 2025Article
- Size matters: an in vitro evaluation of flexible vacuum-assisted ureteral access sheaths.Urolithiasis · 2025Article
- Article
- Relocation of big stone fragments with direct-in scope suction.World journal of urology · 2025Article
- Constructive feedback on the use of FV-UAS with RIRS for treating 2-3 cm upper urinary tract stones.Urolithiasis · 2025Article
- Retrograde intrarenal surgery combined with flexible vacuum-assisted ureteral access sheath versus traditional ureteral access sheath for 1-2 cm lower calyceal renal stones: a prospective, randomized controlled study.American journal of clinical and experimental urology · 2025Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To observe the efficacy and safety of retrograde intrarenal surgery (RIRS) combined with flexible vacuum-assisted ureteral access sheath (FV-UAS) and minimally invasive percutaneous nephrolithotomy (MPCNL) in patients with 2-3 cm upper urinary tract stones. A total of 160 patients with 2-3 cm upper urinary tract stones were prospectively randomized into 2 groups-80 in the FV-UAS group and 80 cases as control in the MPCNL group. The stone-free rates (SFRs) at different times (postoperative 1st day and 4th week) were considered as the primary outcome of the study. The secondary end points were operative time, hemoglobin decrease, postoperative hospital stay, and operation-related complications. There was no obvious difference between the two groups in patient's demographics and preoperative clinical characteristics (all P > 0.05). Postoperative data showed that mean decrease in hemoglobin level was less in FV-UAS group than that in MPCNL group (5.3 vs. 10.8 g/L, P < 0.001). Postoperative hospital stay in FV-UAS group was more shorten than that in MPCNL group (2.7 vs. 4.9 days, P < 0.001). There was no statistical significance between the two groups in SFRs during postoperative 1st day and 4th week (both P > 0.05). However, in terms of the rates of bleeding and pain, MPCNL group were both significantly higher than FV-UAS group (6.2 vs. 0.0%, P = 0.023; 16.2 vs. 2.5%, P = 0.003; respectively). Our study showed that RIRS with FV-UAS, a new partnership to treat 2-3 cm upper urinary tract stones, was satisfying as it achieved a high SFR rate and a low rate of complications. This method was safe and reproducible in clinical practice.
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