ArticleWorld journal of urology2023
The effect of irrigation rate on intrarenal pressure in an ex vivo porcine kidney model-preliminary study with different flexible ureteroscopes and ureteral access sheaths.
Article in World journal of urology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 14 citations in OpenAlex.
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- Irrigation performance of a 2-mm rigid cystoscope designed for neonatal cystoscopy: a bench study.Pediatric surgery international · 2026Article
- Handle with care: ureteral access sheath positioning modulates intrarenal pressure-insights from an EAU endourology ex vivo study using four ureteroscope sizes.World journal of urology · 2026Article
- Research progress on treating urinary system stones using ureteroscopy combined With a negative-pressure suction sheath.Frontiers in surgery · 2026Review
- Iatrogenic upper urinary tract injuries during ureteroscopy for urolithiasis: a comprehensive review on incidence, mechanisms and preventative strategies.Nature reviews. Urology · 2025Review
- Intrarenal pressure variations during flexible ureteroscopy in a porcine kidney model: impact of ureteral access sheath types and irrigation methods.World journal of urology · 2025Article
- Real-Time Measurement of Intrarenal Pressure Using LithoVue™ Elite: Focus on Small Ureteral Access Sheaths and Appropriate Irrigation Settings.Journal of clinical medicine · 2025Article
- Novel Flexible Ureteroscopic System for intrarenal pelvic and intracaliceal pressure measurement in porcine models.Scientific reports · 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
- Intelligent control of pressure based on ureteral access sheaths: renal pelvic pressure during flexible ureteroscope perfusion at different sites.Urolithiasis · 2024Article
- Retrograde Intrarenal Surgery for Lithiasis Using Suctioning Devices: A Shift in Paradigm?Journal of clinical medicine · 2024Review
- Intrarenal pressure study using 7.5 French flexible ureteroscope with or without ureteral access sheath in an ex-vivo porcine kidney model.World journal of urology · 2023Article
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Authors and funding
8 authors at 3 institutions in 1 country.
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Abstract
introductionUreteral access sheath (UAS) and irrigation are used in flexible ureteroscopy (fURS). Both conventional UAS (cUAS) and vacuum-assisted UAS (vaUAS) are currently available. Irrigation increases the intrarenal pressure (IRP). Our objectives were to study the effects of various irrigation rates on IRP using different sizes of fURS in different sizes and functions of UAS. MATERIALS AND
methodsTen freshly harvested porcine kidneys served as the study subjects. 11/13F and 12/14F cUAS and vaUAS with 2.8 mm and 3.2 mm fURS were experimented on in various scope/sheath combinations. 6F pressure monitor catheters were placed into upper, middle, and lower calyces. IRPs were recorded under different irrigation rates in cUAS and vaUAS, with either 150 or 300 mmHg aspiration pressures, and with air vent either open or closed.
results12/14F cUAS with 2.8 mm fURS could maintain IRPs below 35 mmHg with irrigation rates up to 200 cc/min. With 3.2 mm fURS, the rate dropped to 110-120 cc/min. With 12/14F vaUAS and vent closed, the IRP remained less than 5 mmHg at 200 cc/min irrigation for both fURS. For 11/13F cUAS, the < 35 mmHg threshold for 2.8 mm fURS was 80-90 cc/min; for 3.2 mm fURS, it was 30-40 cc/min. For 11/13F vaUAS with vent closed, IRPs remained < 5 mmHg at 200 cc/min irrigation for both scopes.
conclusionBoth 12F cUAS and vaUAS can be used safely with 2.8 mm fURS up to 200 cc/min irrigation. With either a smaller sheath or a larger scope, vaUAS with vent closed can maintain IRP in a safe range up 200 cc/min irrigation. vaUAS with vent open performed marginally better than cUAS.
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