ArticleWorld journal of urology2024
Effect of intrarenal pelvic pressure on pyelo-tubular backflow and renal cortical blood perfusion during mini-percutaneous nephrolithotomy.
Article in World journal of urology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Experimental and clinical studies: a scoping review of intrarenal pressure in percutaneous nephrolithotomy.World journal of urology · 2026Article
- [Effect of leg-split-free lateral decubitus position and lithotomy position on renal pelvic pressure and clinical outcomes during flexible ureteroscopic lithotripsy].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2026Article
- Association between intraoperative low renal pelvic pressure time and postoperative infectious complications after percutaneous nephrolithotomy: a single-centre retrospective cohort study.World journal of urology · 2026Article
- Monitoring Intrarenal Pressure vs. Irrigation Fluid Absorption for Infection Prevention in Ureteroscopy.Advances in urology · 2026Review
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
purposeTo investigate the effects of intrarenal pelvic pressure (IPP) on pyelo-tubular backflow and renal cortical blood perfusion during mini-percutaneous nephrolithotomy (MPCNL).
methodsDynamic changes in pyelo-tubular backflow and renal cortical blood perfusion were studied in six patients undergoing MPCNL using dynamic contrast-enhanced ultrasonography (CEUS) and IPP monitoring.
resultsCEUS of intrarenal pelvic perfusion revealed that renal tubules began to exhibit contrast agent reflux when IPP exceeded 34 mmHg during the MPCNL procedure. There was a positive correlation between renal tubule contrast agent reflux and IPP (P < 0.05). Intravenous CEUS of renal cortical blood flow demonstrated that both intrarenal pelvic perfusion time and IPP during MPCNL significantly affected renal cortical blood perfusion. Intrarenal pelvic perfusion time and pressure were negatively correlated with contrast agent peak intensity (PI) and area under the curve (AUC) (P < 0.05). Longer intrarenal pelvic perfusion times and higher pressures resulted in decreased renal cortical blood perfusion.
conclusionThis study directly confirmed through dynamic CEUS and real-time IPP monitoring that an increase in IPP above the threshold of approximately 34 mmHg during MPCNL in patients leads to reflux through the renal tubules and a significant decrease in renal cortical blood perfusion. The safe upper limit for intrarenal pelvic perfusion pressure during MPCNL is approximately 34 mmHg.
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