Effect of Varying Renal Pelvis Pressure during Normothermic Machine Perfusion in Ureterorenoscopy

What is it about?

This study describes the first use of an ex vivo normothermic machine perfusion (NMP) system to evaluate the effects of raised pressures on the kidney during ureteroscopy. Three pairs of porcine kidneys were used, and the researchers performed ureterorenoscopy while continuously monitoring physiologically relevant variables, including raised pelvicalyceal pressure (PCP). The results showed that urological intervention with PCP monitoring during ex vivo normothermic kidney perfusion was possible, and that the experimental set-up and results were consistent and reproducible. The study demonstrated that ex vivo perfusion of porcine kidneys retrieved from a commercial abattoir may be used for functional assessment of the impact of endourological intervention on the kidney, and that this model is a useful and reproducible way to assess the effects of endourological procedures on the kidney.

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Why is it important?

The research is important because it demonstrates the use of an ex vivo normothermic machine perfusion (NMP) system to evaluate the effects of raised pressures on the kidney during ureteroscopy. By adapting the existing NMP system to allow ureterorenoscopy to be performed and physiologically relevant variables to be continuously monitored during experimental manipulation, the researchers were able to thoroughly evaluate the effects of such raised pressure on the kidney and examine interventions intended to decrease these pressures. This is important because it provides a valuable tool for understanding the impact of endourological procedures on the kidney, which can ultimately lead to the development of safer and more effective treatments for patients undergoing such procedures. Key Takeaways: 1. The study reports the first use of an ex vivo normothermic machine perfusion (NMP) system for evaluation of the effect of raised pressures on the kidney during ureteroscopy. 2. The researchers adapted their existing NMP system to allow ureterorenoscopy to be performed and physiologically relevant variables to be continuously monitored during experimental manipulation. 3. The study demonstrates that urological intervention with PCP monitoring during ex vivo normothermic kidney perfusion is possible and that the experimental set-up and results are consistent and reproducible. 4. The research provides a valuable tool for understanding the impact of endourological procedures on the kidney and can ultimately lead to the development of safer and more effective treatments for patients undergoing such procedures.