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RIRS and Pressure
1/ Hi everyone! Warning - not a "COVID" tweet
I'd like to present a little summary on intrarenal pressure (IRP) during RIRS
1 cmH2O = 0.73 mmHg
IRP should be kept lower than 30 cm H2O
Lowest irrigation flow (IF) to keep a clear vision is 21 ml/min
1/ Hi everyone! Warning - not a "COVID" tweet
I'd like to present a little summary on intrarenal pressure (IRP) during RIRS
1 cmH2O = 0.73 mmHg
IRP should be kept lower than 30 cm H2O
Lowest irrigation flow (IF) to keep a clear vision is 21 ml/min
2/
With no Ureteral Access Sheath (UAS) gravity irrigation pressure of 50, 100, and 200 cm H2O will lead to 15, 30, and 55 cm H2O of IRP with IF of 23, 47 and 80 mL/min correspondingly
The maximal IRP during manual irrigation can reach 598.4 cm H2O
With no Ureteral Access Sheath (UAS) gravity irrigation pressure of 50, 100, and 200 cm H2O will lead to 15, 30, and 55 cm H2O of IRP with IF of 23, 47 and 80 mL/min correspondingly
The maximal IRP during manual irrigation can reach 598.4 cm H2O
3/
With gravity IP of 100 cm H2O with a 242 μm laser fiber in the working channel and no outflow resistance IF was 14 to 15 mL/minute
Difference between UAS and outer diameter of scope should be no less than 3 Fr
IRPs remain lower than 30 cmH2O if a UAS bigger than 10/12 F
With gravity IP of 100 cm H2O with a 242 μm laser fiber in the working channel and no outflow resistance IF was 14 to 15 mL/minute
Difference between UAS and outer diameter of scope should be no less than 3 Fr
IRPs remain lower than 30 cmH2O if a UAS bigger than 10/12 F
