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Video: Tract creation using plasma vaporization

Randomized and prospective trial comparing tract creation using plasma vaporization with balloon dilatation in percutaneous nephrolithotomy

Po Hui Chiang and Hsin Hao Su

Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan


• To evaluate the efficacy and safety of plasma vaporization for tract creation in percutaneous nephrolithotomy (PCNL).


• In this randomized prospective trial we enrolled 65 patients and assigned each to one of two groups: 33 patients were randomly scheduled to undergo plasma vaporization and 32 were scheduled to undergo balloon dilatation for tract creation.

• A bipolar resectoscope mounted with a plasma vaporization button electrode or a traditional balloon dilator were used to create the nephrostomy tract.


• The mean blood loss, mean length of hospital stay and mean operating time, stone-free rates and postoperative complications in the two groups were compared using the t-test or chi-squared test (Fisher’s exact test).

• The plasma vaporization group had a significantly lower mean (SD) decrease in haematocrit level (3.5 [2.8]% vs 6.6 [3.3]%; P = 0.02) and a shorter mean (SD) hospital stay (2.6 [1.2] days vs 5.3 [3.4] days; P = 0.0).

• There were no significant differences in the operating time, stone-free rate or cases of postoperative fever between the two groups.


• The plasma vaporization technique is safe, leads to less blood loss than the other techniques, and is a simple solution for creating the nephrostomy tract for PCNL.


1 reply
  1. Ashish Rawandale-Patil
    Ashish Rawandale-Patil says:

    I saw with interest the PK creation of the PCNL tract
    I had some doubts
    PCNL tract creation is based on separating the renal tissue and reaching the Pelvicalyceal system. I am not sure how many nephrons would be fulgurated by the TUris system when this is being done as a prophylaxis, contemplating haemorrhage which may never occur.
    If fulguration of the tract was done why was gelatin foam used at the end of the procedure?
    What happens if the initial puncture traverses a viscous like the colon, spleen or liver.

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