To compare clinical efficacy using the guidance of SonixGPS ultrasound navigation system and general ultrasound for percutaneous nephrolithotomy.

One hundred and fifteen patients with kidney stone underwent PCNL from January 2016 to December 2016 in our hospital. There were seventy-five males and forty females, mean age was (45±10) years. All patients underwent percutaneous nephrolithotomy with holmium laser. Fifty nine cases established percutaneous renal access under the guidance of SonixGPS ultrasound navigation system, and 56 cases setted up percutaneous renal access by general ultrasound. The differences of two groups in the puncturing time, blood loss in puncturing process, success rate of disposable puncture, incidence of sepsis, incidence of delayed hemorrhage, phaseⅠstone clearance rate were compared by statistical analysis software.

Two cases under the guidance of general ultrasound got channel lost and were transferred to phaseⅡ, the percutaneous renal access was successfully established in the other 113 patients without intestinal and pleura damage. The puncture time of SonixGPS navigation group and general ultrasound were(3.9±1.0) min and (5.0±2.0) min respectively, blood loss in puncturing process were (26±9) ml and (28±12) ml respectively. The success rate of disposable puncture was 96.6% and 82.1% respectively, the incidence of sepsis was 1.69% and 1.78% respectively, the incidence of delayed hemorrhage was 3.4% and 8.9% respectively, phaseⅠstone clearance rate was 94.9% and 82.1% respectively. No significant differences were found between the two groups in terms of gender, age, stone location, stone size and degree of hydronephrosis (P>0.05). Significant differences were identified between the two groups in the puncturing time, the success rate of disposable puncture and phaseⅠstone clearance rate (P<0.05).

SonixGPS ultrasound navigation system applied for PCNL is safe and effective, which is a recommended guided approach in PCNL.