Introduction: To detect safety and feasibility of miniperc and SWL for treatment of average sized
(1-2 cm) radiopaque lower pole calculi in a prospective randomized manner.
Material and methods: In the period from January 2014 to June 2015, 150 patients were attached
to this study with single lower pole radiopaque stone ranging from 10- 20mm. Patients were
divided randomly into two groups using computer generated randomization in an equal manner.
First group patients were subjected to miniperc procedure while second group patients underwent
SWL. Patient's characters, stones' characters, fluoroscopic time, operative time, blood
transfusion, hospital stay, retreatment, auxiliary procedure and complications using modified
Clavien grading are tabulated and analyzed .
Results :This study included 2 equal groups 75 patients in each group. As regard age
(37.75±11.25 vs 40.55±10.55), BMI (26.92±2.26 vs 27.29±2.87) and stone size (1.55±0.28 vs
1.57±0.26) there was no significant statistically difference in both groups. SFR (76% vs 96%),
Operative time (44.81±7.06 vs 93.37±12.29 min), fluoroscopy time (53± 2.45 vs 180±7.31sec.),
hospital stay (5.72 ±1.01 vs 45.19 ± 8.48 hour) and blood transfusion were significantly more in
miniperc group. Retreatment rate (45.3% vs 2.7%) and auxiliary procedure (24% vs 4%) were
significantly greater in SWL group.
Conclusion: Shock wave lithotripsy is less invasive than percutaneous stone removal but it is
also less effective for lower pole radiopaque calculi. Miniperc has better SFR, lower auxiliary
and retreatment rates, however it resulted in more drawbacks. |
