Renal anatomical factors influence on stone free rates after eswl and pcnl of the lower pole stones
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Abstract
The work treats of the study of the impact of anatomic peculiarities of the system of the lower renal calyx on the stone free rates after extracorporeal shock wave lithotripsy and percutaneous nephrolithotripsy. The advantage of the methods of percutaneous nephrolilolripsy has been proved by the possibility of the liquidating of the stones more successfully with the longer neck of the lower renal calyx by 4,42 mm, more acute infundibulopelvic angle (to 4,91° of infundibulopelvic angle-1 and to 7,47° of infundibulopelvic angle-2 (p<0,001)), with equal values of infundibulum-transversal angle (p=0,28). It was held according to the analogous dispersions of the samples with all the angles (F-test; p≥0,07). The obtained data prove, that the patients who completely were deprived of the fragments after extracorporeal shock wave lithotripsy had more obtuse infundibulopelvic angle (closer to 90°) in relation to the total sample of the patients with the acute infundibulopelvic angle, in comparison with those who had been submitted to extracorporeal shockwave lithotripsy and those who had been submitted to percutaneous nephrolithotripsy. It has been admitted that with the average infundibulopelvic angle–1 (M±m) <80,09±0,64° or infundibulopelvic angle-2 (M±m) <38,8±0,78° and the average the largest size of the lower pole stone 0,83±0,12 cm, the patients should be more effectively submitted to the percutaneous nephrolithotripsy than to extracorporeal shock wave lithotripsy.
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