In the article on the base of statistical data processing is proved that weighty factors, which can prolong the period of the stationary treatment are as following: the stone length, the stone square, the number of ESWL seances, the number of pulse, pyelonephritis intensification after operation, haematoma, hematuria. such factors, as the number of seances, power shock waves, “stone track” presence effect on hematuria arising. The risk of the arising of haematoma on move of the shock waves depends on such factor as stone Ro, “stone track” presence, hematuria. The stone length and the number of seances influence probability of the “stone track” development.
