Extra corporial shock waves ureteral lithotripsy

Our study included 200 patients who have ureteric stones, these patients were divided according to their age 180 Adults 20lnfants and each category was studied separately. The ureteric stones in infants was distributed as follows: 7 cases at the upper ureter, 5 cases at the middle of the ureter, 8 cases at the distal ureter; wheras they were distributed in 76 cases at the upper ureter, 64 cases at the middle of the ureter, 40 cases at the middle of the ureter. The essential symptom in infants was fever, on the other hand the essential symptom in adults was pain [Renal colic]. Abdominal X-Ray and Echography were performed in all infants and adults, but IVP was performed in most of them. The stones were divided according to their diameter into three groups: < 0.5cm, 0.5-1cm, > 1cm, and according to their density into four groups: [less than bone density, equal to bone density, more thanbone density, lucent]. The stones were studied according to their site [proximal, medium, distal] and compared with their diameters, densities, assisted methods, the interval between symptoms onset and diagnosis and the interval between the diagnosis and lithotripsy performance. The recurrence of lithotripsy of 5 times was the discriminatory line between the success or the failure of lithotripsy in adults, whereas this line was 3 in Intravenous or intramuscular pain relieving was used in adults with scant cases of general anesthesia, but in infants the all cases was performed under general anesthesia. the interval between one lithotripsy and other was two weeks. The evaluation of patients was performed through abdominal X-Ray one-week later. The number of shock waves was 4000 in every lithotripsy for adults and 2500 for infants. The success rate of ESWL for adults was%78.88 and more accurately it was%92.1 at the upper ureter,%84.37 at the middle. ureter,%45 at the distal ureter; whereas the success rate of ESWL for infants was%85 and more accurately it was%l00 at the upper ureter,%100 at the middle ureter,%62, 5 at the distal ureter. The stones less than 1cm in diameter has the best success rate and was needed less numbers of lithotripsy in compared with stones more than 1cm in diameter. The density of stones didn't play any role in determination of the success rate of the ESWL. The interval between symptoms onset and the diagnosis, and the interval between the diagnosis and lithotripsy performance has role in the determination of the success rate of the ESWL and the number of recurrence of lithotripsy Which were needed for each stone. The stones of upper and middle ureter were the most responsible to tripsy in comparing with the stones of distal ureter; especially if their diameter was more than 1cm. Generally, the factors which play a role in the success of ESWL and the determination of number of recurrence of lithotripsy were-The site of the stones-The diameter of the stones-The speed of the diagnosis-The speed of the treatment The extra corporeal lithotripsy success rate in infants was better than in adults