Five-Year Follow-up of Urinary Stone Patients Treated with Extracorporeal Shock Wave Lithotripsy
Follow-up studies were carried out in patients treated with extracorporeal shock wave lithotripsy (ESWL) from February 1980 to May 1984. The 131 Iodo-hippuran clearance studied separately in both kidneys of the first 18 patients showed no deterioration of renal function seven years post-ESWL.
Follow-up of 754 patients, treated between May 1982 and May 1984, with a wide range of indications for ESWL, shows that stones were detected in 55% at hospital discharge, in 16% at six months post-ESWL, and in 24% at an average of 40 months post-ESWL. The portion of particles bigger than 5 mm increased from 4% (6 months post-ESWL) to 47% (40 months post-ESWL). Review of stone location showed an accumulation of residual stones in the lower calices during the first months after ESWL. In the long-term follow-up, the proportion of pelvic stones increased.
Recurrent stones were found in 8%. Between hospital discharge and 40 months post-ESWL, further urological operations, primarily ESWL, had to be performed in 18% of cases.
KeywordsExtracorporeal Shock Wave Lithotripsy Stone Size Urologic Operation Residual Stone Recurrent Stone
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