KUMJ | VOL. 12 | NO. 1 | ISSUE 45 | JAN-MAR, 2014
Outcomes of Extra Corporeal Shock Wave Lithotripsy in Renal and Ureteral Calculi
Joshi HN, Karmacharya RM, Shrestha R, Shrestha B, de Jong IJ, Shrestha RKM
Abstract: Background
Since the introduction in early 1980s, Extracorporeal Shockwave Lithotripsy
(ESWL) became the accepted first line treatment modality for renal and upper
ureteric stones. It is simple, safe and effective noninvasive procedure which can
be performed without anaesthesia in outpatient basis. The objective of this study
was to determine the efficacy of ESWL to achieve complete stone clearance in the
patients with different sizes of renal and upper ureteric stones.
Objective
The aim of this study was to assess the outcome, efficacy and complications of
ESWL in the treatment for renal and ureteric stones in terms of the site and the size
of the stone in the patients presented at Dhulikhel Hospital Kathmandu University
Hospital.
Method
In this prospective study a total of 430 (214 renal and 216 ureteric) cases of urinary
stone disease in 257 male and 173 female patients treated by ESWL at Dhulikhel
Hospital, Kathmandu University Teaching Hospital during time period of May 2010
to June 2012 were included. Data of patients with renal and ureteric stones were
evaluated for stone site, size, and number of sessions. Data were analyzed using
spss 13.0.
Result
Out of 430 cases, the overall stone free rate in after 1st session was 341 (79.3%) at
one month and in three months follow up (3 sessions) it was increased up to 414
(96.3%). In 16 (3.7%) patients treatment was failed. Average size of the stone was
12.24 (SDą 3.65) mm.
Stone free rate was 154 (72%) in the case of renal and 187 (86.6%) in the case of
ureteric stones in first session. In three months follow up (three sessions) it was 204
(95.4%) and 210 (97.2%) respectively for renal and ureteric stones. In relation to
size the stone free rate in <10mm, 10-15mm and > 15mm was 97%, 97% and 90%.
Conclusion
ESWL is the first line preferred choice for renal and upper ureteric stones which
provides the maximum stone free rate in the case of stone size smaller than 1.5cm.
Keyword : ESWL, outcome, renal stones, ureteric stones, urinary stone disease, urolithiasis
