EXPERIENCE OF EXTRACORPOREAL SHOCKWAVE LITHOTRIPSY FOR KIDNEY AND UPPER URETERIC STONES BY ELECTROMAGNETIC LITHOTRIPTOR
Abstract
Background: Extracorporeal Shock Wave Lithotripsy (ESWL) is a non-invasive treatment of urinarystones which breaks them, by using externally applied, focused, high intensity acoustic pulse, into
smaller pieces so that they can pass easily through ureter. Shock wave generation, focusing, coupling
and stone localisation by fluoroscope or ultrasound are the basic components of ESWL. ESWL has
some complications and is contraindicated in certain situations. The aim of this study was to evaluate
the effectiveness and safety of ESWL in kidney and upper ureteric stones by Electromagnetic
Lithotriptor. Methods: All adult patients with renal and upper ureteric stones having a diameter of up to
1 Cm were included in the study. Basic evaluation such as history, examination, ultrasound and
excretory urography were performed. Electromagnetic lithotripsy was done and data were collected on
a printed proforma from 1st January 2008 to 30th March 2009 in Institute of Kidney Diseases, Peshawar.
Results: Out of a total of 625 patients 463 were male and 162 were female; 67.36% of patients were
having renal stones, 23.84% upper ureteric and 8.8% both renal and ureteric stones. Complications
noted were renal colic in 9.76%, haematuria in 3.2%, steinstrasse in 2.72%, and fever in 1.12% of
patients. The stone free rate was 89% and 7% of patients were having stone fragments <4 mm. ESWL
failed in 4% of patients. Conclusion: ESWL is a safe and effective way of treating kidney and upper
ureteric stones.
Keywords: Extracorporeal shock wave lithotripsy (ESWL), kidney and upper ureteric stones
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