Evaluating the importance of mean stone density and skin-to-stone distance in predicting successful shock wave lithotripsy of renal and ureteric calculi.

Urological Research
Joshua D WiesenthalKenneth T Pace

Abstract

Shock wave lithotripsy (SWL) is considered the first line treatment for the majority of patients with renal and ureteric calculi, with success rates from contemporary series varying from 60 to 90%. Success is dependent on many patient and stone-related factors. We conducted a retrospective analysis of mean stone CT density (MSD) and skin-to-stone distance (SSD) to determine their influence on the success of SWL of renal and ureteric calculi. Data from all patients treated at the St. Michael's Hospital Lithotripsy Unit from May 2004 to June 2009 were reviewed. Analysis was restricted to those patients with a pre-treatment non-contrast CT scan conducted at our center demonstrating a solitary renal or ureteric calculus < or =20 mm in maximal diameter. Successful treatment of renal stones was defined as those patients who were stone free or had asymptomatic, clinically insignificant residual fragments < or =4 mm in diameter, as measured by KUB X-ray, 3 months after a single SWL treatment. Successful treatment of ureteric stones was defined as being stone free on KUB X-ray, 2-weeks post-SWL. Demographic, stone, patient, treatment and follow-up data were collected from a prospective database and review of CT and KUB imaging by two in...Continue Reading

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Citations

Aug 10, 2012·Journal of Endourology·Abdulkadir TepelerMuzaffer Akcay
Nov 28, 2012·The Urologic Clinics of North America·Michael E Lipkin, Glenn M Preminger
Nov 28, 2012·The Urologic Clinics of North America·Naeem Bhojani, James E Lingeman
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Aug 2, 2014·World Journal of Urology·Andreas NeisiusThomas Knoll
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Jun 29, 2012·Korean journal of urology·Ji Woong ChoiHyun Tae Kim
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Jan 17, 2013·Current Opinion in Urology·Dan MagrillKen Anson
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