| Effect of skin-to-stone distance on shockwave lithotripsy success. | |
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MedLine Citation:
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PMID: 18721043 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: We evaluated the effect of increased body habitus on stone-free rates after shockwave lithotripsy (SWL), determined by three reproducible skin-to-stone distances (SSDs) on CT. PATIENTS AND METHODS: We retrospectively reviewed the records of 85 patients with preoperative CT scans available on Stentor Radiology Imaging who underwent SWL with the unmodified Dornier HM3 lithotripter from 2002 to 2007. SSDs were measured at the following angles: 0 degrees (vertical), 30 degrees, and 90 degrees (horizontal). Successful therapy was defined as stone free (residual fragments <2 mm) on follow-up imaging. Data were analyzed using descriptive statistics, Student t test, and the Fisher exact test. RESULTS: Four hundred and eighty patients underwent SWL at our institution from 2002 to 2007; 85 patients (50.6% men, mean age 50.8 +/- 15.7 years, mean body mass index [BMI] 28.8 +/- 6.6 kg/m2) had preoperative CT scans available for review. On follow-up imaging (142.7 +/- 217.2 days), 49.4% of patients were stone free. Mean SSDs (vertical, 30 degrees, horizontal) in patients who were stone-free v those with residual stone were 104.3 +/- 26.2 mm v 102.6 +/- 29.9 mm (P = 0.79), 103.9 +/- 28.2 mm v 101.0 +/- 31.5 mm (P = 0.66), and 106.6 +/- 25.3 mm v 107.1 +/- 29.3 mm (P = 0.94), respectively. CONCLUSIONS: Multiple variables have been shown to be associated with SWL success. In our sample of patients with preoperative CT scans, SSD was found to have no effect on SWL success. |
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Authors:
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Bruce L Jacobs; Marc C Smaldone; Arlene M Smaldone; Daniel J Ricchiuti; Timothy D Averch |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of endourology / Endourological Society Volume: 22 ISSN: 1557-900X ISO Abbreviation: J. Endourol. Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-08-25 Completed Date: 2008-10-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8807503 Medline TA: J Endourol Country: United States |
Other Details:
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Languages: eng Pagination: 1623-7 Citation Subset: IM |
Affiliation:
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Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA. jacobsbl@upmc.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Female Humans Lithotripsy / methods* Male Middle Aged Skin* Tomography, X-Ray Computed Urinary Calculi / pathology*, radiography, therapy* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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