ArticleJournal of veterinary internal medicine2026
Burst wave lithotripsy for the treatment of obstructive ureteroliths in cats.
Article in Journal of veterinary internal medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundUreteroliths are a major source of morbidity and mortality in cats, and limited non-surgical options are available for their treatment. Ultrasound-guided, burst wave lithotripsy (BWL) is approved by the Food and Drug Administration to fragment renal and ureteral calculi noninvasively in awake human patients. HYPOTHESIS/
objectivesAssess the safety and efficacy of a veterinary BWL device for the treatment of obstructive ureteroliths in cats. ANIMALS: Eleven client-owned cats; 10 with unilateral ureteral obstruction and 1 with bilateral ureteral obstruction.
methodsIn this single-arm clinical trial, BWL was performed under general anesthesia in treatments ≤90 min. Outcomes included apparent fragmentation, ureterolith passage, decrease in pyelectasia or hydroureter, and decrease in serum creatinine concentration. Adverse events were characterized by severity and relationship to BWL.
resultsIn total, 12 ureters with 17 ureteroliths were treated with BWL. Five ureters received 1 treatment, 6 received 2, and 1 received 3, resulting in 20 total treatments. Ureterolith fragmentation was apparent in 11 of 12 treated ureters. Of 10 ureters with follow-up imaging, 8 had ureterolith passage and an accompanying decrease in ureteral dilatation. For the cats with ureterolith passage, the median serum creatinine concentration change was -29% (range, -56% to 28%) at 1-3 weeks. One serious BWL-related adverse event of worsening obstruction from residual fragments occurred, but was solved with retreatment. CONCLUSIONS AND CLINICAL IMPORTANCE: Burst wave lithotripsy shows promise as a minimally invasive treatment for obstructive ureteroliths in cats. With the system used in our study, more than 1 treatment was often necessary.
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