Development of a urinary lithiasis localizer mechanism to couple ultrasound and extracorporeal lithotripsy equipment in canine model.
BACKGROUND
Due to the evolution of extracorporeal lithotripsy equipment (ESWL) and presently, the fact that most part of the equipment does not present ultrasound to localize urinary calculi, a system that allows adapting ultrasound equipment to ESWL equipment was developed, disposing only of fluoroscopy. Thus, this equipment was developed and was tested in urinary stones in canine models, to check its precision in relation to fluoroscopy.


METHODS
Seven male dogs were utilized with the introduction, in the bladder through the ureteral route, of chalkstones, with initial localization by fluoroscopy, with a further ultrasound coincidence check localization of the vesical stones, being submitted to ESWL with a 3-hour, 21 days and 60 days follow-up after the procedure.


RESULTS
Success of localization in all animals was verified presenting elimination of stones in the first micturitions, after ESWL. No complications were verified in those animals for 60 days.


CONCLUSIONS
We verified that this equipment can lead to an update of the equipment that use only fluoroscopy, increasing in this way, their technical capacity in the treatment of urinary calculi, mainly in cases of non-radiopaque stones.
Andrade
Enrico
E
Department of Urology, Paulista School of Medicine, UNIFESP, Sao Paulo, Brazil. enricoandrade@uol.com.br
Alarcon
Gustavo
G
Pompeu
Eduardo
E
Nardozza
Archimedes
A
Claro
Joaquim A
JA
Ortiz
Valdemar
V
Srougi
Miguel
M
D000818:Animals; D004195:Disease Models, Animal; D004285:Dogs; D008096:Lithotripsy / Q000295:instrumentation* / Q000379:methods; D008297:Male; D013997:Time Factors; D014463:Ultrasonography; D052878:Urolithiasis / Q000000981:diagnostic imaging / Q000628:therapy*