Progressive Increase of Lithotripter Output Produces Better in-Vivo Stone Comminution
نویسندگان
چکیده
منابع مشابه
Progressive increase of lithotripter output produces better in-vivo stone comminution.
BACKGROUND AND PURPOSE Shockwave lithotripsy (SWL) has become a first-line intervention for treatment of nephrolithiasis. However, few studies have examined the effects of modifications in the method of shockwave energy administration on comminution efficiency. We propose that a gradual increase in output voltage will produce superior stone fragmentation in comparison with a constant or a decre...
متن کاملEffect of lithotripter focal width on stone comminution in shock wave lithotripsy.
Using a reflector insert, the original HM-3 lithotripter field at 20 kV was altered significantly with the peak positive pressure (p(+)) in the focal plane increased from 49 to 87 MPa while the -6 dB focal width decreased concomitantly from 11 to 4 mm. Using the original reflector, p(+) of 33 MPa with a -6 dB focal width of 18 mm were measured in a pre-focal plane 15-mm proximal to the lithotri...
متن کاملSystemic leptin produces a long-lasting increase in respiratory motor output in rats
Leptin decreases food intake and increases energy expenditure. Leptin administration into the CNS of mice or rats increases alveolar ventilation and dysfunction in leptin signaling has been implicated in the hypoventilation that can accompany obesity. An increase in CO(2) chemosensitivity has been implicated in this response but it is unclear whether ventilation is augmented when PCO(2) is main...
متن کاملA Comparison of Holmium YAG Laser and Electrokinetic Lithotripter in Pediatric Ureteral Stone Treatment
Background: We evaluated endoscopic treatment of ureter stones with a holmium: yttrium-aluminum-garnet laser (Ho: YAG) lithotripter and an electrokinetic lithotripter (EKL) in children. Methods: Patients with ureteral stones, admitted to the pediatric surgery department of our hospital between November 2011 and January 2015, were evaluated retrospectively. Demographic data, initial symptoms, ag...
متن کاملImprovement of stone comminution by slow delivery rate of shock waves in extracorporeal lithotripsy.
AIM The aim of this study was to investigate the effect of delivery rate of shockwaves (SW) on stone comminution and treatment outcomes in patients with renal and ureteral stones. METHODS Patients with radio-opaque stones in the upper urinary tract that were treated by extracorporeal shock wave lithotripsy (ESWL) were divided into two groups according to delivery rate (120 or 60 SW/min). The ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Endourology
سال: 2006
ISSN: 0892-7790,1557-900X
DOI: 10.1089/end.2006.20.603