title: Wolf Piezolith 2200 versus the modified Dornier HM3. Efficacy and range of indications.
abstract: From February to September 1987, a prospective study was performed at two clinics to compare the Piezolith and the Dornier HM3+ lithotripters. Based on the same clinical indications for extracorporeal shock wave lithotripsy, 334 patients were treated with the Dornier HM3+ and 378 patients with the Piezolith. Whereas stone size was similar in both groups, more ureteral calculi were treated with the Dornier HM3+ (31.1 versus 23%). The rate of successful disintegration and total number of auxiliary measures were similar in both groups. However, the mean number of impulses (HM3+ 1,997 versus Piezolith 2,855) and number of secondary ESWL treatments (HM3+ 15.5% versus Piezolith 45%) differed significantly. According to the locating systems, the success of in situ treatment was similar for renal calculi; however, fewer ureteric stones could be treated in situ at the Piezolith (HM3+ upper ureter 70.6%, middle ureter 82%, distal ureter 71.4% versus Piezolith upper ureter 37.5%, middle ureter 0%, distal ureter 62.8%). The stone-free rate at discharge and after 3 months did not differ in both centers (HM3+ 75% versus Piezolith 72%).
authors.affiliation: Department of Urology, Katharinenhospital, Stuttgart, FRG.
authors.forename: J
authors.initials: J
authors.lastname: Rassweiler
authors.forename: R
authors.initials: R
authors.lastname: Gumpinger
authors.forename: P
authors.initials: P
authors.lastname: Bub
authors.forename: H
authors.initials: H
authors.lastname: Kohl
authors.forename: A
authors.initials: A
authors.lastname: Mayer
authors.forename: F
authors.initials: F
authors.lastname: Eisenberger
mesh_terms: D002648:Child; D006801:Humans; D007669:Kidney Calculi / Q000628:therapy*; D008096:Lithotripsy / Q000295:instrumentation* / Q000379:methods; D011446:Prospective Studies; D014514:Ureteral Calculi / Q000628:therapy*