title: [Electromagnetic shock wave lithotripsy plus bile acids for the treatment of gallblader stones: results and perspectives from the first 57 patients].
abstract: Fifty seven patients were selected from 620 cases with gallstones to be treated with an electromagnetic shock wave generator (Lithostar Plus). The machine has an overhead module with an electromagnetic generator able to produce 150-150 bar of pressure in the center of the focal zone (2 x 8 cms.) An in line ultrasound probe permits in vivo view of stone localization and fragmentations. The wide aperture of the device permits to treat patients with little pain in ambulatory basis. The mean age of the patients was 50 +/- 14 years, 57 were female and 20 were male. Stones were single in 35 cases and were multiple (2-4 gallstones) in the rest. The patients received a mean of 2620 +/- 371 shock waves. Intravenous analgesia (Fentanyl 87 +/- 40 ug p/session) was required in 26 cases. In 58.5% of the cases, fragmentation produced gallstone-rests of < 0.5 cm. Larger fragments (> 0.5 cm), were observed after an initial shock wave session in 33%. These patients underwent additional treatments sessions. Hence patients received 1.8 +/- 0.8 sessions. Minor fragmentation or no fragmentation after the first session was observed in the 14.5%. Mild biliary pain appeared in 17 patients and acute biliary colic in 2, one of these underwent emergency cholecystectomy. Overall gallstone disappearance after one year after lithotripsy, plus bile acid therapy (10-12 mg Kg day) was 72%. Patients with single gallstones were free of stones of fragments in 92% of the cases, after the same period of follow up.
authors.affiliation: Clínica y Fundación Médica Sur, Puente de Piedra 150, Tlalpan, México 14050, DF.
authors.forename: M
authors.initials: M
authors.lastname: Uribe
authors.forename: J M
authors.initials: JM
authors.lastname: Sánchez
authors.forename: J M
authors.initials: JM
authors.lastname: Tielve
authors.forename: B
authors.initials: B
authors.lastname: Dávila
authors.forename: L
authors.initials: L
authors.lastname: Gurza
authors.forename: F
authors.initials: F
authors.lastname: Bosques
authors.forename: W
authors.initials: W
authors.lastname: Kettenhofen
authors.forename: C
authors.initials: C
authors.lastname: Sánchez
authors.forename: G
authors.initials: G
authors.lastname: Castorena
mesh_terms: D000368:Aged; D002635:Chenodeoxycholic Acid / Q000627:therapeutic use*; D002756:Cholagogues and Choleretics / Q000627:therapeutic use*; D002769:Cholelithiasis / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000628:therapy*; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008096:Lithotripsy / Q000009:adverse effects / Q000295:instrumentation; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016896:Treatment Outcome; D014463:Ultrasonography; D014580:Ursodeoxycholic Acid / Q000627:therapeutic use*
chemical_list: D002756:Cholagogues and Choleretics; D002635:Chenodeoxycholic Acid; D014580:Ursodeoxycholic Acid