title: Twenty-year prevalence of diabetes mellitus and hypertension in patients receiving shock-wave lithotripsy for urolithiasis.
abstract: OBJECTIVE
  To compare the prevalence of hypertension and diabetes mellitus (DM) in patients treated with an unmodified HM-3 lithotripter (USWL) and a second-generation modified HM-3 lithotripter (MSWL) 20 years ago at our Centre with that in the provincial population. To determine whether the type of lithotripter was differentially associated with the development of these sequelae.
  
  
  METHODS
  Retrospective review of 727 patients at Vancouver General Hospital who underwent shock-wave lithotripsy (SWL) between 1985 and 1989. Our study group was compared with Statistics Canada data describing the provincial prevalence of these diseases. Multivariate analysis was performed.
  
  
  RESULTS
  The response rate was 37.3%. There was a greater proportion of overweight and obese individuals in the study group compared with the provincial average. In univariate analysis, lithotripsy with an unmodified HM-3 (USWL) was associated with a higher rate of DM than the provincial rate, whereas lithotripsy with the modified HM-3 (MSWL) was not. Hypertension was more prevalent in all lithotripsy subjects. On multivariate analysis the type of lithotripter was not associated with the development of either sequela.
  
  
  CONCLUSIONS
  No association between lithotripsy and the development of either DM or hypertension in a multivariate analysis Metabolic syndrome may have elevated the prevalence of DM and hypertension observed in our subjects on univariate analysis, which is in keeping with the fact that our study population had statistically higher body mass indices than the provincial rate. Lithotripsy using the HM-3 was not associated with increased DM or hypertension.
authors.affiliation: Department of Urologic Sciences, Gordon & Leslie Diamond Health Care Centre, Vancouver, Canada. ben.chew@ubc.ca
authors.forename: Ben H
authors.initials: BH
authors.lastname: Chew
authors.forename: Bogard
authors.initials: B
authors.lastname: Zavaglia
authors.forename: Christine
authors.initials: C
authors.lastname: Sutton
authors.forename: Robin K
authors.initials: RK
authors.lastname: Masson
authors.forename: Siu Him
authors.initials: SH
authors.lastname: Chan
authors.forename: Reza
authors.initials: R
authors.lastname: Hamidizadeh
authors.forename: Justin K
authors.initials: JK
authors.lastname: Lee
authors.forename: Olga
authors.initials: O
authors.lastname: Arsovska
authors.forename: Victor A
authors.initials: VA
authors.lastname: Rowley
authors.forename: Charles
authors.initials: C
authors.lastname: Zwirewich
authors.forename: Kourosh
authors.initials: K
authors.lastname: Afshar
authors.forename: Ryan F
authors.initials: RF
authors.lastname: Paterson
mesh_terms: D000368:Aged; D015992:Body Mass Index; D003920:Diabetes Mellitus / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000209:etiology*; D008096:Lithotripsy / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000150:complications; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D052878:Urolithiasis / Q000628:therapy*