title: Comparison of an in-pharmacy automated blood pressure kiosk to daytime ambulatory blood pressure in hypertensive subjects.
abstract: The objective of this study was to compare serial readings from an in-pharmacy automated blood pressure (BP) kiosk to mean daytime ambulatory BP. A total of 100 community-dwelling adults with hypertension underwent (1) three baseline automated office readings; (2) three in-pharmacy readings on each of four visits (12 total) using the PharmaSmart PS-2000 kiosk; and (3) 24-hour ambulatory BP monitoring between in-pharmacy visits two and three. Paired t-tests, Bland-Altman plots, and Pearson correlation coefficients were used for analysis. Mean BPs were 137.8 ± 13.7/81.9 ± 12.2 mm Hg for in-pharmacy and 135.5 ± 11.7/79.7 ± 10.0 mm Hg for daytime ambulatory (difference of 2.3 ± 9.5/2.2 ± 6.9 mm Hg [P ≤ .05]). Bland-Altman plots depicted a high degree of BP variability but did not show clinically important systematic BP differences. With ambulatory BP as the reference standard, in-pharmacy device results were similar to automated office results. The PharmaSmart PS-2000 closely approximated mean daytime ambulatory BP, supporting the use of serial readings from this device in the assessment of BP.
authors.affiliation: Department of Medicine, University of Alberta, Edmonton, Alberta, Canada; Alberta Diabetes Institute, Edmonton, Alberta, Canada. Electronic address: rpadwal@ualberta.ca.
authors.forename: Raj S
authors.initials: RS
authors.lastname: Padwal
authors.affiliation: Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Raymond R
authors.initials: RR
authors.lastname: Townsend
authors.affiliation: Department of Internal Medicine, Cardiovascular Prevention Centre, Jewish General Hospital, McGill University, Montreal, Québec, Canada.
authors.forename: Luc
authors.initials: L
authors.lastname: Trudeau
authors.affiliation: Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Peter G
authors.initials: PG
authors.lastname: Hamilton
authors.affiliation: Department of Family Practice, University of British Columbia, Vancouver, British Columbia, Canada.
authors.forename: Mark
authors.initials: M
authors.lastname: Gelfer
mesh_terms: D000328:Adult; D000368:Aged; D000416:Alberta / Q000453:epidemiology; D001331:Automation / Q000379:methods*; D001794:Blood Pressure / Q000502:physiology*; D018660:Blood Pressure Monitoring, Ambulatory / Q000379:methods*; D002940:Circadian Rhythm / Q000502:physiology*; D003157:Community Pharmacy Services / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009819:Office Visits / Q000706:statistics & numerical data*; D015995:Prevalence; D015203:Reproducibility of Results
keywords: Measurement; oscillometric; serial readings