Document Detail

A novel approach to office blood pressure measurement: 30-minute office blood pressure vs daytime ambulatory blood pressure.
MedLine Citation:
PMID:  21403139     Owner:  NLM     Status:  MEDLINE    
PURPOSE: Current office blood pressure measurement (OBPM) is often not executed according to guidelines and cannot prevent the white-coat effect. Serial, automated, oscillometric OBPM has the potential to overcome both these problems. We therefore developed a 30-minute OBPM method that we compared with daytime ambulatory blood pressure.
METHODS: Patients referred to a primary care diagnostic center for 24-hour ambulatory blood pressure monitoring (ABPM) had their blood pressure measured using the same validated ABPM device for both ABPM and 30-minute OBPMs. During 30-minute OBPM, blood pressure was measured automatically every 5 minutes with the patient sitting alone in a quiet room. The mean 30-minute OBPM (based on t = 5 to t = 30 minutes) was compared with mean daytime ABPM using paired t tests and the approach described by Bland and Altman on method comparison.
RESULTS: We analyzed data from 84 patients (mean age 57 years; 61% female). Systolic and diastolic blood pressures differed from 0 to 2 mm Hg (95% confidence interval, -2 to 2 mm Hg and from 0 to 3 mm Hg) between mean 30-minute OBPM and daytime ABPM, respectively. The limits of agreement were between -19 and 19 mm Hg for systolic and -10 and 13 mm Hg for diastolic blood pressures. Both 30-minute OBPM and daytime ABPM classified normotension, white-coat hypertension, masked hypertension, and sustained hypertension equally.
CONCLUSIONS: The 30-minute OBPM appears to agree well with daytime ABPM and has the potential to detect white-coat and masked hypertension. This finding makes 30-minute OBPM a promising new method to determine blood pressure during diagnosis and follow-up of patients with elevated blood pressures.
Mark C van der Wel; Iris E Buunk; Chris van Weel; Theo A B M Thien; J Carel Bakx
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Annals of family medicine     Volume:  9     ISSN:  1544-1717     ISO Abbreviation:  Ann Fam Med     Publication Date:    2011 Mar-Apr
Date Detail:
Created Date:  2011-03-15     Completed Date:  2011-07-14     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  101167762     Medline TA:  Ann Fam Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  128-35     Citation Subset:  IM    
Department of Primary and Community Care, Radboud University Nijmegen Medical Centre, The Netherlands.
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MeSH Terms
Blood Pressure
Blood Pressure Monitoring, Ambulatory / instrumentation,  methods*
Health Status Indicators*
Hypertension / diagnosis*
Middle Aged
Statistics as Topic
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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