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Reliability of morning, before-dinner, and at-bedtime home blood pressure measurements in patients with hypertension.

ABSTRACT: The authors evaluated differences in the reliability of home blood pressure measurements taken in the morning, before dinner, and at bedtime. Forty-eight patients with hypertension (age range, 50-89 years; mean age, 76.4 years) measured their home blood pressure using a validated automatic information/communication technology-based device for 14 consecutive days. Those days were divided into the first seven days (1-7) and the following 8 to 14 days (days 8-14) and compared systolic blood pressure (SBP) reliability in the two periods for each measurement time point. In Bland-Altman analyses, morning SBP showed the least standard error of measurement (3.0 mm Hg). There were fixed biases in morning and before-dinner SBP with average limits of agreement of 3.9 and 6.4 mm Hg, respectively. For at-bedtime SBP, a random error was detected and the minimal detectable change was 13.8 mm Hg. The percentage of near-maximal variation of morning SBP was the smallest at 18.1%. Morning SBP therefore provided the most reliable home blood pressure value in the day.

SUBMITTER: Fujiwara T

PROVIDER: S-EPMC8030996 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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Reliability of morning, before-dinner, and at-bedtime home blood pressure measurements in patients with hypertension.

Fujiwara Takeshi T Hoshide Satoshi S Kanegae Hiroshi H Nishizawa Masafumi M Kario Kazuomi K

Journal of clinical hypertension (Greenwich, Conn.) 20180106 2

The authors evaluated differences in the reliability of home blood pressure measurements taken in the morning, before dinner, and at bedtime. Forty-eight patients with hypertension (age range, 50-89 years; mean age, 76.4 years) measured their home blood pressure using a validated automatic information/communication technology-based device for 14 consecutive days. Those days were divided into the first seven days (1-7) and the following 8 to 14 days (days 8-14) and compared systolic blood pressur ...[more]

PMID: 29316183

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Project description:BackgroundThe US Preventive Services Task Force recommends blood pressure (BP) measurements using 24-h ambulatory monitoring (ABPM) or home BP monitoring before making a new hypertension diagnosis.ObjectiveCompare clinic-, home-, and kiosk-based BP measurement to ABPM for diagnosing hypertension.Design, setting, and participantsDiagnostic study in 12 Washington State primary care centers, with participants aged 18-85 years without diagnosed hypertension or prescribed antihypertensive medications, with elevated BP in clinic.InterventionsRandomization into one of three diagnostic regimens: (1) clinic (usual care follow-up BPs); (2) home (duplicate BPs twice daily for 5 days); or (3) kiosk (triplicate BPs on 3 days). All participants completed ABPM at 3 weeks.Main measuresPrimary outcome was difference between ABPM daytime and clinic, home, and kiosk mean systolic BP. Differences in diastolic BP, sensitivity, and specificity were secondary outcomes.Key resultsFive hundred ten participants (mean age 58.7 years, 80.2% white) with 434 (85.1%) included in primary analyses. Compared to daytime ABPM, adjusted mean differences in systolic BP were clinic (-4.7mmHg [95% confidence interval -7.3, -2.2]; P<.001); home (-0.1mmHg [-1.6, 1.5];P=.92); and kiosk (9.5mmHg [7.5, 11.6];P<.001). Differences for diastolic BP were clinic (-7.2mmHg [-8.8, -5.5]; P<.001); home (-0.4mmHg [-1.4, 0.7];P=.52); and kiosk (5.0mmHg [3.8, 6.2]; P<.001). Sensitivities for clinic, home, and kiosk compared to ABPM were 31.1% (95% confidence interval, 22.9, 40.6), 82.2% (73.8, 88.4), and 96.0% (90.0, 98.5), and specificities 79.5% (64.0, 89.4), 53.3% (38.9, 67.2), and 28.2% (16.4, 44.1), respectively.LimitationsSingle health care organization and limited race/ethnicity representation.ConclusionsCompared to ABPM, mean BP was significantly lower for clinic, significantly higher for kiosk, and without significant differences for home. Clinic BP measurements had low sensitivity for detecting hypertension. Findings support utility of home BP monitoring for making a new diagnosis of hypertension.Trial registrationClinicalTrials.gov NCT03130257 https://clinicaltrials.gov/ct2/show/NCT03130257.

Dataset Information

Reliability of morning, before-dinner, and at-bedtime home blood pressure measurements in patients with hypertension.

Publications

Reliability of morning, before-dinner, and at-bedtime home blood pressure measurements in patients with hypertension.

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