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Completed

NCT Number: NCT03732924

Zero to Five Automated Oscillometric Office Blood Pressure (AOBP) Measurement

The Hypertension Canada Clinical Practice Guidelines for blood pressure measurement using AOBP recommend against any wait time prior to commencing the measurement. The recent AHA guidelines however call for a 5-minute rest first. In uncontrolled hypertension, AOBP is typically higher than the daytime readings from ambulatory blood pressure monitoring (ABPM), but this is not the case for patients with controlled hypertension.

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Key information

Conditions

Hypertension Cardiovascular Diseases Vascular Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Sunnybrook & Women's College Health Sciences Centre

Toronto, Ontario, M4N 3M5, Canada

About this study

Objective:

Does a 5 minute rest or no rest before measurement using AOBP provide the most accurate reading in patients with controlled and uncontrolled hypertension, and in patients with white coat hypertension compared to daytime ABPM?

Implications:

Through this study, we hope to:

(i) Advance the understanding of the role of AOBP in measuring blood pressure. (ii) Determine whether a 5-minute rest, or no rest at all is needed prior to AOBP measurement.

(iii) Assess the relationship of AOBP to daytime ABPM for patient with controlled and uncontrolled hypertension and in patients with white coat hypertension.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 18 years or older
  • Referred for ABPM
  • Written informed consent

Exclusion criteria

  • Unable to perform AOBP or ABPM for some reason

Treatment and study plan

Zero to Five Automated Oscillometric Office Blood Pressure (AOBP) Measurement

Diagnostic Test

To compare the difference between the daytime ABPM and AOBP with zero or five minutes wait time.

Primary outcomes

  1. Difference in systolic and diastolic BP in patients randomized to zero or five minutes wait before the AOBP measurement.

    Time frame: 4 months - 1 yr

    difference in blood pressure

Secondary outcomes

  1. Difference in systolic and diastolic BP between the AOBP and daytime ABPM in patients randomized to zero or five minutes wait before the AOBP measurement.

    Time frame: 4 months - 1yr

    difference in blood pressure

Sponsors and collaborators

Lead sponsor

Sunnybrook Health Sciences Centre

Other

Collaborators

  • KMH Cardiology and Diagnostic Centres

Registry information

Official study title

Zero to Five Automated Oscillometric Office Blood Pressure (AOBP) Measurement: the Impact of a 5 Minute Rest Time on AOBP Measurement

Important dates

Study start
2018
Primary completion
2020
Study completion
2020
First posted
Nov 7, 2018
Registry last updated
Sep 9, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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