To determine the impact of overcuffing (using a too-large cuff) and undercuffing (using a too-small cuff) on initial BP and average BP measurements when using an automated BP device, overall and stratified by appropriate cuff size To determine if the impact over- or under-cuffing differs based on the following patient characteristics: 1. Hypertensive (≥140/90 based on triplicate measures using appropriately sized cuff) vs. non-hypertensive. 2. Arm circumference (continuous) 3. Obesity status
The investigators propose a cross-sectional study of adult participants recruited from the community. Enrolled participants will have 2-3 sets of three automated BPs measured, each set with a different cuff size. To accomplish this, the investigators will utilize a 2-3 period cross-over design: • Two or three different periods with 3 automated BP measurements, using a BP cuff that is: * Appropriately sized based on mid-upper arm circumference ( standard) * Too small (one size lower than appropriate) * Too large (one size higher than appropriate) Individuals in whom the smallest available cuff (small adult) and largest available cuff (extra-large cuff) is appropriate for their arm circumference will only be able to undergo two periods of BP measurements.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SCREENING
Masking
NONE
Enrollment
194
Each participant will have 4 sets of 3 blood pressure measurements taken. The participants will be randomized to the order in which the cuff sizes are used.
Johns Hopkins ProHealth Research Center
Baltimore, Maryland, United States
Difference in systolic BP in appropriately-sized cuff vs. too small cuff
Difference between (1) 1st systolic BP and (2) average of 3 systolic BP from measurements (mmHg).
Time frame: Up to 90 minutes
Difference in systolic BP in appropriately-sized cuff vs. too large cuff
Difference between (1) 1st systolic BP and (2) average of 3 systolic BP from measurements (mmHg).
Time frame: Up to 90 minutes
Difference in diastolic BP in appropriately-sized cuff vs. too small cuff
Difference between (1) 1st diastolic BP and (2) average of 3 diastolic BP from measurements (mmHg).
Time frame: Up to 90 minutes
Difference in diastolic BP in appropriately-sized cuff vs. too large cuff
Difference between (1) 1st diastolic BP and (2) average of 3 diastolic BP from measurements (mmHg).
Time frame: Up to 90 minutes
Difference in blood pressure based on hypertension status
To determine the blood pressure difference based on hypertensive (≥140/90 based on triplicate measures using appropriately sized cuff) vs. non-hypertensive participants.
Time frame: Up to 90 minutes
Difference in blood pressure based on arm circumference
To determine the blood pressure difference based on arm circumference (continuous).
Time frame: Up to 90 minutes
Difference in blood pressure based on BMI
To determine the blood pressure difference based on normal BMI (\<25 kg/m2) vs. overweight BMI (25 kg/m2-29.99 kg/m2) vs. Class I Obesity (30 kg/m2-34.99 kg/m2) vs. ≥Class II Obesity (\>35 kg/m2).
Time frame: Up to 90 minutes
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