Cuff(SZ): The Cuff Size Blood Pressure Measurement Trial

The Cuff Size Blood Pressure Measurement Trial

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.

Inclusion Criteria:

• 18-80

Exclusion Criteria:

• Presence of the following on both arms: rashes, gauze dressings, casts, edema, paralysis, tubes, open sores or wounds, withered arms, A-V shunts, or if blood has been drawn from arm within last week.
• Being mentally impaired, pregnant.
• Arm circumference exceeding 50 cm.