Simultaneously measured inter-arm blood pressure difference is not associated with pulse wave velocity in a clinical dataset of at-risk hypertensive patients

Area of Science:

• Cardiology
• Hypertension Research
• Vascular Biology

Background:

• Systolic inter-arm blood pressure differences have been linked to increased mortality and cardiovascular events in prior research.
• Pulse wave velocity (PWV) serves as a key surrogate marker for subclinical cardiovascular damage.

Purpose of the Study:

• To investigate the association between systolic inter-arm blood pressure differences and PWV in a cohort of treated, at-risk hypertensive patients.
• To determine if inter-arm blood pressure differences correlate with a surrogate marker of cardiovascular damage in this specific patient population.

Main Methods:

• A cohort of 199 treated hypertensive patients from a tertiary hospital hypertension clinic was studied.
• Simultaneous measurements of inter-arm blood pressure (BP) differences, 24-hour ambulatory BP, and PWV were performed.
• Uni- and multi-variate regression models were employed to analyze associations between systolic inter-arm BP difference and PWV.

Main Results:

• Ninety out of 199 participants (45.2%) exhibited an inter-arm BP difference exceeding 5 mmHg.
• No significant association was found between systolic inter-arm BP difference and PWV in this cohort.
• Neither single BP measurements nor 24-hour ambulatory BP showed an association with inter-arm BP differences.

Conclusions:

• The study failed to demonstrate an association between inter-arm blood pressure differences and PWV in treated hypertensive patients.
• Potential contributing factors to these negative findings include the mode of assessment, study design, and the specific characteristics of the treated hypertensive cohort.
• The limited sample size may have restricted the ability to detect smaller effect sizes.