Brachial-ankle pulse wave velocity increasing with heart rate accelerates

Area of Science:

• Cardiology
• Vascular Physiology
• Biomedical Engineering

Background:

• Pulse wave velocity (PWV) is a key indicator of arterial stiffness.
• Pacemaker implantation is common in patients with cardiac conditions.
• Understanding factors influencing PWV in these patients is crucial for cardiovascular health assessment.

Purpose of the Study:

• To investigate the relationship between heart rate (HR) and brachial-ankle pulse wave velocity (ba-PWV).
• To explore this association in patients dependent on pacemakers.
• To determine if changes in HR affect ba-PWV measurements.

Main Methods:

• Retrospective observational study of 68 pacemaker-dependent patients.
• ba-PWV measurements were collected at various set heart rates (60-100 bpm).
• Statistical analysis, including generalized estimating equations, adjusted for clinical factors.

Main Results:

• Significant differences in ba-PWV and diastolic blood pressure were observed across different HRs (P < 0.001).
• ba-PWV was independently associated with HR after adjusting for SBP, DBP, age, and sex.
• Higher HR coefficients indicated increased ba-PWV with accelerating heart rates.

Conclusions:

• Heart rate significantly influences brachial-ankle pulse wave velocity measurements.
• In pacemaker patients, elevated heart rates correlate with increased arterial stiffness.
• These findings highlight the importance of considering HR when interpreting ba-PWV in pacemaker-dependent individuals.