Assessing Autonomic Nervous System Function by Pulse Rate Variability in Patients with Chronic Obstructive Pulmonary...

Area of Science:

• Cardiology
• Pulmonology
• Biomedical Engineering

Background:

• Heart rate variability (HRV) assesses autonomic nervous system (ANS) function.
• Pulse rate variability (PRV) via pulse oximetry is a potential surrogate for HRV.
• COPD patients exhibit altered ANS function.

Purpose of the Study:

• To evaluate the compatibility of PRV with HRV in patients with COPD.
• To compare low-frequency (LF) and high-frequency (HF) components of PRV and HRV as ANS indicators.

Main Methods:

• Simultaneous measurement of HRV (electrocardiogram) and PRV (pulse oximeter) in COPD patients.
• Bland-Altman analysis to compare LF and HF components derived from HRV and PRV.

Main Results:

• The LF component of PRV showed good consistency with HRV in COPD patients.
• The HF component exhibited a significant fixed error but relatively good consistency.

Conclusions:

• PRV measured by pulse oximetry, particularly the LF component, can effectively estimate ANS function in COPD patients.
• Pulse oximetry offers a practical method for monitoring ANS status in COPD.