Key result
Pulse rate variability from photoplethysmography showed marginal inaccuracy in LF/HF during vagal predominance and insufficient agreement in short-term variability indices during sympathetic activation compared to electrocardiography.
Why the study?
Does pulse rate variability (PRV) from photoplethysmography accurately reflect heart rate variability (HRV) from ECG during alterations in sympathovagal balance?
Population
33 healthy subjects (26 male, 7 female, age 22-25 years old)
Comparison
Pulse rate variability obtained using… vs Heart rate variability obtained from…
Design
Cross-sectional
Authors
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Supports caution with PPG-derived PRV during autonomic shifts; hypothesis-generating for wearable validation in dynamic states.
Observational (n=33)
No
Does pulse rate variability (PRV) from photoplethysmography accurately reflect heart rate variability (HRV) from ECG during alterations in sympathovagal balance?
Sympathetic activation increases differences in short-term variability between PRV and HRV, suggesting caution when using PPG-derived PRV as a surrogate for HRV under varying autonomic states.
Chen et al. (2015) conducted an observational in Healthy subjects (n=33). Pulse rate variability (PRV) from photoplethysmography vs. Heart rate variability (HRV) from electrocardiography was evaluated on Agreement between PRV and HRV indices (Bland-Altman ratio). Pulse rate variability from photoplethysmography showed marginal inaccuracy in LF/HF during vagal predominance and insufficient agreement in short-term variability indices during sympathetic activation compared to electrocardiography.
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