Key result
A >40% decrease in heart rate variability preceded a 50% increase in C-reactive protein within 72 hours with a positive predictive value of 90.9% in COVID-19 patients.
Why the study?
CRP increases track inflammation and disease progression in COVID-19 while HRV decreases correlate with worsening disease states, motivating tracking changes in HRV relative to changes in CRP.
Does heart rate variability monitoring predict acute inflammatory response (CRP increase) in COVID-19 patients?
Population
17 COVID-19 patients
Comparison
Changes in HRV compared to changes in CRP
Design
Observational study
Follow-up
Minimum of 7 days
Authors
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HRV-CRP tracking in COVID-19 remains hypothesis-generating; larger prospective studies needed before wearable monitoring informs care.
Observational (n=17)
Does heart rate variability monitoring predict acute inflammatory response (CRP increase) in COVID-19 patients?
Effect estimate: PPV 90.9%, Sensitivity 83.3%
Substantial decreases in heart rate variability (>40%) can predict significant elevations in CRP within the ensuing 72 hours in COVID-19 patients, offering a potential early warning system for inflammatory spikes.
Hasty et al. (2020) conducted an observational in COVID-19 (n=17). Decrease in heart rate variability >40% was evaluated on 50% increase in C-reactive protein during the ensuing 72 hours (PPV 90.9%, Sensitivity 83.3%). A >40% decrease in heart rate variability preceded a 50% increase in C-reactive protein within 72 hours with a positive predictive value of 90.9% in COVID-19 patients.
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