From Subjective to Objective: The Bedside Value of HRV in AssessingChronic Pain Complicated by Emotionaland Sleep Issues.
HRV is not suitable for diagnosis or stand-alone decision-making, but may serve as a practical adjunctive marker for risk stratification and symptom monitoring, and HFnorm and lnHF emerged as recurrently important predictors of pain, sleep disturbance, and depressive symptoms.