Monitoring Heart Rate Variability in the Acute Care Setting With the Analgesia Nociception Index

Monitoring Heart Rate Variability In the Acute Care Setting With the Analgesia Nociception Index Introduction According to the International Association for the Study of Pain, pain is Òan unpleasant sensory and emotional experience associ.ated with, or resembling that associated with, actual or potential tissue damage,Ó1,2 whereas nociception is defined as the neural encoding and processing of noxious stimulation.3 In conscious patients, nociception activates various