Surgical pleth index (SPI) monitoring is a representative, objective nociception-monitoring
device that measures nociception using photoplethysmographic signals. It is easy to apply to …

Results Within a 2-year time-frame, we identified validation studies for four monitors
[analgesia nociception index (ANI), nociception level monitor (NOL), surgical pleth index …

Background: Currently, there is no gold standard for monitoring noxious stimulation during
surgery, and the surgical pleth index (SPI) is only one of many monitoring methods. It is …

Background/Objectives: Hemodynamic instability and inappropriate postoperative pain
perception (IPPP) with their consequences constitute an anesthesiological challenge in …

Dexmedetomidine decreases heart rate (HR) and increases high frequency (HF) component
of HR variability (HRV). Analgesia Nociception Index (ANI) measures nociception by …

The high-frequency variability index (HFVi) is an index of heart rate variability using the
same algorithm as the analgesia nociception index and indicates sympathetic and …

High-frequency variability index, which is calculated based on heart rate variability derived
from the R-wave peak to R-wave peak interval in the electrocardiogram, is used in clinical …

Introducción: la monitorización de la nocicepción (actividad del sistema nervioso simpático
y/o parasimpático como referencia de analgesia o dolor) en cirugía es fundamental para el …

Introduction: monitoring nociception (activity of the sympathetic and/or parasympathetic
nervous system as a reference for analgesia or pain) in surgery is essential for the patient's …