Skip to main content

Computing, Robotics, and Imaging for the Surgical Platform

Journal of Computational Surgery Cover Image

Table 2 Used HRV parameters

From: Impact of cardiac surgery on the autonomic cardiovascular function

Domain Parameter Description Unit
Time domain Linear meanNN Mean value of the beat-to-beat intervals ms
   sdNN Standard deviation of the beat-to-beat intervals ms
  Non-linear shannon Shannon entropy of the beat-to-beat intervals Unitless
   FORBWORD Number of forbidden words Unitless
   POLVAR10 Probability of low variability <10 ms Unitless
Frequency domain PLF/P Normalized low-frequency power (LF 0.04 to 0.15 Hz) Unitless
  PHF/P Normalized high-frequency power (HF 0.15 to 0.4 Hz) Unitless
  PLF/PHF Ratio of LF power to HF power Unitless
  1. Parameters used to quantify HRV. Details on the calculation can be found in [17] and [16].