The Effect of Tracheal Intubation-Induced Autonomic Response on Photoplethysmography

Figure 2

Change (absolute values) in pulse rate (PR) and photoplethysmogram component (AC, DC, and PI) data from baseline values. Data are mean (thick line) ± SD over 60 heartbeats. Data is illustrated for 5 heartbeats before and 55 heartbeats after the beginning of the response. The red horizontal bars illustrate values that are significantly () different from baseline values. Units for AC and DC are analog-to-digital converter counts (AD).