Fig. 3

Kaplan-Meier survival curves in septic animals according to the change in heart rate between baseline and 4 h of sepsis. Twenty-four septic Wistar rats were observed for 48 h. Survival curves are shown for animals with a change in heart rate between baseline and 4 h of < 50 bpm (dashed line; mortality 1/15 = 7%) and those with a change ≥ 50 bpm (continuous line; mortality 7/9 = 78%), log rank p < 0.001