“…Fourth, this study identified several factors with no association with EE. These factors were heart rate [34,58,63,70,83,90,92,95,106,116,118,137], FiO 2 [70,90,91,138], respiratory rate [70,90,95], respiratory disease diagnosis [22,70,90], PEEP [90,138], CRP [23,52,59,91,134], size [22,51,74,109], and ICU days [22,23,113,116]. Physiologically, heart rate changes and inflammation represented by CRP result in a change in oxygen consumption and hence EE.…”