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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Anesthesiology. 2021 Apr 1;134(4):607–616. doi: 10.1097/ALN.0000000000003724

Table 2-.

Linear correlation of all parameters with fluid status

Hemodynamic
Parameter		 r2 (hemorrhage) r2 (resuscitation)
Heart Rate (beats per minute) 0.22 0.15
SBP (mmHg) 0.99 0.40
DBP (mmHg) 0.99 0.72
MAP (mmHg) 0.99 0.79
Pulse Pressure (mmHg) 0.91 0.41
Pulse Pressure Variation 0.84 0.74
MPAP (mmHg) 0.99 0.89
PCWP (mmHg) 0.99 0.98
CVP (mmHg) 0.99 0.93
CO (L/min) 0.98 0.95

r2 (hemorrhage) refers to the square of the correlation coefficient (between 0 and 1) used to assess goodness-of-fit of the linear relationship between the hemodynamic parameter and the amount of blood hemorrhaged over the course of hemorrhage up to −400 mL. r2 (resuscitation) similarly assessed the linear correlation between the hemodynamic parameter and the amount of excess fluid infused over the course of overload resuscitation, from 0 mL to 2,500 mL.