From: Combining creatinine and volume kinetics identifies missed cases of acute kidney injury following cardiac arrest
Compartment
Rate of change of mass/volume
Gain
Losses
Creatinine 1
Ċ 1 V 1 + C 1 V ˙ 1
k e C 2 V 2
k e C1V1 + k r C1V1
Creatinine 2
C 2 V ˙ 2 + Ċ 2 V 2
Ġ + k e C1V1
Plasma, 1
V ˙ 1
Ḃ + Ṁ
İ+ U ˙ + V ˙ 2 e
Expandable, 2e
V ˙ 2 e
C l d ( v 1 - v 10 ) v 10
C l d ( v 2 e - v 2 e 0 ) v 2 e 0