Coprophagy in Humans

At this point, observation is as follows:

BP: 125/82
HR: 92
RR: 28
SPO2: 92% on 15L oxygen

And the abg shows:

pH 7.42,
pCO2 3.8 mmHg
pO2 37.6 mmHg
Met HB: 2.3

HB: 120 g/L
PLT: 271 109/L WBC:4.1 109/L
CRP: 1mg/L
DDimer: 136 ng/mL
Sodium: 137mmol/L
Potassium: 4.5 mmol/L
Urea: 17mmol/L
Creatinine: 89 mmol/L

CXR: no abnormalities detected.