A 37 year old man presents to your ED feeling unwell.

His blood tests show:pH  7.22  (7.36-7.44)

pCO2  46  (35-45  mmHg)

HCO3  18  (22-26 mmol/l)

BE  -10

Na  144  (137-145  mmol/l)

K  3.8  (35-5 mmol/l)

Cl  113  (99-111 mmol/l)

Creat  85  (<130 umol/l)

Glucose  5

Lactate  7  (<2 mmol/l)

Describe and interpret the blood tests

How do you classify the causes of lactic acidosis?