80 year old lady with type 2 DM was referred for high blood sugar. Her blood gases showed the following:
PH = 7.39
pCO2 = 48 mmol/L
80 year old lady with type 2 DM was referred for high blood sugar. Her blood gases showed the following:
PH = 7.39
pCO2 = 48 mmol/L
Answers:
PH = 7.34, that is very mild acidaemia.
HCO3 = 14 mmol/L. So, we have metabolic acidosis.
Next we need to calculate Anion Gap and compensation.
A police recruit doing a 20 km pack hike. Collapsed. GCS on arrival was 7. His temperature was 39.2 on arrival. His venous blood gases showed the following:
PH = 7.34
pCO2 = 27 mmHg
Answers:
PH = 7.391, that is within the normal range, slightly to the acidic side.
pCO2 = 57 mmHg, that is high. So we have respiratory acidosis.
It is not clear from the history if the condition is acute or chronic. Accordingly we are going to check for both.
58-year-old lady with history of obstructive sleep apnoea presented with Syncope. Her venous blood gases showed the following:
PH = 7.391
pCO2 = 57 mmHg
Answers
PH = 7.507, that is alkalaemia
pCO2 = 28 mmHg. So, we have respiratory alkalosis.
60 year old man presented with fever and dysurea. His blood gases showed the following:
PH = 7.507
pCO2 = 28 mmHg
Question 1:
PH = 7.28, that is mild acidaemia
HCO3 = 17 mmol/L. So we have metabolic acidosis.
Question 1:
PH = 7.409, that is with in normal range
pCO2 = 54 mmHG, that is suggestive of respiratory acidosis.
HCO3 = 33.3, that is suggestive of metabolic alkalosis.