Question 1:
PH = 7.475, that is mild alkalaemia.
pCO2 = 24 mmHg. So, we have respiratory alkalosis.
Question 1:
PH = 7.475, that is mild alkalaemia.
pCO2 = 24 mmHg. So, we have respiratory alkalosis.
14-year-old girl, COVID day 2, presented with delirium. Her venous blood gases showed the following:
Ph = 7.475
pCO2 = 24 mmHg
Question 1:
PH = 7.31, that is mild acidaemia
PCO2 is high (51 mmHg). So we have respiratory acidosis. We don’t have enough information to decide if it is acute or chronic
70 year old man presented with reduced level of consciousness.
His venous blood gas showed the following:
PH = 7.31
PO2 = 62 mmHg (on 6L O2)
Answers:
PH = 7.479, that is mild acidaemia.
HCO3 = 30 mmol/L (that is high). So, we have metabolic alkalosis.
Next we check the respiratory compensation for metabolic alkalosis. For That we use the following equation: Expected pCO2 = 0.7 x HCO3 + 20 (+/- 5).
28 days old boy brought by his parents for multiple vomiting episodes. His venous gases showed the following:
PH = 7.479
pCO2 = 41 mmHg
pO2 = 34 mmHg
Question 1 answer
PH = 7.236, that is moderate acidaemia
HCO3 = 12.5 mmol/L. So we have metabolic acidosis.
Next we need to calculate the compensation and the the anion gap.
21 year old man presented to ED with fatigue and weakness. His blood gases showed the following:
PH = 7.236
PCO2 = 30 mmol/L
Answers:
PH = 7.415, this is within normal range. slightly more to the alkelaemic side.
pCO2 = 34 mmHg, that is slightly low, this patient is hyperventilating. (Normal pCO2 is 40 mmHg on arterial blood and 48 mmHg on venous blood).
60-year-old women presented to the emergency department compla ining of headache and fatigue. Her venous blood gases showed the following:
PH = 7.415
pCO2 = 34 mmHg