42-year-old alcoholic man presented with vomiting. His venous blood gases showed the following:
PH = 7.579
pCO2 = 48 mmHg
HCO3 = 45 mmol/L
Category Archives: Lab Cases
Lab case 390 interepretation
Question 1:
PH = 6.88, that is severe acidaemia
HCO3= 5.3 mmol/L. So, we have metabolic acidosis.
Next step is to calculate the anion gap to know which type of metabolic acidosis and we need to calculate the respiratory compensation.
Lab Case 390
85-year-old man presented with recurrent syncope episodes. His blood gases (on 3 L O2) showed the following:
PH = 6.88
pCO2 = 30 mmHg
Lab case 389 interpretation
Question 1:
PH = 7.349, that is mild acidaemia
HCO3 = 18 mmHg. so we have metabolic acidosis.
Since we have metabolic acidosis then we need to calculate the compensation and the anion gap.
Lab case 389
25-year-old police academy student brought to ED due to collapse in training. His heart rate was 170/min, Blood Pressure was 100/55 and his temperature was 39.5.
His venous blood gases showed the following:
PH = 7.349
Lab case 388 interpretation
Question 1:
PH = 7.55, that is moderate alkalaemia.
pCO2 = 26 mmHG (<40), so we have respiratory alkalosis. This can be acute or chronic respiratory alkalosis.
Lab case 388
46-year-old female patient presented with few episodes of vomiting. Her VBG showed the following:
PH = 7.55
pCO2 = 26 mmHg
Lab case 387 Interpretation
Answers:
Question 1:
pH = 7.357, that is within the normal range, towards the acidotic side.
HCO3 = 16.2, that is low. So, we have metabolic acidosis
Lab case 387
A 27-year-old female presented with fever, diarrhoea and feeling unwell for 3 days. Her vitals showed the following:
Blood pressure = 102/50 mmHg
Pulse rate = 138/min
Lab case 386 interpretation
Question 1 answer