20 year old epileptic woman presented to the emergency department after polypharmacy overdose. Her VBG showed the following:
PH = 7.28
Author Archives: Basil Muharb
Lab case 357 interpretation
Answers
PH = 7.025, that is severe acidaemia.
pCO2 = 116 mmHg, so we have respiratory acidosis.
Next, we calculate the compensation. For acute respiratory acidosis, we expected HCO3 to increase by 1 (from 24), for every 10 pCO2 above 40.
Lab case 357
55 year old man was found unresponsive, his blood gases showed the following:
PH = 7.025
pCO2 = 116 mmHg
pO2 = 45 mmHg
Lab case 356 Interpretation
Question 1:
PH = 7.55, that is moderate alkalaemia.
pCO2 = 23 mmHG, so we have respiratory alkalosis. This can be acute or chronic respiratory alkalosis.
Next we need to calculate the compensation…
Lab case 356
25 year old man with presumed cyclical vomiting, presented with post prandial chest pain and vomiting. His blood gases showed the following:
PH = 7.55
pCO2 = 23 mmHg
Lab case 355 interpretation
Question1:
PH = 6.71, that is severe, life threatening acidaemia
pCO2 = 125 mmHg, Very high. So we have respiratory acidosis. This can be acute, chronic or acute on chronic.
Lab case 355
70 year old man brought to ED with ROSC after cardiac arrest. He remained bradycardic after multiple doses of adrenalin. His bradycardia responded to a single dose of atropine. Blood gases for this patient showed the following:
PH = 6.71
Lab case 353 interpretation
Question 1:
We should consider ascending cholangitis in any patient with fever and features of obstructive jaundice till prove otherwise.
The diagnosis of ascending cholangitis is a clinical diagnosis. Patients usually have the classic Charcot triad of abdominal pain, fever, and jaundice.
Now we will discuss each component of this Liver Functions Tests separately.
Bilirubin = 101 umol/L.
Lab case 353
75 year old lady presented to the emergency department after a fall. In ED she was found to be slightly febrile with blood pressure of 95/55. LFT were requested and it showed the following:
Bilirubin = 101 umol/L (< 16)
Lab case 351 interpretation
Question 1:
PH = 7.53, that is mild alkalaemia
pCO2 = 25 mmHg, that is low (<40), so we have respiratory alkalosis.