63 years old man presented with vertigo. His bloods showed the following:
Na = 136 mmol/L
K = 6.3 mmol/L
Category Archives: Lab Cases
Lab case 373 interpretation
PH = 7.55, that is moderate alkalaemia.
PCO2 = 30 mmHg (Less than 40) so we have respiratory alkalosis.
Lab case 373
28-year-old female doctor developed severe migraine episode after finishing night shifts. She vomited multiple times. Her venous blood gases showed the following:
PH = 7.55
PaCO2 = 30 mmHg
Lab case 372 interpretation
**** For more details about individual liver enzymes, please look at Lab case 367 interpretation.
Answers:
Lab case 372
18 year old woman recently returned from overseas, she presented with fever and was diagnosed with ITP with platelets count of 54. Her Liver Functions Tests shows the following:
Bilirubin = 26 umol/L
Lab case 371 interpretation
Question 1:
PH = 7.035, that is sever acidaemia
We have high pCO2 and low HCO3, this patient’s acidosis is most likely due to combination of metabolic and respiratory acidosis.
Lab case 371
53 years old type I diabetic lady was brought to the emergency department with tiredness, Blood gases were taken in ED. While awaiting the results of these gases the patient had a seizure. The blood gases (before the seizure) showed the following
PH = 7.035
pCO2 = 52 mmHg
Lab case 370 Interpretation
PH = 7.481, That is mild alkalaemia.
pCO2 = 21 mmHg, so we have metabolic alkalosis.
Next, we will calculate the compensation. It is not clear from the history if the respiratory alkalosis is acute or chronic.
Lab case 370
50 years old type 1 diabetic women presented with shortness of breath; her blood gases showed the following:
Ph = 7.481
pCO2 = 21 mmHg
Lab case 369 interpretation
PH = 7.294, that is moderate acidaemia (very close to be mild) – PH down to 7.3 is considered mild.
HCO3 = 6 mmol (Less than 24) so we have metabolic acidosis. Because we have metabolic acidosis, then we need to calculate both the anion gap and the respiratory compensation for this patient.