70-year-old diabetic man presented with vomiting. His venous blood gases showed the following:
PH = 7.56
pCO2 = 19 mmHg
Author Archives: Basil Muharb
Lab case 401 interpretation
Answers:
Question 1:
pH 7.62 that is moderate to severe alkalaemia
HCO3 36mmol/L, so we have metabolic alkalosis.
Lab case 401
50 year old male with a background of alcohol dependence presents to ED after 24 hours of no alcohol use. He looked anxious and sweaty. He complained of legs cramping and he is feeling increasingly weak. He had difficulties supporting his weight.
His venous blood gases showed the following:
pH = 7.62
pCO2 = 33 mmHg
Lab case 400 interpretation
Question 1:
PH = 6.9, that is severe acidaemia
HCO3 = 22 mmol/L. So, we have metabolic acidosis.
Next, we need to calculate the Anion gap and the compensation.
Lab case 400
21-year-old man brought for ED for impaired mental state, he was extremely agitated and needed 6 staff members to restrain him for IV access and sedation. His venous blood gases showed the following:
PH = 6.9
pCO2 = 24 mmHg
Lab case 399 Interepretation
Question 1:
PH = 7.43 that is with in normal range, more toward alkalotic spectrum
HCO3 = 39.9, that is elevated so we have metabolic alkalosis. Next we need to check the compensation process.
Lab case 399
38 year old lady presented to the emergency department with recurrent vomiting. She was found to have a slipped lapband. Her venous blood gases showed the following
PH = 7.43
pCO2 = 61 mmHg
Lab case 398 interepretation
Question 1:
PH = 7.14, that is severe acidaemia
pCO2 = 53 mmHg, So we have respiratory acidosis. Next we will calculate the compensation.
Lab case 398
75 year old man was brought to ED by ambulance in VF cardiac arrest , CPR in progress. His venous blood gases showed the following
PH = 7.14
pCO2 = 53 mmHg
Lab case 397 Interpretation
Question 1:
PH = 7.32 ( less than 7.35) so, we have mild acidaemia.
PCO2 = 48 (on arterial blood gas > 40), so we have respiratory acidosis.