SAQ 902 – Respiratory – acute on chronic hypercapnic respiratory failure

Marked out of 10.00

A 61-year-old obese woman receives 7.5 mg IV morphine for abdominal pain and is placed on oxygen via a Hudson mask at 6 L/min. Twenty minutes later her GCS is 12.

ABG parameter Value
pH 7.24
pCO2 92 mmHg
pO2 50 mmHg
HCO3 49 mmol/L
BE +10
O2 saturation 78%
Lactate 1.2 mmol/L
Na 142 mmol/L
K 3.8 mmol/L
Cl 86 mmol/L
Glucose 11.4 mmol/L
Hb 184 g/L
COHb 7%

Describe the acid-base abnormalities, including relevant calculations.

(Marked out of 3.0)


/ 3

List four abnormalities other than acid-base disturbance.

(Marked out of 4.0)


/ 4

Explain the likely causes of the metabolic abnormalities and why.

(Marked out of 3.0)


/ 3

Total Score: 0 / 10

Percentage: 0%