SAQ 1438 – Major chest trauma with CXR and arterial blood gas

Marked out of 24.00

A 25-year-old man is brought to your tertiary ED after a major motor vehicle crash. He was the driver of a van that collided head-on with a sedan on a highway.

He was retrieved by helicopter from a rural hospital, where he was intubated for reduced consciousness and a right intercostal catheter was inserted. His initial chest X-ray is shown below.

Supine chest X-ray after major chest trauma.
Initial chest X-ray.

His initial observations are pulse 130/min, BP 75/45 mmHg and oxygen saturation 86%. An arterial blood gas taken during initial management is shown below.

Parameter Result Reference range
FiO2 0.4
pH 6.86 7.35-7.45
pCO2 75 mmHg 35-45 mmHg
pO2 55 mmHg
HCO3 13 mmol/L 22-33 mmol/L
Na 138 mmol/L 135-145 mmol/L
K 6.1 mmol/L 3.5-5.2 mmol/L
Cl 101 mmol/L 95-110 mmol/L
Lactate 11.5 mmol/L 0.5-2.2 mmol/L

List four pathologies shown on the chest X-ray. For each, give one supportive radiographic feature.

(Marked out of 8.0)


/ 8

List four abnormalities on the arterial blood gas and give the most likely explanation for each.

(Marked out of 8.0)


/ 8

State four initial actions you would take based on all of the clinical information provided.

(Marked out of 4.0)


/ 4

List four measures you would use to minimise the chance of this patient developing a coagulopathy.

(Marked out of 4.0)


/ 4

Total Score: 0 / 24

Percentage: 0%