22nd February 2024

A 45 year old male is brought to the emergency department by ambulance after suffering blunt trauma to the abdomen.

A 45 year old male is brought to the emergency department by ambulance after suffering blunt trauma to the abdomen. He is hypotensive with a blood pressure of 84/60 and tachycardic with a heart rate of 120 bpm. Initial blood test results reveal the following:

Na 136 (135-145 mmol/l)
K+ 4.8 (3.5-5 mmol/l)
Ur 9 (3-7 mmol/l)
Cr 84 (60-125 umol/l)
Hb 78 (135-175 g/L male)
Clotting – No abnormalities detected.

Select the most appropriate option for initially managing this patient: