A 53 year old with a history of psychiatric issues presents with altered mental state. She is tachypnoeic and looks unwell.
Her blood tests:
pH 7.25 (7.36-7.44)
pCO2 35.1 (35-45 mmHg)
Na 142 (137-145 mmol/l)
K 2.5 (3.5-5 mmol/l)
Cl 118 (99-111 mmol/l)
Describe and interpret
What drug typically accounts for this picture?
What complication is likely and what bedside and lab test would be helpful?
What ECG changes would you expect?