Post Op Deleriu

Question 1

What are some causes of post-op delirium

Answer 1

Hypoxia (post-operatively)

Infection (commonly UTI or LRTI)

Drug-induced (benzodiazepines, diuretics, opioids, or steroids) or drug withdrawal (alcohol or BZNs)

Dehydration or pain

Constipation or urinary retention

Electrolyte abnormalities (e.g. hyponatraemia, hypernatraemia, or hypercalcaemia)

CVS

Question 2

What investigations would you order?

Answer 2

Bloods – FBC, U&Es + Ca2+, TFTs, and glucose

B12 and folate levels may also be additionally requested

Blood cultures and / or wound swabs

Urinalysis and/or CXR

CT head (only if relevant)