Sepsis associated delirium mimicking postoperative delirium as the initial presenting symptom of urosepsis in a patient who underwent nephrolithotomy

Table 1 Risk factors for postoperative delirium[2,7,9,10]

Age > 65-70 yr

Pre-existing dementia, physical or cognitive impairment

Tobacco or alcohol use

Metabolic derangements (dyselectrolytemia)

Hypoxia, hypercarbia, hypotension

Sepsis

Drug withdrawal

Nature of surgery (cardiac surgery)

Use of certain drugs (narcotics, benzodiazepines, cholinesterase inhibitors and drugs with anticholinergic properties)

Physical restraint

Sleep deprivation

Pain

Anaemia

Urinary catheter