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Postoperative delirium (POD) is a common and serious neurocognitive complication after surgery, particularly in elderly patients undergoing major cancer surgeries. It is associated with prolonged hospital stay, impaired quality of life, increased postoperative cognitive dysfunction, and higher mortality. The pathophysiology of POD is multifactorial and involves neuroinflammation, oxidative stress, impaired cerebral perfusion, and neurotransmitter imbalance. Several anesthetic agents have been investigated for their potential neuroprotective effects against POD. Ketamine, through NMDA receptor antagonism, may reduce neuroinflammation and provide hemodynamic stability and opioid-sparing analgesia, although concerns remain regarding hallucinations and psychomimetic effects. Propofol, acting through GABA receptor activation, may protect against oxidative neuronal injury but may also induce
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