This trial focuses on a Phase II randomized masked clinical trial testing the effectiveness and safety of peri-operative administration of ramelteon, a melatonin agonist in the prevention of postoperative delirium.
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Number of Participants With Delirium During Two Days Following Surgery
Timeframe: Up to Post Operative Day 2
Number of Participants With Delirium in the Post Anesthesia Care Unit (PACU)
Timeframe: Post Operative Day 0: Post Anesthesia Care Unit Following Recovery from Anesthesia