ORIC-I: Optimizing Recovery From Intensive Care: Mechanical Ventilation and Delirium

Inclusion Criteria: * All adult (\>=18 years of age) mechanically ventilated patients admitted to the medical, surgical, trauma, or cardiothoracic ICUs of the UPMC main campus who are expected by the ICU clinical team to require \>24 hours of mechanical ventilation Exclusion Criteria: * Baseline QTc \>480 milliseconds (ms); history of Parkinson's disease; pregnancy; history of schizophrenia or neurologic disease that would confound the delirium assessment; deafness or inability to understand English or Spanish; extubation prior to enrollment; previously enrolled in this study; patient, family, or attending physician refusal; death before enrollment; treatment with haloperidol within 2 days prior to ICU admission; and prisoners.