IRCT20230522058252N1 IRCT 2023-05-27 Tehran University of Medical Sciences Low-dose intravenous ketamine with haloperidol in reducing delirium and agitation Comparison of the effect of low-dose intravenous ketamine with haloperidol in reducing delirium and agitation in elderly patients admitted to the intensive care unit: an open-label randomized clinical trial 2021-03-05 anticipated 44 Complete https://irct.ir/trial/70279 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: First, individuals were selected using simple randomization and then eligible individuals were selected by random blocking method with a ratio of 1: 1 to two groups. Randomization was performed using random number tables, and the results were assessed by a doctor who was blinded to the study protocol. 3 Condition 1: Delirium in elderly patients. Condition 2: Agitation in elderly patients. Intervention 1: Intervention group 1: receiving haloperidol 2.5 mg intramuscularly. Intervention 2: Intervention group 2: receiving ketamine at a dose of 20 mg. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is The data that support the findings of this study are available on reasonable request from the corresponding author. Some data are not publicly available due to their containing information that could compromise the privacy of research participants.