IRCT20111210008348N53 IRCT 2024-04-30 Kashan University of Medical Sciences Investigating the effect of red light on the sleep quality of cardiac patients Investigating the effect of red light on the quality of sleep of patients hospitalized in the cardiac intensive care unit 2024-05-04 anticipated 80 Complete https://irct.ir/trial/76456 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: For the sampling method, first the elegible Ssmples will be selected as available and using computer software on the sealed envelope website by placing the number of groups and the total uumber of samples and the number of samples in each block (the total number of samples is 80 people and the number of samples in each block is 8 people) a list of 10 rapndom blocks will be prepared, in each block, 4 people from each group will be placed. N/A Heart disease. Intervention 1: Intervention group: for 2 consecutive nights, from 10:00 PM to 6:00 AM, the room lamps will be turned off and to prevent the white light from the corridors, the room curtains will be drawn and movement will be limited to the patient's room. So, with the reading light which has an infrared lamp with a red filter without visible light, 50 watts with a wavelength of more than 700 NM, Lucky herp brand, the light in the room will be changed to red light. Intervention 2: Control group: There is no Change in the Light of the Room. No - There is not a plan to make this available Justification or reason for not sharing IPD is Data of Participants are Confidential