Annual estimates suggest that more than 20 million patients require treatments in ICUs worldwide to manage critical illnesses, injuries, or exacerbations of chronic conditions. During ICU admission, patients experience extreme physical and psychological stressors, including delirium, fear, lack of privacy, noise, pain, sedation administration, sleep deprivation, and the abnormal ICU environment. These experiences affect a patient’s recovery from critical illness and may result in physical and psychological disorders.