Depending on the illness, disease, or condition that put a patient in ICU to begin with, uncomplicated ICU psychosis is usually totally reversable. The cause must be determined, including review of all medications and their side effects. If a medication may have induced hallucinations, an alternative medication should be used. Nurses should continually reassess the patient's mental status and report changes to the physician.

Sometimes, the patient is so ill from the original problem that the best course of action is to treat the psychosis without withdrawing a suspected medication, in cases where the suspected medication is deemed vital to the patient's physical recovery.

Also, it's easy to become disoriented as a patient in an ICU. There are usually no windows, no indication whether it is day or night, sleep may be frequently interrupted or the patient loses days due to sedation, and other factors all contribute to disorienation and short-term psychosis.

Yes, a person needs REM, in the ICU at hospitals there is a diagnosis knowen as ICU psycosis. It means that a patient is showing signs of psycosis due to the lack of sleep. This often includes both visual and auditory hallucianations. Once the regualar pattern of sleep is restored the hallutions /psychosis disappears.

ICU -- Intensive Care Unit

ICU Medical was created in 1984.

Psychosis is a term that refers to an individual who is out of touch with reality. An example of psychosis is Schizophrenia.