What is a deep, prolonged unconsciousness from which the patient cannot be aroused-usually the result of a head injury, neurological disease, acute hydrocephalus, intoxication, or metabolic abnormalities?

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Coma is defined as a state of deep, prolonged unconsciousness from which the patient cannot be aroused. This can be caused by a variety of factors including head injury, neurological disease, acute hydrocephalus, intoxication, or metabolic abnormalities. Cerebral contusion refers to a bruising of the brain tissue, concussion refers to a mild traumatic brain injury, and syncope refers to a brief loss of consciousness due to a drop in blood pressure.

What Is a Deep, Prolonged Unconsciousness from Which the Patient