Manifestations of acute brain ischemia (Cushing reflex) are due primarily to

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The manifestations of acute brain ischemia (Cushing reflex) are due primarily to sympathetic nervous system activation, which leads to an increase in blood pressure and heart rate in an attempt to restore blood flow to the brain. Parasympathetic nervous system activation typically leads to a decrease in heart rate and blood pressure. Autoregulation helps to maintain blood flow to the brain within certain limits, but it is not the primary mechanism involved in the Cushing reflex. Loss of brainstem reflexes can be seen in severe cases of acute brain ischemia, but it is not the primary cause of the Cushing reflex.

Manifestations of Acute Brain Ischemia (Cushing Reflex) Are Due Primarily