What is the typical CPP target in moderate-severe TBI to optimize cerebral perfusion?

What is the typical CPP target in moderate-severe TBI to optimize cerebral perfusion?

• A. Approximately 60-70 mm Hg
• B. 30-40 mm Hg
• C. 90-100 mm Hg
• D. 50-60 mm Hg

Answer: (A)

In moderate to severe traumatic brain injury, the goal is to keep enough cerebral perfusion so the brain tissue doesn’t become ischemic, but without driving excessive pressure that worsens swelling. This is done by targeting a cerebral perfusion pressure around 60–70 mm Hg. Since CPP equals mean arterial pressure minus intracranial pressure, clinicians adjust MAP (with fluids or vasopressors) and manage ICP to keep CPP in that range. If CPP falls toward the lower end (below ~60), brain tissue risk ischemia; if CPP rises much higher than ~70–75, the increased cerebral blood volume can worsen edema and raise ICP. So, aiming CPP around 60–70 mm Hg balances supplying blood to the injured brain while avoiding additional injury.

In moderate to severe traumatic brain injury, the goal is to keep enough cerebral perfusion so the brain tissue doesn’t become ischemic, but without driving excessive pressure that worsens swelling. This is done by targeting a cerebral perfusion pressure around 60–70 mm Hg. Since CPP equals mean arterial pressure minus intracranial pressure, clinicians adjust MAP (with fluids or vasopressors) and manage ICP to keep CPP in that range. If CPP falls toward the lower end (below ~60), brain tissue risk ischemia; if CPP rises much higher than ~70–75, the increased cerebral blood volume can worsen edema and raise ICP. So, aiming CPP around 60–70 mm Hg balances supplying blood to the injured brain while avoiding additional injury.