Pressure & Perfusion
The normal range for intracranial pressure falls within these values
Five to ten mm Hg because this range reflects normal balance between brain tissue blood and cerebrospinal fluid
Early signs of increased intracranial pressure include headache nausea and this mental change
Confusion occurs early because changes in level of consciousness are the most sensitive indicator of rising pressure
A Glasgow Coma Scale score between 13 and 15 indicates this level of injury
Mild traumatic brain injury because symptoms are typically brief loss of consciousness dizziness or ringing in the ears
A sudden severe headache described as the worst of life is a hallmark of this condition
Subarachnoid hemorrhage occurs due to bleeding into the subarachnoid space often from aneurysm rupture
The priority intervention for any neurological emergency focuses on maintaining this
Airway and ventilation are essential because oxygen delivery prevents further brain injury
This formula is used to calculate mean arterial pressure
Systolic blood pressure plus two times diastolic divided by three because it reflects overall tissue perfusion pressure
Blurred or double vision during increased intracranial pressure indicates involvement of this system
Visual pathways are affected because increased pressure disrupts cranial nerve and optic function
A Glasgow Coma Scale score between 9 and 12 indicates this classification
Moderate traumatic brain injury because there is a longer loss of consciousness and increased risk of complications
Neck stiffness and pain with severe headache suggest irritation of these structures
Meningeal irritation occurs because blood in the subarachnoid space irritates the protective layers of the brain
The most sensitive indicator to monitor for neurological deterioration is this assessment
Level of consciousness changes first because brain dysfunction affects awareness early
This equation determines how well the brain is being perfused
Cerebral perfusion pressure equals mean arterial pressure minus intracranial pressure because it measures blood flow reaching brain tissue
Fixed and dilated pupils indicate this stage of intracranial pressure
Late stage increased intracranial pressure because brainstem compression affects pupil reactivity
A Glasgow Coma Scale score less than 9 indicates this severity
Severe traumatic brain injury because patients often require airway support and immediate intervention
Narrowing of cerebral blood vessels after hemorrhage leads to this complication
Vasospasm reduces blood flow and can cause cerebral ischemia
The head of the bed should be maintained at this angle for clients with increased intracranial pressure
Thirty degrees elevation promotes venous drainage and helps reduce intracranial pressure
An increase in intracranial pressure will have this effect on cerebral perfusion pressure
Decreases cerebral perfusion pressure because rising intracranial pressure reduces the ability of blood to enter brain tissue
Flexion of the arms toward the core in response to pain is known as this type of posturing
Decorticate posturing indicates damage above the brainstem involving corticospinal tracts
Bruising behind the ears after head trauma is known as this sign
Battle’s sign indicates possible skull fracture and underlying brain injury
This medication is given to prevent vasospasm after hemorrhage
Nimodipine or nicardipine are calcium channel blockers that relax vessels and improve cerebral blood flow
This device is considered the gold standard for monitoring and draining intracranial pressure
Ventriculostomy allows direct measurement of pressure and drainage of cerebrospinal fluid
This doctrine explains the fixed volume relationship between brain blood and cerebrospinal fluid
Monro Kellie doctrine states that an increase in one component must be compensated by a decrease in another to prevent rising pressure
Extension of arms and legs with plantar flexion signals this severe neurological finding
Decerebrate posturing indicates brainstem damage and represents a more severe progression of injury
Repeated head injuries can lead to this progressive condition with memory loss and behavioral changes
Chronic traumatic encephalopathy develops due to repeated trauma causing long term cognitive and emotional decline
This anticonvulsant is commonly used to prevent seizures in hemorrhage patients
Levetiracetam prevents seizure activity which could increase metabolic demand and worsen brain injury
This surgical procedure removes part of the skull to allow brain swelling without compression
Hemicraniectomy reduces intracranial pressure by giving the brain space to expand