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TCRN Brain Exam 67 Questions with Verified Answers Temporal - CORRECT ANSWER Which of the cranial bones is most susceptible to injury due to it being the thinnest PIA - CORRECT ANSWER Which layer of meninges attaches to the brain and spinal cord RAS - CORRECT ANSWER What is the name for the portion of the midbrain that is responsible for wakefulness and consciousness CO2 - CORRECT ANSWER Identify the primary regulator of blood flow to the brain Vasodilation - CORRECT ANSWER The trauma RN knows that high PaCo2 levels will cause what change in cerebral blood vessels Increase - CORRECT ANSWER What happens to CPP as ICP falls MAP - CORRECT ANSWER If autoregulation fails in brain tissue, brain perfusion will depend on... 2ndary - CORRECT ANSWER Is hypoxia considered a primary or secondary injury in the trauma patient hyperventilation - CORRECT ANSWER Brief periods of ________ may be indicated if the patient shows s/s of impending herniation to decrease ICP levels Eye, verbal, motor - CORRECT ANSWER Which 3 responses are tested in GCS scores Eye, Motor, Brainstem, Respirations - CORRECT ANSWER Identify the 4 components tested by the 4 score True - CORRECT ANSWER True or false: the four score can be used in patients who are not intubated True - CORRECT ANSWER True or false: Intracranial hemorrhages rarely produce a volume of blood loss large enough to cause hypotension Middle - CORRECT ANSWER Battle's sign is a complication of a _________ fossa fracture in a basilar skull injury Le Fort - CORRECT ANSWER What type of fracture is best described by the documentation "flattened face with a dish-like appearance" B2 transferrin test - CORRECT ANSWER Identify the gold standard for CSF identification testing when there is drainage coming from a patient's nose or ear Tears, Saline, Water, Saliva - CORRECT ANSWER What 4 other sources of drainage produce the same response in a Halo Test that CSF fluid would 3, 4, 5 - CORRECT ANSWER Which three cranial nerves should be tested to ensure how intact the brainstem is True - CORRECT ANSWER True or false: Focal brain injury lesions can be seen on CT scans 72 - CORRECT ANSWER An acute subdural hematoma is made evident within _______ hours 2 - CORRECT ANSWER A chronic subdural hematoma is made evident in _____ weeks Supratentorial - CORRECT ANSWER Identify the most common type of herniation syndrome in trauma patients Brainstem - CORRECT ANSWER In central herniation, when the cerebral hemisphere is pushed downward through the tentorial notch, what structure of the brain is compressed It can be fatal - CORRECT ANSWER What is unique about 2nd impact syndrome in pediatrics 7 - CORRECT ANSWER Eyelid closure occurs through the innervation of which cranial nerve MAP - ICP - CORRECT ANSWER Identify the formula used to calculate CPP 60-100 - CORRECT ANSWER When caring for a trauma patient, the health care team strives to optimize delivery of oxygen and nutrients to the brain by ensuring the CPP falls within the range of ______ mmHg 1/3 - CORRECT ANSWER What fraction of injury-related deaths in the United States are the result of TBIs MVCs - CORRECT ANSWER The most common MOI for facial fracture injuries is.... Falls - CORRECT ANSWER Rachel is completing a project detailing the most frequent cause of TBIs. Her project will focus on _______ Early - CORRECT ANSWER Is amnesia considered an early or late assessment finding for increased ICP Pulse pressure - CORRECT ANSWER Kevin is subtracting his patient's DBP from their SBP. What metric is he attempting to calculate so as to evaluate the severity of his patient's ICP Dilated - CORRECT ANSWER An early sign of herniation syndrome can be seen when the trauma patient's pupil is moderately _______ Motor - CORRECT ANSWER Which component of the GCS score is the most sensitive for identifying patients with severe brain injury Anterior - CORRECT ANSWER Which fossa is likely injured in the patient presenting with periorbital ecchymosis on assessment Inhibits corneal healing - CORRECT ANSWER Why do practitioners avoid sending topical anesthetics home with patients suffering from eye injuries Globe Rupture - CORRECT ANSWER An intraocular pressure reading is contraindicated in trauma patients with what type of eye injury Temporal, Parietal - CORRECT ANSWER 90% of epidural hematomas are associated with fractures to which 2 bones of the skull Epidural Hematoma - CORRECT ANSWER Laceration of the middle meningeal artery would most likely result in which type of brain injury Extension - CORRECT ANSWER Which form of motor posturing is associated with worse outcomes in an epidural hematoma, flexion or extension Headache - CORRECT ANSWER Identify the most common assessment finding in a patient with a surdural hematoma Temporal - CORRECT ANSWER Which lobe of the brain would the trauma nurse expect to be displaced during uncal transtentorial herniation MRI - CORRECT ANSWER What type of imaging study does the trauma nurse expect the physician to order for the patient suspected to have sustained a diffuse axonal injury
