Start Your Tcrn Journey: 30 Free Practice Questions

A patient with TBI has a BP of 110/60 and an ICP of 22 mmHg. Calculate the Cerebral Perfusion Pressure (CPP) and determine if this meets current guidelines for TBI management.

Explain the Monro-Kellie Doctrine and how the body initially compensates for an expanding intracranial mass (e.g., a hematoma).

A patient presents after a temporal bone fracture with a brief Loss of Consciousness (LOC), a lucid interval, and rapid neurological decline. Identify the likely hematoma and the vessel involved.

Why are elderly patients and those with chronic alcohol use disorder at significantly higher risk for Chronic Subdural Hematomas (SDH) despite relatively minor trauma?

Describe the mechanical force responsible for Diffuse Axonal Injury (DAI) and where these lesions are most typically found on imaging.

A TBI patient’s MAP fluctuates between 50 and 150 mmHg. Describe the normal cerebral autoregulation response and what happens when this mechanism is lost due to trauma.

A patient with a large right-sided hematoma develops a blown right pupil and left-sided hemiparesis. Explain the pathophysiology of these specific findings.

Explain the role of Glutamate and Calcium in the Secondary Injury Cascade following the primary traumatic insult.

Distinguish between the primary and secondary mechanisms of brain injury resulting specifically from an explosion (Blast Injury).

Brain Tissue Oxygenation (PbtO2) monitoring is used in severe TBI. If PbtO2 drops below 20 mmHg while CPP is 65 mmHg, what does this indicate physiologically?

A patient with a severe TBI has a BP of 108/62 mmHg and an ICP of 24 mmHg. Calculate the Cerebral Perfusion Pressure (CPP). Is this value within the recommended target range?

While monitoring a trauma patient's ICP waveform, you observe that the P2 peak (tidal wave) is significantly higher than the P1 peak (percussion wave). What does this specific finding indicate regarding the patient's intracranial status?

A patient with multi-system trauma and a TBI is being ventilated with a PEEP of 15 cmH2O. How does high PEEP typically affect ICP and CPP, and what is the underlying physiological mechanism?

The Monro-Kellie Doctrine is a fundamental concept in trauma nursing. Explain the doctrine's core components and how it dictates the management of a patient with an evolving epidural hematoma.

A trauma patient presents with a MAP of 45 mmHg. Why is this specific MAP value critical in the context of cerebral blood flow (CBF) and the limits of cerebral autoregulation?

To ensure accurate ICP and CPP calculations, at what anatomical landmark should the external ventricular drain (EVD) transducer be leveled, and what is the consequence of the transducer being too low?

A TBI patient has an ICP of 20 mmHg and a BP of 90/50 mmHg. What is the CPP, and what is the PRIORITY nursing intervention based on current TBI management guidelines?

A patient is exhibiting Cushing''s Triad. Identify the three clinical signs and explain the physiological trigger for this late finding in head trauma.

In the management of severe TBI, why is prophylactic hyperventilation (PaCO2 < 30 mmHg) avoided in the first 24 hours, and how does PaCO2 affect ICP calculations and perfusion?

When calculating CPP in a patient with both a TBI and a suspected spinal cord injury (SCI), how do the hemodynamic targets conflict, and which takes precedence?

A patient with a right-sided epidural hematoma displays a fixed, dilated right pupil and left-sided motor weakness. Which herniation syndrome is most likely occurring, and what is the primary anatomical cause of the pupillary change?

A TBI patient progresses from being restless to having small, reactive pupils and Cheyne-Stokes respirations. As the condition worsens, they exhibit decorticate posturing. Which herniation syndrome does this progression represent?

A patient with a posterior fossa hematoma suddenly develops an arched neck, respiratory irregularities, and a rapidly declining heart rate. What type of herniation is suspected, and why is this a neurosurgical emergency?

During the assessment of a patient with a traumatic subarachnoid hemorrhage (tSAH), the nurse notes that passive neck flexion causes the patient to involuntarily flex their hips and knees. Name this sign and the underlying pathology.

A patient with a large left-sided subdural hematoma presents with a dilated left pupil and left-sided hemiparesis (ipsilateral weakness). What is the name of this paradoxical finding and its mechanism?

A nurse observes a patient with a GCS of 6 develop a BP of 190/60, a HR of 48, and irregular breathing. Explain the physiological mechanism behind the widened pulse pressure in Cushing's Triad.

A patient with a significant cerebellar mass undergoes placement of an EVD for obstructive hydrocephalus. Shortly after rapid CSF drainage, the patient becomes deeply comatose with fixed mid-position pupils. What rare herniation syndrome occurred?

A trauma patient responds to painful stimuli with rigid extension of the arms, internal rotation, and plantar flexion. Identify the posturing and the level of brainstem injury it suggests.

Imaging reveals the cingulate gyrus has shifted across the midline under the falx cerebri. While often asymptomatic initially, what specific vascular complication is a major risk of this herniation?

In a trauma patient, how can you clinically differentiate a direct traumatic CN III injury from an impending uncal herniation based on the pupillary exam and GCS?