Nursing Clinical Practice Guide
Clinical Scenario: You are the nurse on a neuro-trauma unit. Your patient, Mr. Johnson, was admitted 6 hours ago after an MVC. His initial CT showed a cerebral contusion. He has been arousable to voice (GCS 12). During your routine neuro checks, you note his right pupil is now 6mm and barely reacts to light, while the left is 3mm and reactive.
Nursing Intervention Strategy:- 1Immediate Action (Do Not Leave the Patient)Call for help using the nurse call system or shout for a colleague. State clearly, "I need help in room 402, possible herniation!"
- 2AssessmentWhile waiting for help, quickly reassess: Check both pupils again with a bright light. Perform a sternal rub to assess motor response (watch for posturing). Check vital signs.
- 3CommunicationWhen help arrives, have them immediately notify the physician/neurosurgeon and/or activate the Rapid Response Team. Provide a concise report: "Patient with severe TBI, now has a new right fixed and dilated pupil, GCS is dropping."
- 4Prepare for InterventionsEnsure IV access is patent. Have the emergency medication cart nearby. Anticipate orders for stat CT head, Mannitol 20% IV, or preparation for emergency surgery.
- 5Ongoing MonitoringAfter initial interventions, continue frequent neuro checks (every 5-15 minutes as ordered) and monitor for other signs of deterioration.
Patient Safety and Precautions:
* Never dismiss a unilateral pupil change as "just anisocoria" in a TBI patient. Assume it is pathological until proven otherwise.
* When administering hyperosmolar therapy (Mannitol), monitor for electrolyte imbalances (especially hypernatremia and hyperosmolality) and renal function.
* Maintain the head of bed elevated to 30 degrees (unless contraindicated by spinal precautions) to promote venous drainage from the brain.
* Avoid actions that can further increase ICP: excessive suctioning, Valsalva maneuver, neck flexion, and noxious stimuli.
Nursing Procedure & Medication Flow
Procedure: Neurological Assessment (Focused for ICP)- 1Level of Consciousness (LOC)Use AVPU (Alert, Voice, Pain, Unresponsive) or GCS.
- 2PupilsAssess size (mm), shape, equality, and reaction to light (brisk, sluggish, none). Document precisely.
- 3Motor FunctionCheck strength and movement in all extremities. Command: "Squeeze my hands, push/pull with your feet." Note any weakness or abnormal posturing.
- 4Vital SignsWatch for trends (rising BP, widening pulse pressure, bradycardia).
Medication: Mannitol 20% IV
* Action: Osmotic diuretic. Draws fluid from brain tissue into vasculature, reducing cerebral edema.
* Administration: Given as an IV bolus through a filter. Dose is weight-based (e.g., 0.25-1 g/kg).
* Monitoring: Strict I&O (Intake and Output). Watch for hypotension from rapid diuresis and electrolyte shifts.
A Word from Your Senior Nurse
In neuro nursing, you are the guardian of your patient's brain function. Those pupils are your window into their intracranial world. A change there is a screaming alarm bell you cannot ignore. On the NCLEX, they test this because in real life, catching herniation early saves lives. It's terrifying, but your knowledge and swift action are what stand between the patient and catastrophe. When you study, don't just memorize "pupil dilation = herniation." Visualize the scenario, feel the urgency, and know your role. That depth of understanding is what makes a great nurse.