A nurse is caring for a client with increased intracranial pressure (ICP). Which nursing intervention should be the highest priority?
1Administer prescribed mannitol intravenously
2Encourage the client to perform Valsalva maneuver
3Elevate the head of the bed 30 degrees✓ 정답
4Encourage deep breathing and coughing exercises
해설
Elevating the head of the bed 30 degrees is the priority as it promotes venous drainage to reduce ICP immediately. Other options are incorrect: mannitol requires prescription, Trendelenburg increases ICP, and coughing can raise ICP.
Core Nursing Explanation
This question tests the nurse's ability to prioritize independent nursing interventions for a patient with Increased Intracranial Pressure (ICP). The core concept is understanding the Monro-Kellie doctrine, which states that the skull is a rigid container holding brain tissue, blood, and cerebrospinal fluid (CSF). An increase in the volume of any one component must be compensated for by a decrease in another, or ICP will rise. The priority is to implement actions that immediately reduce cerebral volume and promote venous drainage without causing harm.
Key Concept Analysis
The priority is an Key Point!independent nursing action that can be implemented immediately to reduce ICP. Elevating the head of the bed (HOB) 30 degrees is a fundamental, evidence-based intervention. It facilitates venous drainage from the brain by gravity, reducing cerebral blood volume and, consequently, ICP. This is a safe, first-line measure before administering medications.
Answer Rationale
Option ③ is correct because it is a rapid, independent, and non-invasive nursing intervention that directly addresses the pathophysiology. By promoting venous return, it helps maintain cerebral perfusion pressure (CPP) and prevents further neurological injury. This action aligns with the nursing process of immediate implementation based on assessment.
Distractor Analysis
Option ① (Administer Mannitol): While Mannitol is a key osmotic diuretic for reducing cerebral edema and ICP, it requires a physician's order. The question asks for a nursing intervention, implying independent action. Administering it without an order or as a first step before non-pharmacologic measures is incorrect.
Option ② (Encourage Valsalva): The Watch out for confusion!Valsalva maneuver (bearing down) increases intrathoracic pressure, which impedes jugular venous return. This causes a dangerous increase in ICP and is absolutely contraindicated.
Option ④ (Encourage Deep Breathing/Coughing): While important for pulmonary hygiene, coughing creates a Valsalva-like effect, causing a transient but significant spike in ICP. For a stable patient, it might be done cautiously, but it is never the priority intervention when ICP is already increased.
Related Concepts
Nursing care for increased ICP focuses on preventing actions that increase ICP (e.g., neck flexion, isometric exercises, straining) and promoting actions that decrease it (e.g., head elevation, maintaining PaCO2 within normal limits, avoiding noxious stimuli). Always assess the patient's neurological status using the Glasgow Coma Scale (GCS) and monitor for signs of herniation.
Concept Summary
Goal
Interventions to DO
Interventions to AVOID
Reduce ICP / Promote Venous Drainage
Elevate HOB 30° Maintain head in midline, neutral position Administer osmotic diuretics (e.g., Mannitol) as ordered Maintain normothermia
Trendelenburg position Neck flexion or rotation Valsalva maneuver, straining Cluster care (causes sustained stimulation)
Maintain Cerebral Perfusion Pressure (CPP)
Maintain adequate MAP (Mean Arterial Pressure) Avoid hypotension and severe hypertension Monitor CPP (CPP = MAP - ICP)
Hypotension (reduces CPP) Excessive hyperventilation (can cause cerebral ischemia)
Side-by-Side Comparison!
Nursing Action
Effect on ICP
Rationale & Clinical Note
Elevate HOB 30°
Decreases
Promotes gravity-assisted venous drainage from brain. Standard of care.
Trendelenburg Position
Increases
Increases venous pressure in the head, impeding drainage. Contraindicated.
Lowers PaCO2, causing cerebral vasoconstriction. Used in emergency herniation only, not routine care.
Anatomy, Physiology & Pharmacology Points
Monro-Kellie Doctrine: Brain tissue + Blood + CSF = Constant volume. Increase in one → decrease in another or ICP rises.
Cerebral Perfusion Pressure (CPP): CPP = MAP - ICP. Goal is typically > 60 mmHg. Nursing actions aim to lower ICP or support MAP to maintain CPP.
Mannitol: Osmotic diuretic. Pulls fluid from brain tissue into vasculature, reducing cerebral edema. Monitor for Key Point! electrolyte imbalances (especially hypernatremia, hypokalemia) and renal function.
Memory Tips
HEADS UP for High ICP:HOB up, Examine neuro status, Avoid Valsalva, Drainage promoted, Stimuli minimized, Upright position, Pressure monitored.
30 is Key: HOB at 30 degrees. Not 45 (may compromise perfusion if hypotensive), not flat.
High-Frequency NCLEX Topics
NCLEX loves to test priority-setting in neuro patients. Remember: Key Point!Airway, Breathing, Circulation (ABCs) always come first. In a neuro context, maintaining a patent airway and adequate oxygenation (to prevent CO2 retention which increases ICP) is often the ultimate priority. This question assumes stable ABCs, making the direct ICP-reducing independent action the next priority.
Watch Out for Question Variations!
Change in Priority: If the question adds "client has decreased level of consciousness and snoring respirations," the priority shifts to airway management (e.g., jaw-thrust, preparing for intubation).
Change in Intervention: "Which action should the nurse take first?" often tests the same concept—the independent, immediate action (HOB elevation).
Pharmacology Focus: A question might ask, "The nurse is administering mannitol. Which finding requires immediate reporting?" Correct answer would relate to signs of heart failure (fluid overload) or decreased urine output (renal toxicity).
Nursing Clinical Practice GuideClinical Scenario: You are assigned to Mr. Johnson, a 65-year-old male admitted after a fall with a subdural hematoma. His Glasgow Coma Scale (GCS) has decreased from 14 to 12 over the last hour, and he is complaining of a worsening headache. His vital signs are: BP 150/90, HR 55, RR 18, SpO2 96% on room air.
Nursing Intervention Strategy:
1. Immediate Assessment & Action: Upon noting the change in GCS and headache, your first independent action is to elevate the head of the bed to 30 degrees while ensuring his head is in a neutral, midline position. Call for help and notify the provider immediately.
2. Comprehensive Neurological Assessment: Perform a focused neuro check: GCS, pupil size and reaction, motor strength, and vital signs. Bradycardia with hypertension (Cushing's triad—a late sign) is a red flag for severely increased ICP.
3. Environmental Management: Keep the room quiet and dim. Cluster your nursing care (vitals, turning, assessment) to minimize frequent stimulation, which can raise ICP.
4. Medication Administration: If the provider orders mannitol, administer it via a filter needle as an IV bolus per protocol. Monitor intake and output closely, as the goal is a diuretic effect.
Patient Safety and Precautions:
Never flex the patient's neck or hip. Use log-roll technique for turning.
Instruct the patient (if alert) to avoid bearing down during bowel movements. A stool softener is often prescribed prophylactically.
When suctioning (if needed), pre-oxygenate and limit suction passes to <10 seconds to prevent hypoxia and increased ICP.
Nursing Procedure & Medication FlowProcedure: Positioning for ICP Management
1. Use an electric bed or goniometer to ensure precise 30-degree elevation.
2. Support the head with a small pillow to maintain neutral alignment (ears in line with shoulders).
3. Avoid placing anything under the knees that causes flexion.
Medication: Mannitol 20% IV
Action: Osmotic diuretic. Increases osmolarity of plasma, drawing fluid from brain tissue into bloodstream.
Administration: Use a filter needle to draw up. Administer via large-bore IV as a rapid infusion (usually over 20-30 mins) per order. Monitor for IV infiltration—can cause tissue necrosis.
A Word from Your Senior Nurse
"Managing a patient with increased ICP is all about being proactive and meticulous. That simple act of raising the head of the bed isn't just a task—it's a powerful, immediate treatment you control. In clinical practice, you'll be the one at the bedside noticing the subtle change in a pupil's reaction or a slight dip in the GCS score. Connecting your knowledge of pathophysiology (like venous drainage) to your hands-on care (like positioning) is what makes you an excellent nurse. For the NCLEX, always ask yourself: 'What can I do right now, on my own, to keep this patient safe?' That mindset will guide you to the correct priority."
Increased Intracranial Pressure — A pathological condition where the pressure inside the skull exceeds the normal range (5-15 mmHg). It can result from mass lesions, cerebral edema, hemorrhage, or obstruction of CSF flow, and can lead to brain herniation if untreated.
Monro-Kellie Doctrine — The physiological principle stating that the cranial cavity is a rigid structure containing a fixed volume of brain tissue, blood, and cerebrospinal fluid (CSF). An increase in one component must be compensated by a decrease in another to prevent a rise in ICP.
Cerebral Perfusion Pressure — The net pressure gradient driving blood flow to the brain. Calculated as CPP = Mean Arterial Pressure (MAP) - Intracranial Pressure (ICP). Adequate CPP (typically >60 mmHg) is essential to deliver oxygen and nutrients to brain tissue.
Valsalva Maneuver — Forced exhalation against a closed glottis (e.g., straining during bowel movement, heavy lifting). This increases intrathoracic and intra-abdominal pressure, which impedes jugular venous return to the heart and can cause a dangerous, transient increase in intracranial pressure.
Mannitol — An osmotic diuretic medication used to treat cerebral edema and lower ICP. It works by increasing the osmolarity of the plasma, drawing fluid from the brain tissue into the vascular space, which is then excreted by the kidneys. Requires close monitoring of fluid balance and electrolytes.