The intracranial pressure (ICP) of a brain injured client who is on a ventilator has increased from 15 mm Hg to 25 mm Hg within the last 30 minutes. The client is beginning to flex all extremities intermittently. Based on these findings, which immediate action should the nurse take?

Reference Range:

• Increased cranial pressure (ICP) [7 to 15 mm Hg]

Rationale for Correct Choices

• Acute kidney injury: The client gained 5 lb (2.3 kg) in 3 days with marked edema and minimal urine output, indicating fluid retention due to impaired renal perfusion after hypovolemic shock. The kidneys may be unable to excrete excess fluids effectively.

• Measure electrolyte levels: Electrolyte imbalances (especially potassium and sodium) commonly occur with acute kidney injury, requiring frequent monitoring to guide fluid and medication management.

• Assess lung sounds: Fluid overload may cause pulmonary congestion; auscultating lung fields helps detect early signs of crackles or respiratory distress indicating worsening fluid retention.

• Daily weight: Tracking daily weights accurately reflects fluid gain or loss and helps evaluate the effectiveness of treatment in managing volume overload.

• Electrocardiogram: Abnormal potassium levels due to impaired renal excretion can cause cardiac arrhythmias, making continuous ECG monitoring essential for safety.

Rationale for Incorrect Choices

• Hypovolemia: The client is fluid overloaded, not depleted, evidenced by edema, weight gain, and no IV fluids administered overnight. Hypovolemia would present with dry mucous membranes, hypotension, and tachycardia instead.

• Hemorrhage: There is no surgical drainage or external bleeding; the dressing is intact, and hemoglobin monitoring alone wouldn’t explain the generalized edema or weight gain.

• Septic shock: The client’s temperature, heart rate, and blood pressure are stable, with no signs of infection or inflammatory response suggesting sepsis.

• Hold pressure on the surgical site: There is no active bleeding or wound oozing; applying pressure is unnecessary and unrelated to her current issue.

• Give 1,000 mL of isotonic solution IV: Additional fluids would worsen her edema and fluid overload, further stressing compromised renal function.

• Alert the rapid response team: The client is hemodynamically stable with normal vital signs, so this escalation is unwarranted at this time.

• Hemoglobin: While it can detect anemia from blood loss, hemoglobin does not monitor renal function or fluid balance progression.

• Capillary refill: This assesses peripheral perfusion and is not a reliable indicator of fluid overload or renal function status.

• Surgical site drainage: The dressing is intact with no drainage, making it a low-priority parameter for monitoring renal progress.

Rationale:
A. Rib pain with deep inspiration: Rib pain suggests possible rib fracture or contusion, which can be painful but is not immediately life threatening unless accompanied by respiratory compromise or pneumothorax. It requires monitoring but not urgent life-saving action.

B. Diminished bilateral breath sounds: Decreased breath sounds on both sides may indicate a severe chest injury such as pneumothorax, hemothorax, or respiratory failure. This finding threatens oxygenation and ventilation, requiring immediate airway management and possibly chest tube insertion.

C. Generalized abdominal tenderness: While abdominal tenderness raises concern for internal bleeding or organ injury, it does not immediately impair ventilation or perfusion. It is serious but not as acutely life threatening as compromised breath sounds.

D. Nausea with projectile vomiting: Projectile vomiting may suggest increased intracranial pressure from head trauma, but the airway and breathing take priority. Airway obstruction or hypoxia from inadequate ventilation remains the most immediate life-threatening condition.