A 45-year-old patient with a pituitary adenoma undergoes sur… | 마이메르시 MyMerci
Adult Health
문제
A 45-year-old patient with a pituitary adenoma undergoes surgical resection via transsphenoidal approach. Which nursing intervention should be the priority in the immediate postoperative period?
1Monitor for signs of cerebrospinal fluid leak and maintain head of bed elevation at 30 degrees.✓ 정답
2Assess cranial nerve function every 4 hours and document findings
3Administer prescribed antiemetics for nausea and vomiting
4Encourage deep breathing exercises and early ambulation
해설
CSF leak is a priority after retrosigmoid acoustic neuroma resection due to risk of meningitis. Head elevation reduces intracranial pressure. Other interventions are secondary.
심화 해설
Core Nursing ExplanationKey Concept Analysis: This question assesses priority nursing care following Transsphenoidal hypophysectomy (surgical removal of a pituitary tumor through the sphenoid sinus). The transsphenoidal approach involves operating through the nose or upper gum to reach the pituitary gland at the base of the brain, creating a potential communication between the subarachnoid space (containing cerebrospinal fluid, CSF) and the nasal sinuses. The most critical, life-threatening complication in the immediate postoperative period is a Cerebrospinal fluid (CSF) leak, which can lead to Meningitis.
Answer Rationale: Key Point! The priority intervention is to Monitor for signs of CSF leak and maintain head elevation. A CSF leak presents as clear, watery drainage from the nose (Rhinorrhea) or drainage at the back of the throat with a salty or metallic taste. The "halo" or "ring" sign (a clear ring around bloody drainage on a gauze pad) is a classic indicator. Elevating the head of the bed (HOB) to 30 degrees helps reduce intracranial pressure (ICP) and promotes venous drainage from the head, which can decrease the flow of CSF and facilitate healing of the surgical site.
Distractor Analysis: Watch out for confusion! While all options are relevant postoperative cares, they are not the immediate priority.
• Option ② (Assess cranial nerves): Important for detecting damage to the optic (II) or oculomotor (III, IV, VI) nerves, but is typically done as part of routine neurological checks, not as the singular highest priority for preventing a catastrophic infection.
• Option ③ (Administer antiemetics): Nausea and vomiting can increase intracranial pressure and strain the surgical site, so management is important. However, it is a supportive measure, not the primary surveillance for the most dangerous complication.
• Option ④ (Encourage deep breathing/ambulation): This is a standard postoperative measure to prevent atelectasis and DVT (Deep Vein Thrombosis), but is contraindicated or deferred in the immediate postoperative period after this surgery. Patients are often kept on bed rest with HOB elevated to prevent CSF leak and hemorrhage.
Related Concepts: Other key postoperative assessments include monitoring for Diabetes insipidus (DI) (excessive dilute urine output and thirst due to decreased ADH) and Syndrome of Inappropriate Antidiuretic Hormone (SIADH) (fluid retention, hyponatremia). Monitoring strict intake and output (I&O) and serum sodium levels is crucial.
Concept Summary
• Primary Complication: CSF leak → Risk of meningitis.
• Key Assessment: Clear nasal drainage, halo sign, headache, salty taste in throat.
• Key Intervention: HOB elevated 30°, instruct patient to avoid coughing, sneezing, straining, bending, or blowing nose.
• Other Monitoring: Neurological status (vision, cranial nerves), fluid balance (for DI/SIADH), and nasal packing care.
Side-by-Side Comparison!
Complication
Pathophysiology
Key Signs/Symptoms
Cerebrospinal Fluid (CSF) Leak
Breach in dura mater from surgical site, allowing CSF to drain into nasal sinuses.
Deficiency of Antidiuretic Hormone (ADH) from posterior pituitary injury.
Polyuria (>200-250 mL/hr), polydipsia, low urine specific gravity (
임상 시나리오
Nursing Clinical Practice GuideClinical Scenario: You are caring for Mr. Johnson, 45, on the neurosurgical unit 6 hours after a transsphenoidal hypophysectomy for a non-functioning pituitary adenoma. He has nasal packing in place, an IV running, and is on bed rest with the HOB at 30 degrees.
Nursing Intervention Strategy:
1. Assessment: Every 1-2 hours initially, assess the nasal drip pad for amount and character of drainage. Test any clear drainage for glucose using a glucometer strip (CSF contains glucose, while normal mucus does not). Monitor for frequent swallowing, which may indicate posterior drainage. Perform full neurological assessments per protocol, including level of consciousness (LOC), pupillary response, visual acuity/fields, and extraocular movements (cranial nerves II, III, IV, VI). Monitor vital signs for fever (sign of infection) and tachycardia/hypotension (signs of hemorrhage or DI). Strictly measure intake and output hourly; report urine output >200 mL/hr for 2 consecutive hours.
2. Nursing Care: Maintain HOB elevation as ordered. Provide mouth care frequently, as the patient will be mouth-breathing. Administer stool softeners to prevent straining during bowel movements. If the patient needs to sneeze, instruct to do so with an open mouth to avoid increasing nasal pressure. Administer analgesics as ordered for headache (often from CSF pressure changes).
3. Patient Education & Safety: Educate the patient pre- and post-op on the critical restrictions: No bending, lifting (>5-10 lbs), straining, blowing nose, or sneezing with a closed mouth for 4-6 weeks. Use a soft toothbrush to avoid gum irritation. Report any clear nasal drainage, severe headache, fever, or increased thirst/urination immediately.
Nursing Procedure & Medication Flow
• CSF Leak Test: If clear drainage is noted, collect a drop on a clean gauze pad. If it is CSF mixed with blood, a halo sign (a yellowish ring surrounding a central blood stain) will appear as it dries. You may also test the fluid with a glucose reagent strip; a positive reading suggests CSF.
• Medication Administration: If Diabetes Insipidus is confirmed, Desmopressin (DDAVP) may be given intranasally, orally, or IV. Monitor for water intoxication and hyponatremia as side effects. If adrenal insufficiency is a concern, administer corticosteroids (e.g., hydrocortisone) on a strict schedule; never abruptly stop these medications.
A Word from Your Senior Nurse
"Neurosurgical patients require some of the most vigilant monitoring. After a transsphenoidal surgery, your eyes and assessment skills are the primary tools to prevent meningitis. That clear drip from the nose isn't just allergies—it's a potential gateway for bacteria to the brain. And remember, patient teaching is power. Empowering your patient with the knowledge of what not to do (like bending to tie their shoes) is just as critical as any medication you administer. In the NCLEX and in practice, always think: 'What is the one thing that, if missed, could cause the most harm right now?' For this patient, it's the CSF leak."
핵심 개념
Transsphenoidal Hypophysectomy — A surgical procedure to remove a pituitary tumor through an incision in the sphenoid sinus (often via the nose or upper gum), avoiding a craniotomy.
Cerebrospinal Fluid (CSF) Leak — The escape of cerebrospinal fluid from the subarachnoid space, often through a dural tear, presenting as clear rhinorrhea. A major complication after transsphenoidal surgery due to risk of meningitis.
Halo Sign — A clinical sign where a ring of clearer fluid (CSF) surrounds a central stain of blood on bedding or gauze, indicative of a CSF leak.
Diabetes Insipidus — A condition of polyuria and polydipsia caused by a deficiency of Antidiuretic Hormone (ADH), a common transient complication after pituitary surgery due to posterior lobe manipulation or edema.
Syndrome of Inappropriate Antidiuretic Hormone — A condition of hyponatremia and fluid retention caused by excessive, unregulated release of ADH, which can also occur after pituitary or hypothalamic surgery.
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