A nurse is assessing a 68-year-old client diagnosed with pri… | 마이메르시 MyMerci
Adult Health
문제

A nurse is assessing a 68-year-old client diagnosed with primary open-angle glaucoma. Which assessment finding would be most concerning and require immediate intervention?

해설
Sudden severe eye pain with nausea/vomiting indicates acute angle-closure glaucoma, an ophthalmologic emergency requiring immediate intervention to prevent vision loss. Other options describe chronic or mild findings manageable with routine care.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question tests your ability to differentiate between a chronic, managed condition and an acute, sight-threatening emergency. The client has a diagnosis of Primary open-angle glaucoma (POAG), which is characterized by a slow, painless rise in intraocular pressure (IOP) and gradual loss of peripheral vision. The most concerning finding is one that indicates a completely different, acute condition: Acute angle-closure glaucoma (AACG). AACG is an ophthalmologic emergency where the iris blocks the drainage angle of the eye, causing a rapid, dramatic increase in IOP that can lead to permanent optic nerve damage and blindness within hours if not treated.

Answer Rationale: Key Point! The correct answer is ② Sudden onset of severe eye pain with nausea and vomiting. This classic triad of symptoms—severe ocular pain, nausea/vomiting, and blurred vision—is the hallmark of AACG. The sudden, severe pain is caused by the rapid spike in IOP stretching the cornea and sclera. The nausea and vomiting are autonomic nervous system responses to the intense pain and pressure. This scenario requires immediate intervention (e.g., administration of osmotic diuretics like mannitol, miotic eye drops, and preparation for an emergency laser iridotomy) to lower the pressure and save the patient's vision.

Distractor Analysis:
Watch out for confusion! ① Complaints of mild eye fatigue after reading: This is a common, non-specific complaint and is not indicative of an acute crisis in a patient with chronic POAG.
Watch out for confusion! ③ Gradual decrease in peripheral vision over the past 6 months: This is the expected clinical course of POAG itself. While it requires ongoing management and medication adjustment, it is not an acute emergency. The question asks for the finding requiring "immediate intervention."
Watch out for confusion! ④ Intraocular pressure reading of 22 mmHg on current medication regimen: A pressure of 22 mmHg is at the upper limit of normal or slightly elevated. For a patient with diagnosed glaucoma on treatment, the goal is often a "target pressure" lower than this (e.g., 18 mmHg or less). While this finding indicates the current regimen may need adjustment at the next scheduled visit, it does not represent an acute, vision-threatening emergency like the sudden symptoms in option ②.

Related Concepts: The core nursing responsibility here is triage and prioritization. You must recognize which finding represents a deviation from the patient's baseline chronic condition and signals a new, life- (or sight-) threatening problem. Always prioritize acute, severe symptoms over chronic, stable ones.

Concept Summary
ConditionPathophysiologyKey SymptomsOnset & PainNursing Priority
Primary Open-Angle Glaucoma (POAG)Drainage canal (trabecular meshwork) becomes less efficient over time. IOP rises slowly.Gradual loss of peripheral (tunnel) vision. Often asymptomatic until late stages.Chronic, insidious. Typically painless.Lifelong medication adherence, regular IOP checks, patient education.
Acute Angle-Closure Glaucoma (AACG)Iris blocks drainage angle suddenly. IOP rises rapidly.Sudden severe eye pain, nausea/vomiting, blurred vision, halos around lights, fixed mid-dilated pupil.Acute, sudden. Extremely painful.EMERGENCY. Immediate intervention to lower IOP (meds, laser) to prevent blindness.

Side-by-Side Comparison!
Assessment FindingInterpretation in a POAG PatientNursing Action Priority
Sudden severe pain + N/VKey Point! Suspect Acute Angle-Closure Glaucoma (emergency).HIGHEST. Notify provider immediately, prepare for emergency treatment.
Gradual vision changeExpected progression of chronic POAG.Moderate. Document, schedule follow-up, reinforce education on medication adherence.
Mild eye strainNon-specific, likely related to activity or presbyopia.Low. Provide comfort measures, suggest rest.
IOP of 22 mmHgIndicates inadequate control of chronic POAG.Moderate-High (but not emergent). Report to provider for possible medication adjustment at next visit.

Anatomy, Physiology & Pharmacology Points
  • Anatomy: Understand the anterior chamber angle where aqueous humor drains via the trabecular meshwork. In POAG, the angle is "open" but drainage is clogged. In AACG, the angle is physically "closed" by the iris.
  • Physiology: Normal IOP range is 10-21 mmHg. Pressure >21 mmHg is generally considered elevated and a risk factor for optic nerve damage.
  • Pharmacology (for AACG Emergency):
    • Osmotic Diuretics (Mannitol IV): Pulls fluid from the eye into the bloodstream to rapidly lower IOP.
    • Miotics (Pilocarpine eye drops): Constricts the pupil to pull the iris away from the drainage angle.
    • Beta-Blockers/Carbonic Anhydrase Inhibitors (Timolol, Acetazolamide): Reduce aqueous humor production.

Memory Tips
  • Mnemonic for AACG: "PAINful Emergency" – Pain (severe), Acute onset, IOP spike, Nausea/Vomiting.
  • Think of a Sink: POAG = Drain is slowly clogging (chronic). AACG = Someone suddenly put a lid over the drain (acute emergency).
  • Rule of Thumb: Any "sudden" symptom in an eye condition (pain, vision loss) = Think EMERGENCY until proven otherwise.

High-Frequency NCLEX Topics This is a classic NCLEX prioritization and differentiation question. The exam loves to test:
  1. Recognizing signs of an ophthalmologic emergency (AACG, retinal detachment, chemical burn).
  2. Differentiating between chronic vs. acute manifestations of the same body system.
  3. Selecting the patient that requires immediate intervention from a list of stable and unstable findings.

Watch Out for Question Variations!
  • Shift from Symptom to Intervention: "The nurse is caring for a client with sudden severe eye pain and nausea. Which intervention should the nurse prepare to administer first?" (Answer: Osmotic diuretic like Mannitol IV).
  • Shift to Patient Education: "Which statement by a client with POAG indicates a need for further teaching?" (Answer: "If my eye hurts suddenly, I'll take an extra dose of my eye drops and wait until my appointment next week." – Wrong! Sudden pain requires immediate care).
  • Mixed with Other Emergencies: You may see AACG symptoms in a "select-all-that-apply" question or as a distractor when the correct answer is another emergency like myocardial infarction (which can also cause nausea/vomiting).

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse on a medical-surgical unit. Mr. Johnson, a 68-year-old with a known history of well-controlled primary open-angle glaucoma, calls you to his room. He is clutching his right eye, visibly distressed, and says, "Nurse, my eye is killing me! It came out of nowhere, and I feel like I'm going to be sick." You notice he is diaphoretic and nauseated.

Nursing Intervention Strategy:
  1. Immediate Assessment (ABCs first): Quickly ensure airway, breathing, circulation are stable. Then focus on the eye.
    • Assess pain: Use a pain scale. This pain is typically 10/10.
    • Assess vision: Ask if vision is blurred or if he sees halos.
    • Inspect the eye: Look for a fixed, mid-dilated pupil and corneal cloudiness (hazy appearance). Do not check IOP yourself unless specifically trained and ordered; your priority is recognition and notification.
    • Vital signs: Hypertension and bradycardia can occur due to the oculocardiac reflex.
  2. Immediate Action:
    • Stay with the patient. Call for help (e.g., alert the charge nurse).
    • Notify the provider or rapid response team IMMEDIATELY. Use clear communication: "I have a patient with suspected acute angle-closure glaucoma: sudden severe eye pain, nausea, and blurred vision."
    • Keep the patient in a semi-Fowler's position to slightly lower IOP.
    • Prepare for emergency medications as ordered: Start an IV line if not present, have osmotic diuretics (mannitol) ready, and assist with administration of multiple eye drops (miotic, beta-blocker, CAI).
  3. Patient Support:
    • Provide an emesis basin and maintain safety due to nausea and potential vomiting.
    • Offer reassurance in a calm, confident manner. Explain that this is a treatable condition and you are getting him help immediately.
Patient Safety and Precautions:
  • Never administer additional doses of the patient's routine glaucoma drops (like prostaglandin analogs) for this acute pain. They are not effective for AACG.
  • Contraindication: Avoid medications that can dilate the pupil (anticholinergics, decongestants) as they can worsen the angle closure.
  • Monitoring: After emergency treatment, closely monitor vital signs, IOP (per provider), pain level, and visual acuity. Monitor for side effects of mannitol (fluid/electrolyte imbalance, pulmonary edema).

Nursing Procedure & Medication Flow Emergency Medication Administration for AACG (Typical Sequence):
  1. Mannitol 20% (IV): Given over 30-60 minutes. Use a filter needle. Monitor for signs of fluid overload (crackles, dyspnea).
  2. Pilocarpine 1-2% (Eye drops): Administered every 5-15 minutes initially to constrict the pupil. Caution: May be less effective if IOP is very high (>50 mmHg) due to iris ischemia.
  3. Timolol 0.5% (Eye drops): Beta-blocker to reduce aqueous production. Check heart rate and for history of asthma/COPD as it can cause bronchospasm.
  4. Acetazolamide (Oral or IV): Carbonic anhydrase inhibitor to reduce aqueous production. Monitor for electrolyte imbalance (hypokalemia) and paresthesias.

A Word from Your Senior Nurse "Remember, in nursing, your assessment is your superpower. A patient with a chronic condition telling you something is 'sudden' and 'the worst pain ever' is a massive red flag. Don't get tunnel vision on their existing diagnosis. Think: 'Is this their chronic condition, or is this something new and dangerous?' In this case, the nausea and vomiting are huge clues—they tell you this isn't just a headache or eye strain; it's a systemic response to extreme pressure and pain. Recognizing AACG and acting swiftly can literally save someone's sight. On the NCLEX and in practice, that ability to prioritize the acute emergency over the chronic complaint is what defines a safe, competent nurse."

핵심 개념

  • Primary Open-Angle Glaucoma — A chronic, progressive optic neuropathy characterized by a painless, gradual increase in intraocular pressure (IOP) due to impaired outflow of aqueous humor through an open anterior chamber angle, leading to peripheral vision loss.
  • Acute Angle-Closure Glaucoma — An ophthalmologic emergency where the iris blocks the trabecular meshwork drainage angle, causing a rapid, severe rise in IOP. Symptoms include sudden severe eye pain, nausea/vomiting, blurred vision, and halos. Requires immediate treatment to prevent blindness.
  • Intraocular Pressure — The fluid pressure inside the eye, measured in millimeters of mercury (mmHg). Normal range is 10-21 mmHg. Elevated IOP is a major risk factor for glaucomatous optic nerve damage.
  • Trabecular Meshwork — A spongy, sieve-like tissue located at the angle where the iris and cornea meet. It is the primary drainage pathway for aqueous humor out of the eye. Dysfunction here is central to open-angle glaucoma.
  • Laser Iridotomy — A definitive treatment for angle-closure glaucoma. A laser creates a small hole in the peripheral iris, allowing aqueous humor to bypass the blocked drainage angle and equalize pressure between the anterior and posterior chambers, preventing future attacks.

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