Core Nursing Explanation
Key Concept Analysis: This question tests the priority nursing intervention for managing
Osteoarthritis (OA), a degenerative joint disease. The core pathophysiology involves the breakdown of articular cartilage, leading to pain, stiffness, and loss of function. The primary management goals are to control pain, maintain joint mobility, and prevent disability. While rest is important during acute inflammation, prolonged inactivity is detrimental as it leads to
joint stiffness and
muscle atrophy, which worsen pain and functional decline.
Answer Rationale:
Key Point! The correct answer is to teach gentle
Range-of-motion (ROM) exercises. This intervention directly addresses the twin goals of pain management and functional maintenance. Regular, gentle movement helps:
1.
Lubricate the joint (synovial fluid circulation), reducing stiffness.
2.
Preserve muscle strength to support and stabilize the joint.
3.
Prevent contractures and maintain functional independence.
This is a cornerstone of non-pharmacological management for OA, supported by Evidence-Based Nursing (EBN) guidelines.
Distractor Analysis:
Watch out for confusion! Option ① (Encourage complete bed rest) is harmful. While short-term rest during a severe flare-up is appropriate, prolonged immobility accelerates joint stiffness, muscle weakness, and functional loss, contradicting the goal of maintaining joint function.
Option ③ (Apply ice packs for 30 minutes every hour) is incorrect due to improper application time. Ice therapy is useful for acute inflammation or post-exercise pain, but the recommended duration is typically 15-20 minutes at a time. Applying ice for 30 minutes every hour risks cold-induced tissue injury (frostbite, nerve damage).
Option ④ (Advise OTC NSAIDs without consulting) is dangerous due to the lack of assessment. The nurse must first assess the client's renal function, history of GI bleeding, and current medications (e.g., anticoagulants) before recommending NSAIDs (Nonsteroidal Anti-inflammatory Drugs). Unsupervised use can lead to serious adverse effects like gastrointestinal bleeding or acute kidney injury.
Related Concepts: OA management is multimodal. It includes weight management (to reduce joint stress), proper use of heat/cold therapy, assistive devices (e.g., cane), pharmacological management (acetaminophen, NSAIDs, topical agents), and eventually joint replacement surgery for advanced disease. The nurse's role is to educate and empower the client for long-term self-management.
Concept Summary
| Concept | Key Points for Osteoarthritis (OA) |
|---|
| Pathophysiology | Progressive degeneration of articular cartilage. Inflammation is secondary. "Wear and tear" disease. |
| Primary Symptoms | Joint pain (worsens with activity, improves with rest), morning stiffness ( 1 hour) |
| Systemic Symptoms | Usually absent | Present (fatigue, fever, weight loss) |
| Priority Intervention | Exercise to maintain function | Rest during acute flares, then exercise |
Anatomy, Physiology & Pharmacology Points
Joint Anatomy: OA primarily affects the articular cartilage, the smooth cushion at the end of bones. Its breakdown leads to bone-on-bone friction.
Exercise Physiology: Movement stimulates the production of synovial fluid, which nourishes cartilage and acts as a lubricant.
Pharmacology: NSAIDs work by inhibiting the cyclooxygenase (COX) enzyme, reducing prostaglandin production (pain and inflammation mediators). Must assess for Key Point! GI and renal risks.
Memory Tips
OA Exercise Mantra: "Motion is Lotion." Gentle movement keeps joints fluid.
OA vs. RA Stiffness: "OA: Off quickly. RA: Rest a while." OA stiffness eases in