A nurse is caring for a client with multiple myeloma who is receiving chemotherapy. Which nursing intervention is most important to prevent complications related to bone destruction?

Fall prevention is critical in multiple myeloma due to bone destruction and high fracture risk. Other options (high-impact exercise, unmonitored calcium, fluid restriction) are inappropriate or harmful.

Core Nursing Explanation Key Concept Analysis: This question assesses the nurse's understanding of the pathophysiology of multiple myeloma (MM) and its most critical nursing implication. MM is a cancer of plasma cells that leads to uncontrolled proliferation in the bone marrow. This process causes osteolytic bone lesions, where bone is broken down faster than it is formed. This results in severe bone pain, hypercalcemia (from calcium released into the blood), and a dramatically increased risk of pathological fractures (fractures from minimal or no trauma). The most important nursing priority is patient safety to prevent these fractures.

Answer Rationale: Key Point! The correct answer is ③ Implement fall prevention measures and assist with ambulation. This directly addresses the primary risk from bone destruction. A fall in a patient with multiple myeloma can lead to catastrophic fractures, spinal cord compression, and prolonged disability. Nursing interventions include keeping the environment clutter-free, ensuring adequate lighting, using assistive devices (walker, cane), providing a bedside commode, and offering physical assistance during transfers and ambulation. This is a fundamental application of the nursing process, prioritizing safety based on the patient's specific pathophysiology.

Distractor Analysis:
Watch out for confusion! ① Encourage high-impact exercises to strengthen bones: This is contraindicated. High-impact activities (e.g., running, jumping) place excessive stress on weakened bones, significantly increasing fracture risk. Weight-bearing exercise may be encouraged cautiously under guidance, but high-impact is dangerous.
Watch out for confusion! ② Administer calcium supplements without monitoring serum levels: This is incorrect and potentially harmful. Patients with MM often have hypercalcemia (high serum calcium) due to bone breakdown. Giving additional calcium can exacerbate this, leading to cardiac arrhythmias, renal stones, and neurological changes. Calcium levels must be closely monitored.
Watch out for confusion! ④ Restrict fluid intake to prevent kidney overload: This is incorrect and harmful. Patients with MM are at high risk for renal failure due to light chain proteins (Bence Jones proteins) damaging the renal tubules. Adequate hydration (2-3 L/day) is a cornerstone of care to help flush these proteins and calcium from the kidneys. Fluid restriction would worsen renal function.

Related Concepts: The nursing care for multiple myeloma revolves around the "CRAB" criteria, which represent its classic clinical manifestations: Calcium elevation (hypercalcemia), Renal failure, Anemia, and Bone lesions. Nursing interventions target each of these: managing hypercalcemia with hydration and bisphosphonates, promoting renal health with fluids, managing anemia fatigue, and preventing fractures through safety measures.

Concept Summary

Concept	Key Takeaway
Multiple Myeloma Pathophysiology	Plasma cell cancer → osteolytic bone lesions → pain, hypercalcemia, fracture risk.
Priority Nursing Diagnosis	Risk for Injury related to bone fragility and potential for pathological fracture.
Core Nursing Intervention	Fall prevention, safe ambulation, environmental modification.
Contraindicated Actions	High-impact exercise, unmonitored calcium supplementation, fluid restriction.
Renal Protection	Aggressive hydration to prevent cast nephropathy from Bence Jones proteins.

Side-by-Side Comparison!

Condition	Primary Bone Issue	Key Nursing Safety Focus
Multiple Myeloma	Osteolytic Lesions (holes in bone)	Fall prevention to avoid pathological fractures.
Osteoporosis	Decreased bone density	Fall prevention, but also includes weight-bearing exercise and calcium/vitamin D supplementation.
Paget's Disease of Bone	Disorganized bone remodeling (weak, enlarged bones)	Pain management, monitoring for deformities, preventing fractures from stress.

Anatomy, Physiology & Pharmacology Points

• Pathophysiology: Malignant plasma cells in bone marrow secrete cytokines (e.g., RANKL) that overactivate osteoclasts, causing bone resorption and lytic lesions.
• Lab Values: Monitor Elevated serum calcium (>10.2 mg/dL), Elevated creatinine (renal function), Anemia (low Hgb). Presence of Bence Jones protein in urine.
• Pharmacology: Bisphosphonates (e.g., zoledronic acid) are given to inhibit osteoclast activity, strengthen bone, and reduce fracture risk and pain.

Memory Tips

• CRAB for MM symptoms: Calcium (high), Renal (problems), Anemia, Bone (pain/lesions).
• Think "Fragile Bones": The #1 nursing action is to protect them from breaking → FALL PREVENTION.
• Contraindication Mnemonic: "No HI-C" for what NOT to do: High-impact exercise, unsupervised Intake of calcium.

High-Frequency NCLEX Topics The NCLEX frequently tests the nurse's ability to identify priority interventions based on pathophysiology. For multiple myeloma, the link between bone destruction and the need for safety/fall precautions is a classic example. You may also see questions on managing hypercalcemia (IV fluids, bisphosphonates), recognizing signs of spinal cord compression (a neurological emergency from vertebral collapse), or understanding the purpose of medications like bisphosphonates.

Watch Out for Question Variations!

• Shift from "Intervention" to "Assessment": "Which finding should the nurse report immediately in a client with multiple myeloma?" → Answer: New-onset severe back pain or leg weakness (possible spinal cord compression).
• Shift to "Patient Education": "What is the most important instruction for a client with multiple myeloma?" → Answer: "Use your walker for support at all times when ambulating to prevent falls."
• Integrated with Lab Values: "A client with MM has a serum calcium level of 13 mg/dL. Which nursing action is priority?" → Answer: Initiate IV hydration as prescribed (to promote calcium excretion).

Nursing Clinical Practice Guide Clinical Scenario: Mr. Johnson, 68, is admitted for his second cycle of chemotherapy for multiple myeloma. He reports persistent, dull aching in his lower back and ribs. He is weak and fatigued. You are his primary nurse for the shift.

Nursing Intervention Strategy:

1. Assessment: Perform a thorough pain assessment (location, intensity, character). Assess for any new areas of pain or neurological changes (numbness, tingling, weakness in extremities). Review recent lab results for calcium, creatinine, and hemoglobin. Conduct a fall risk assessment using a tool like the Morse Fall Scale.
2. Planning & Implementation:
   • Safety First: Place a "High Fall Risk" sign on the door and the patient's wristband. Ensure the bed is in the lowest position with brakes locked. Keep the path to the bathroom clear and well-lit. Provide a bedside commode if he is too weak to walk to the bathroom. Assist him with all transfers and ambulation, encouraging the use of a walker.
   • Pain Management: Administer prescribed analgesics (often including opioids for breakthrough pain) on a scheduled basis to maintain comfort and mobility.
   • Hydration & Renal Care: Encourage oral fluids (2-3 L/day if not contraindicated). Monitor strict intake and output. Report a urine output of less than 30 mL/hr.
   • Monitor for Complications: Assess for signs of hypercalcemia (lethargy, confusion, nausea, polyuria, constipation) and spinal cord compression (severe back pain, leg weakness, bowel/bladder incontinence).

Patient Safety and Precautions:

• Contraindication: Do not perform range-of-motion exercises that cause pain. Avoid twisting or jarring movements.
• Medication Caution: When administering bisphosphonates (e.g., zoledronic acid), ensure the patient is well-hydrated before and after infusion to protect renal function. Monitor for acute-phase reactions (fever, myalgia) after the first dose.
• Key Monitoring: Frequent vital signs, neurological checks, pain level, and fall risk status. Monitor lab trends for calcium and renal function.

Nursing Procedure & Medication Flow Fall Prevention Protocol: 1. Identify at-risk patients upon admission (MM diagnosis = automatic high risk). 2. Educate patient and family on the reason for precautions (fragile bones). 3. Implement environmental modifications (non-slip footwear, clutter-free room). 4. Schedule frequent rounding, especially for toileting needs. 5. Use a gait belt and provide steady assistance during all ambulation.
Bisphosphonate Administration: - Administer via IV infusion over at least 15 minutes (zoledronic acid). - Ensure patient has adequate renal function (check creatinine clearance). - Pre-medicate with acetaminophen if needed for fever prophylaxis. - Encourage oral fluid intake of 500 mL before and after infusion.

A Word from Your Senior Nurse "Remember, in oncology nursing, we care for the whole person, not just the disease. For your patient with myeloma, their bones are like delicate china. Your vigilant attention to safety can prevent a life-altering fracture. When you help them to the bathroom or make sure their walker is within reach, you're not just doing a task—you're preserving their independence and quality of life. On the NCLEX and in practice, always ask yourself: 'What is the greatest immediate threat to this patient's well-being?' For MM, it's often injury from a fall. Prioritize safety, and you'll be providing excellent, thoughtful care."