Drugs Used to Treat Musculoskeletal Disorders

Overview of Musculoskeletal Disorders

  • Skeletal System Components: Comprises bones, cartilages, ligaments, and connective tissues.

  • Common Disorders: Includes fetal conditions like cerebral palsy, multiple sclerosis, and gout.

  • Stroke Syndrome: Sudden onset of symptoms such as vertigo, numbness, and aphasia.

Nursing Assessment

Key Assessment Areas

  • Current History:

    • Reason for treatment and degree of impairment.

    • Pain level and analgesics usage.

    • Muscle spasticity extent and affected muscle groups.

  • Patient History:

    • Details on diagnoses causing impairment and any additional injuries.

  • Medication History:

    • Review any medications being taken by the patient.

  • Additional Factors:

    • Activity and exercise levels, assistance required for ADLs, and use of assistive devices.

    • Monitor sleep, nutrition, and perform a physical examination.

    • Review laboratory diagnostics and reports.

Respiratory Function Monitoring

  • Post-Adverse Effect Monitoring: Monitor respiratory functions after neuromuscular blockers administration for at least 48 hours:

    • Assess swallowing capability, cough reflex, and vital signs.

    • Watch for signs of hypoxia or hypercapnia (tachycardia, hypotension, cyanosis).

    • Have necessary resuscitation equipment available during monitoring.

Nursing Interventions for Musculoskeletal Disorders

General Interventions

  • Adapt Self-Care: Tailor interventions based on individual patient needs.

  • Medication Administration: Ensure prescribed medications are given timely.

  • Thermal Application: Teach about using heat/cold therapy effectively.

  • Promote Activity: Encourage range-of-motion exercises and maintain prescribed activity levels.

  • Rest and Sleep: Support patient needs for rest and sleep.

Interventions for Neuromuscular Blockers

  • Usage Context: Usually given to improve conditions during surgery or mechanical ventilation; patient must be intubated.

  • Respiratory Support: Monitor for respiratory distress and assist with breathing exercises.

  • Pain Management: Provide pain relief options since patients cannot communicate discomfort.

  • Drug Interactions: Caution regarding certain antibiotics that may potentiate neuromuscular blockers.

Drug Classes and Their Functions

1. Centrally Acting Skeletal Muscle Relaxants

  • Functionality: Acts by CNS depression; used alongside physical therapy and rest.

  • Common Adverse Effects: Sedation, weakness, and GI issues.

  • Serious Adverse Effects: Hepatotoxicity; blood dyscrasias.

  • Example: Baclofen (Lioresal) for spasticity in conditions such as MS or spinal cord injuries.

2. Direct-Acting Skeletal Muscle Relaxants

  • Drug: Dantrolene (Dantrium).

  • Action: Generalized weakness; controls spasticity in chronic disorders.

  • Common Adverse Effects: Weakness and dizziness.

3. Neuromuscular Blocking Agents

  • Action: Interrupt nerve impulse transmission at neuromuscular junctions. Used in anesthesia and for intubation.

  • Common Adverse Effects: Increased salivation, discomfort in neck or back regions.

  • Serious Adverse Effects: Signs of respiratory distress; need for airway management in case of overdose.

Gout Management Medications

1. Colchicine

  • Action: Interrupts urate crystal deposition.

  • Use: Prevent/relieve acute gout attacks; effective within 12-72 hours.

  • Adverse Effects: Nausea, vomiting, diarrhea; blood dyscrasias.

2. Probenecid

  • Action: Enhances uric acid excretion.

  • Use: Treats hyperuricemia and chronic gout.

  • Adverse Effects: Acute gout attacks; nausea; skin reactions.

3. Xanthine Oxidase Inhibitors

  • Use: Treats primary hyperuricemia in gout.

  • Common Adverse Effects: Nausea, dizziness, headache, hepatotoxicity.

4. Uric Acid Reabsorption Inhibitor - Lesinurad

  • Action: Inhibits renal urate reabsorption.

  • Use: Combined with xanthine oxidase inhibitors for hyperuricemia treatment.

  • Adverse Effects: Gout attacks; gastrointestinal issues; increased renal markers.

Conclusion

  • Effective management of musculoskeletal disorders involves comprehensive assessment, tailored nursing interventions, and mindful use of pharmacological therapies.

  • Patient Education: Importance of understanding medication purpose, side effects, and adherence to therapy.