Mobility

Mobility

  • Definition of Mobility:

    • Mobility refers to purposeful physical movement.

    • Includes:

      • Gross simple movements

      • Fine complex movements

      • Coordination

    • Dependent on:

    • Synchronized efforts of the:

      • Musculoskeletal system

      • Nervous system

    • Adequate:

      • Oxygenation

      • Perfusion

      • Cognition

    • Requires:

    • Adequate energy and muscle strength

    • Underlying skeletal stability

    • Joint function

    • Neuromuscular coordination to carry out desired movements

What is Immobility?

  • Definition of Immobility:

    • Refers to the inability to move.

  • Impaired physical mobility:

    • A state with limitations in physical movement, not complete immobility.

    • Concerns limitations in independent, purposeful movement of the body or one or more extremities.

  • Therapeutic Immobility:

    • Sometimes immobility is therapeutic.

    • Example:

      • Shoulder dislocation: Immobility provides rest, recovery, and comfort.

Chronic Inflammation and Its Impact on Mobility

  • Recurrent or persistent inflammation lasting several weeks or longer involves:

    1. Monocytes, macrophages, and lymphocytes more prominently involved

    2. Formation of granulomas and scarring often occurs

Rheumatoid Arthritis (RA)

Pathophysiology

  • Chronic inflammation of:

    • Synovial membranes

    • Synovial hyperplasia

  • Etiology includes:

    • Remissions and exacerbations

  • Major processes involve:

    • Pannus formation

    • Cartilage erosion

    • Fibrosis

    • Ankylosis

Clinical Manifestations

  • Severity:

    • Ranges from mild to debilitating

  • Symmetry:

    • Affects symmetrical joints

  • Symptoms include:

    • Pain and stiffness

    • Redness, heat, swelling

    • Decreased mobility

Diagnostic Criteria

  • No definitive test available

  • Increased likelihood with positive findings including:

    • Erythrocyte sedimentation rate (ESR)

    • C-reactive protein (CRP)

    • Rheumatoid factor (IgG)

    • Antinuclear antibodies (ANA)

Treatment

  • Pharmacologic:

    • Medications that induce remission

  • Nonpharmacologic:

    • Rest/activity balance

    • Physical therapy

    • Splints

    • Surgery and exercises

Prostaglandins and NSAIDs

Prostaglandins

  • Definition:

    • Chemical mediators found in most body tissues assisting in regulating many body functions, including inflammatory response.

  • Formed when cellular injury occurs and exhibit various and opposing effects on different body tissues.

NSAIDs Mechanism of Action

  • Mechanism:

    • Inhibit prostaglandin synthesis in CNS and PNS

    • Inhibit COX-1 and COX-2 enzymes needed for prostaglandin production

  • Effects include:

    • Relieve pain by blocking pain impulse transmission centrally and peripherally

    • Relieve fever by decreasing hypothalamic response and resetting the body's thermostat to a lower level

    • Aspirin and nonselective NSAIDs also have an antiplatelet effect.

    • Acetaminophen is not an NSAID and lacks anti-inflammatory properties.

Salicylates: Aspirin

  • Function:

    • Act both centrally and peripherally to block pain impulses

    • Diminish inflammation and reduce fever by acting on the hypothalamus

    • Suppress platelet aggregation

  • Indications:

    • Manage ischemic stroke, TIA, angina, and acute myocardial infarction

Acetaminophen

  • Characteristics:

    • Does not cause nausea, vomiting, GI bleeding, or interfere with blood clotting

    • Equal to aspirin in analgesic and antipyretic effects but lacks anti-inflammatory activity

  • Metabolism:

    • Primarily metabolized in the liver, with a small fraction remaining as a toxic metabolite

    • Overdose can lead to liver damage or fatal liver necrosis

Acetaminophen Toxicity

  • Prevention:

    • Maximum daily dose is 4 g (4,000 mg) from all sources.

    • Overdose may be accidental or intentional.

  • Signs/Symptoms:

    • Nonspecific symptoms appearing 24 to 48 hours after overdose; may lead to jaundice, vomiting, CNS stimulation, delirium, and possibly coma/climate.

Treatment of Acetaminophen Overdose

  • If detected within 4 hours:

    • Gastric lavage and activated charcoal

    • Acetylcysteine:

    • Given orally or intravenously, most beneficial within 8 hours post-ingestion

    • Does NOT reverse damage already sustained

Nonsteroidal Anti-inflammatory Drugs (NSAIDs)

Indications for Use

  • Used in treating:

    • Inflammatory disorders, including rheumatoid arthritis, osteoarthritis, bursitis

  • Properties:

    • Provide analgesic effects for mild to moderate pain

    • Reduce fever

    • Suppress platelet aggregation

Contraindications for Use

  • Increased risk of serious GI adverse events such as:

    • Bleeding and ulceration

    • Contraindicated with peptic ulcer disease, GI bleeding disorders, abnormal kidney function, hypersensitivity to aspirin, chronic alcohol abuse, and pregnancy

Autoimmune Disorders

  • Definition:

    • Occur when the patient’s immune system does not distinguish between self and foreign cells, leading to immune responses against host tissues.

  • Inflammation is the major mechanism of tissue damage.

  • Conditions that may be treated with immunosuppressants include:

    • Allergic conditions, Crohn's disease, psoriasis, rheumatoid arthritis

Immunosuppressant Drugs

  • Functionality:

    • Interfere with function/production of immune cells to decrease undesirable immune responses

    • Aim to prevent the immune system from targeting the body’s own tissues

Drug Therapy for Immunosuppression

  • Types of Drugs Include:

    • Cytotoxic immunosuppressant agents (e.g., mycophenolate mofetil)

    • Conventional antirejection agents (e.g., cyclosporine)

    • Janus-associated kinase inhibitors (e.g., ruxolitinib)

    • Adjuvant medications, including corticosteroids and monoclonal/polyclonal antibodies

Gout

Pathophysiology

  • Gout is an inflammatory arthritis caused by the accumulation of monosodium urate crystals in joints and tissues.

  • Cause:

    • Resulting from:

    • Hyperuricemia (elevated serum uric acid levels)

    • Uric acid is normally excreted by kidneys.

    • Crystal formation triggers intense inflammatory response involving neutrophils.

Clinical Manifestations

  • Sudden, severe pain, redness, warmth, and swelling in a single joint, most commonly the first metatarsophalangeal joint.

  • Onset occurs often at night; possible triggers include dietary influences like red meat or alcohol, dehydration, or trauma.

  • Fever and malaise may also accompany acute attacks.

Diagnosis

  • Primarily clinical but can be confirmed with:

    • Joint aspiration revealing needle-shaped, negatively birefringent urate crystals

    • Elevated serum uric acid levels (typically >6.8 mg/dL)

    • Imaging techniques may identify tophi or joint erosion.

Treatment

  • Chronic Management:

    • Xanthine oxidase inhibitors (e.g., allopurinol) to lower serum uric acid levels.

    • Colchicine: Inhibits migration of white blood cells to urate crystal sites, reducing inflammation.

  • Acute Management:

    • NSAIDs, colchicine, or corticosteroids based on patient factors.

Osteoarthritis (OA)

Pathophysiology

  • OA is a degenerative joint disease characterized by the breakdown of articular cartilage.

  • Mechanism:

    • Mechanical stress plus biochemical factors lead to cartilage erosion, reducing cushioning and increasing friction.

    • Inflammatory cytokines may play a role; however, OA is seen as primarily non-inflammatory compared to RA.

Diagnostic Criteria

  • Diagnosis is clinically based but can be supported by imaging.

  • Radiographic findings:

    • Joint space narrowing, osteophyte formation, subchondral sclerosis, and cysts.

Clinical Manifestations

  • Joint pain worsening with activity and improving with rest.

  • Morning stiffness usually resolves within 30 minutes.

  • Commonly affected joints: knees, hips, hands, and spine; may develop joint deformities.

Treatment

  • Pharmacologic: Salicylates, NSAIDs, acetaminophen.

  • Nonpharmacologic: Physical therapy, weight management, low-impact exercise, and self-management programs.

Aging and Its Impact on Mobility

Manifestations of Aging

  • Common Changes Include:

    • Altered nutrition

    • Fluid/electrolyte imbalance

    • Cellular changes

    • Impaired mobility

Osteoporosis

Pathophysiology

  • Results from an imbalance in bone remodeling favoring resorption over formation.

  • Loss of bone mass can be classified as:

    • Primary and Secondary (hormonal/genetic causes).

Risk Factors

  • Include family history, loss of estrogen, aging, poor diet, smoking, sedentary lifestyle.

Clinical Manifestations

  • Loss of cancellous bone in vertebrae leading to fractures, spinal deformity, and loss of height.

Diagnosis

  • Bone density measured via DEXA scan with classifications like T scores indicating osteopenia or osteoporosis.

Prevention and Treatment

  • Dietary measures for calcium and vitamin D, weight-bearing exercise, medication adherence, and pharmacologic treatment options like bisphosphonates.

Paget's Disease

Pathophysiology

  • Characterized by disorganized bone remodeling, primarily in the skull, femur, tibia, pelvic bones, and spine.

  • Overactive osteoclasts lead to excessive bone resorption.

Clinical Manifestations

  • May be asymptomatic; symptoms include bone pain, deformities, fractures, and possible neurological complications.

Diagnosis and Treatment

  • Diagnosis based on alkaline phosphatase levels and imaging findings.

  • Treatment options: Bisphosphonates, calcitonin, calcium and vitamin D supplementation, and physical therapy.

References

  • Frandsen, G., & Pennington, S. S. (2024). Lippincott CoursePoint Enhanced for Frandsen and Pennington: Abrams' Clinical Drug Therapy (13th ed.). Wolters Kluwer Health.

  • Nath, J., & Braun, C. (2023). Lippincott CoursePoint Enhanced for Nath's Applied Pathophysiology (4th ed.). Wolters Kluwer Health.

Mobility and Bone Disorders

Understanding Mobility

  • Mobility refers to purposeful physical movement and involves:

    • Gross and fine movements

    • Coordination through the musculoskeletal and nervous systems.

    • Requires adequate energy, muscle strength, skeletal stability, joint function, and neuromuscular coordination.

Immobility

  • Immobility indicates the inability to move.

  • Considerations include:

    • Impaired physical mobility: limitations in purposeful movement without complete immobility.

    • Therapeutic immobility: may be necessary for recovery, such as after a shoulder dislocation.

Bone Disorders Overview

  1. Osteoarthritis (OA)

    • Pathophysiology: Degenerative joint disease resulting from mechanical stress and inflammatory cytokines leading to cartilage erosion.

    • Clinical Manifestations: Joint pain worsening with activity, morning stiffness, and commonly affected joints include knees and hips.

    • Treatment: Pharmacologic options include salicylates, NSAIDs, and acetaminophen; nonpharmacologic strategies encompass physical therapy and weight management.

  2. Rheumatoid Arthritis (RA)

    • Pathophysiology: Autoimmune condition characterized by chronic inflammation of synovial membranes leading to pannus formation.

    • Clinical Manifestations: Pain and stiffness in symmetrical joints, often worsened in the morning.

    • Diagnostic Criteria: Based on various laboratory findings such as elevated ESR and CRP.

    • Treatment: Includes DMARDs, non-pharmacologic interventions like physical therapy, and regular monitoring for medication side effects.

  3. Osteoporosis

    • Pathophysiology: Imbalance in bone remodeling favoring resorption over formation leading to decreased bone mass.

    • Risk Factors: Family history, aging, estrogen loss, and sedentary lifestyle.

    • Diagnosis and Prevention: DEXA scans evaluate bone density; prevention includes weight-bearing exercise and calcium supplementation.

  4. Gout

    • Pathophysiology: Caused by hyperuricemia and deposition of monosodium urate crystals triggering inflammation.

    • Clinical Management: Acute management with NSAIDs or corticosteroids; chronic treatment involves xanthine oxidase inhibitors.

  5. Paget's Disease

    • Pathophysiology: Abnormal bone turnover characterized by excessive osteoclast activity.

    • Clinical Manifestations: May be asymptomatic, but can include bone pain and deformities like bow legs.

    • Diagnosis and Treatment: Diagnosis involves alkaline phosphatase levels; treatment includes bisphosphonates.

Pharmacologic Management

  • Key Medications:

    • Bisphosphonates: Monitor renal function and patient adherence.

    • Disease-Modifying Antirheumatic Drugs (DMARDs): Assess for infection risk and adverse side effects.

  • Lab Monitoring: Routine checks for liver function tests (LFTs), CBC, and renal function to watch for side effects.

Patient Education

  • Medication Safety:

    • Educate on the safe administration practices, potential side effects, and importance of adherence.

  • Fall Prevention: Encourage exercises to strengthen bones and improve stability, along with home safety evaluations to minimize fall risks.

  • Evidence-Based Care: Apply latest research to prioritize patient problems and evaluate management outcomes effectively.

Nursing Considerations for NCLEX

  • Apply pathophysiology concepts to distinguish normal and abnormal assessments.

  • Prioritize problems based on patient assessments and evidence-based care principles.

  • Integrate clinical judgment and safe medication management, particularly with drugs affecting bone metabolism and inflammation management.