Rheumatoid Arthritis Flashcards
The onset of rheumatoid arthritis is
25-55 years old
can occur at any age
Rheumatoid arthritis is more prevalent
in women
The etiology of rheumatoid arthritis is
unknown but includes
environmental, heredity, viral/bacterial infection, and rheumatoid factors
Describe the differences between osteoarthritis and rheumatoid arthritis
OA: 1. degenerative disease 2. morning stiffness lasting less than 30 minutes 3. asymmetrical 4. cartilage loss RA: 1. autoimmune disease 2. morning stiffness lasting more than 30 minutes 3. symmetrical 4. inflamed synovium
Clinical manifestations of rheumatoid arthritis include
joint involvement
TMJ- synovitis, 45-75% involvement
Nerve entrapment- carpal tunnel syndrome
Describe how rheumatoid arthritis involves joint involvement
most often affects hands, feet, and wrists
- inflammation of synovial joint membrane
- rapid division and growth of cells in the joint
- release of osteolytic enzymes, collagenases, and proteases
The atlantoaxial instability can cause
C1-C2 involvement- need to provide inline stabilization
atlanto-odontoid separation- can impinge on the spinal cord and cause neurological involvement
atlantoaxial subluxation- can decrease blood flow through vertebral arteries
The cricoarytenoid joint is
impacted in 26-86% of patients with severe RA
may see vocal cord nodules or polyps, and may see an obstruction in a fixed position
Involvement of the cricoarytenoid joint typically presents
without clinical symptoms
or may see hoarseness, pain with swallowing, stridor, or dyspnea
Systemic involvement of RA involves
pulmonary, cardiac, eyes, and muscle
Describe the pulmonary involvement of RA
pleural effusion, pneumonitis, pulmonary nodules
Describe the cardiac involvement of RA
pericarditis, pericardial effusion, mitral/aortic regurgitation, conduction defects
Describe the eye involvement of RA
destruction of lacrimal and salivary duct
Describe the muscle involvement of RA
rheumatoid myositis- muscle weakness, necrosis, and atrophy
The primary treatment of RA is
dependent on the severity of symptoms
For mild to moderate RA symptoms the treatment is
joint immobilization, rest, corticosteroids, NSAIDs
For severe RA symptoms the treatment is
surgical intervention
The classes of drugs used to treat RA include
DMARDS- disease modifying antirheumatic drugs which work to decrease the body’s immune or inflammatory properties
Non-biologic- such as methotrexate (cornerstone of tx)
Biologic- TNF inhibitors, interleukin 1 receptor agonists, anti CD 20 monoclonal antibody
The anesthetic considerations for RA include
Medications
Airway
Positioning
& spinal anesthesia
The spinal anesthesia considerations for RA include
sensory, CSF is decreased so reduce dose d/t higher spread
The positioning anesthesia considerations for RA include
padding
The medication considerations for RA include
NSAIDs- platelet dysfunction, renal & liver damage
corticosteroids- HPA axis suppression–> may need steroid supplementation
The airway considerations for RA include
TMJ can limit mouth opening
cervical spine- have inline stabilization
cricoarytenoid joint- may need smaller ETT