4A. Arthritis and Gout Flashcards
Arthritis
____ of a joint, usually accompanied by pain, swelling, and stiffness, and resulting from infection,
trauma, degenerative changes, metabolic disturbances, or other causes.
inflammation
Rheumatoid Arthritis (RA) (the most \_\_\_\_ \_\_\_\_, \_\_\_\_ arthritis)
common
autoimmune
inflammatory
RHEUMATOID ARTHRITIS DEFINITION
- Progressive, ____, inflammatory disorder
- Predominantly affecting ____ membranes of diarthrodial joints; ____
- ____ manifestations occur in most
- ____ etiology
- ____ predisposed host
systemic synovial symmetric extraarticular unknown genetically
RHEUMATOID ARTHRITIS EPIDEMIOLOGY
- About ____% of total adult population affected by RA
- ____ distribution
- ____ ethnic groups
- Can occur at any ____
- Peak incidence ages ____
- Prevalence 2.5 x higher in ____
- ____ clusters
- Triggers: ____, periodontal disease?, others
1 worldwide all age 30-50 women familial smoking
Joint anatomy
This diagram can represent a knee or finger joint, it is meant to represent any joint
- at end of bones you find ____ cartilage
- lining the joint capsule, which provides structural integrity to the joint), is the ____
- thin membrane that lines capsule and extends across the bone that is within this ____ space
- provides ____ to the joint and lubricating fluid
- inflammation from RA sets in the ____
articular synovium joint lubrication synovium
Pathophysiology Cartoon
this is a knee joint:
- bones
- ____ cartilage
- joint capsule
- synovium membrane lining the capsule
- ____ (specific to the knee)
In RA there is chronic inflammation developing in ____
-hypertrophy
-hyperplasia
As the disease becomes more chronic, the synovium becomes larger and can be seen and felt in examination (called ____ At this stage)
Synovium continues bringing in inflammatory cells to the joint and can ____ the bone around it causing damage. It is ____ at this point so the objective is to prevent the dx from getting to this stage.
articular meniscus synovium pannus erode irreversible
Pathophysiology, Slide 1 genetically \_\_\_\_ host -> ? exogenous factors, ? breach in tolerance -> synovial membrane hyperplasia, \_\_\_\_ infiltration (lymphocytes, macrophages) -> \_\_\_\_ inflammation
predisposed
cellular
chronic
Pathophysiology Slide 2
chronic inflammation
->
____ production (TNF, IL1, IL6)
->
____ formation (synovial fibroblast hyperplasia)
->
structural damage of cartilage and ligaments; ____ of bone
cytokine
pannus
erosion
RA affects ____ more often.
Ppl wake up feeling stiff for more than an hour (so more common in the ____)
In hands the ____ joints are most commonly affected (where the finger attaches to the hand).
Also the ____ joing in middle of the finger.
Other common joints: ____ (30% of pts), ____ spine (important for pts being anesthetized for surgery as they are at risk of spine damage due to inflammation). Rest of the joints are listed, RA doesn’t commonly affect ____.
hands and feet mornings MCP PIP TMJ cervical lower or middle back
Rheumatoid Arthritis: Early Joint Involvement
____ region swelling in digit 2, 3 and 5. Sparing (sp?) at digit 4 Some ____ seem swollen.
Distal interphalangeal joints don’t have much swelling (doesn’t clarify which ones those are)
It will be roughly ____ in other hand
MCP
PIP
symmetrical
RA: Late Disease
Late disease looks like this.
Prolonged inflammation around MCP joints causes ____ of the digits (fingers slide off and go in the ulnar wrist direction, known as ____)
Skin appears ____ and vessels are easily seen, which is common in RA
____ in PIP joints (doesn’t clarify what that means). Nodules of inflammation in subcutaneous tissue known as ____ usually on extensor surfaces of joints
Muscles appear less ____, wasting is common since fingers are no longer functional
subluxation
ulnar deviation
thin
nodules
rheumatoid nodules
developed
Erosions
Pannus can eat away at ____ as seen in this ____ stage radiograph
Another example of the bone degradation. Top bone in image looks fine but bottom has a ____ taken out of it. Typical sign of erosion
bones
late
bite
Extraarticular Manifestations of RA
Extraarticular manifestations:
- skin ____
- rheumatoid nodules
- muscle wasting
- ____ eyes and mouth
- scleritis (inflammation of part of the eye)
- ____(inflammation of lungs)
- inflammations around heart
- ____ enlargement
- splenomegaly
- ____ from chronic inflammation
thinning dry pleural effusions lymph node anemia
Importance of Early Diagnosis
- RA is ____, not benign
- Structural damage occurs ____
- Slower progression of disease is linked to ____ treatment
- Advanced disease associated with increased morbidity and mortality
– Life expectancy shortened ____ years
progressive
early
earlier
10-15
2002 ACR Treatment Algorithm for RA
this is an algorithm for treating RA -treat the disease ____
DMARD (diesase modifying anti-rheumatic drug): tx symptoms and slows down the ____
____ also used for tx disease
____ also used
Skips without reading anything else
early
progression
NSAIDs
corticosteroids
Evolution of RA Treatment
Earl drugs include compounds with elemental ____ in them. Not used much anymore
Hydroxychloroquine (sp?) and corticosteroids initially synthesized around the 50s, sulfasalazine sp?), all still used
azathriapine is used not so much for RA but other conditions
D Penicilamin not used very frequently
____ is the standard of care for RA. Used aggressively in the 80s, only helped about ____% of pts
Biologic DMARDs (injectable and IV) target inflammatory cytokines and were developed in the 90s and 00s to supplement \_\_\_\_ DMARDs and MTX More ppl go into remission now than in the past
gold
methotrexate
50
oral
Non-steroidal Anti-inflammatory Drugs (NSAID’s)
PRO’s
- ____
- analgesic
- improve ____, Flexibility, ROM (range of motion)
- improve quality of life
CON’s
- no effect on disease ____
- frequent ____ effects (liver, renal, gut, coagulation)
antiinflammatory
mobility
progression
side
NSAIDs and Cyclo-oxygenase: Arachidonic Acid Metabolism
Mechanism of Action: Inhibit ____ which breaks down arachidonic acid to prostanoids and thromboxane
____ are the main cuprit in causing inflammation
cyclooxygenase
prostanoids
Prostanoids as Mediators of Inflammation
• Inflammatory pain (____)
– ____
– ____ (2)
• Redness (____)
– ____
– ____ (2)
• Heat (____)
– Local ____,
central Fever
– ____ (1)
• Swelling (____)
– ____, edema and leucocyte filtration and chemotaxis
– ____ (3)
dolor
nociception
PGE2 and PGI2
rubor
vasodilation
PGE2 and PGI2
calor
vasodilation
PGE2
tumor
vasodilation
PGI2, PGE2, and PGD2
NSAID MOA and Biological Effects
Antiinflammatory MOA:
1. Primary: inhibition of
biosynthesis of ____
- Secondary (depends on NSAID):
- inhibition of ____
- down-regulation of IL-1
production
- decreased production of ____ and superoxide
Uses:
- ____
- Anti-inflammatory
- ____
- drug-specific indications
prostanoids chemotaxis free radicals analgesic antipyretic