Med-Surg: Chapter 20: Gout Flashcards
Risk Factors
- obesity
- hypertension
- eating large amounts of meat and seafood
- thiazide diuretics
- large quantities of alcohol
> when metabolized, purine-rich foods such as seafood, meat, and alcohol increased uric acid production
thiazide diuretics (hydrochlorothiazide) increase the net urate reabsorption in the renal tubules, therefore increasing the serum uric acid level
Gout
disease in which monosodium urate crystals are deposited into joints, bone, and soft tissues, accompanied by inflammation
- hyperuricemia, an elevated uric acid level in the blood, must be present prior to the evolution of gout
- gout attacks resolve after several days or weeks even if left untreated
- gout can become a chronic inflammatory destructive arthritis
Hyperuricemia
elevated uric acid level in blood
- results from overproduction of or diminished renal excretion of uric acid
- urate crystals are the result of an oversaturation of uric acid in the blood; the uric acid settles out of solution into soft tissues and joints; the body’s attempt to rid itself of the crystal deposits results in an inflammatory response process causing swelling, warmth, and intense pain in the affected joint
Three Phases of Gout
> Acute:
- involves one joint
- acute onset of pain, redness, and swelling
> Intercritical:
- asymptomatic period between gout attacks
- if gout left untreated, attacks may come more often, with a shortened intercritical period
> Chronic:
- repeated attacks of many years
- leads to production of tophi (uric acid deposits or nodules in the joint) and joint destruction
Podagra
term used to identify gout in the first MTP (metatarsophalangeal) joint
Typical Presentation of Gout Patients
> Subjective
- i have severe joint pain (great toe or knee)
- i think my joint is swollen
- i cannot move my joint
- my joint feels hot when i touch it
> Objective
- tenderness on palpation
- soft tissue swelling on examination accompanied by warmth and redness
- presence of tophi in the chronic gout patient
> Laboratory
- elevated serum uric acid level
- visualization of urate crystals found in synovial fluid on microscopic examination
> Radiographical
- plain radiographic findings usually normal in early gout
- erosions and soft tissue nodules may be present in chronic gout
Diagnosis
-definitive diagnosis made by observing crystals in synovial fluid or tophaceous material
Nonpharmacological Therapy
- weight management b/c obesity is a modifiable risk factor
- avoid alcoholic beverages b/c they increased uric acid production
- splinting of the affected joint useful in protecting the joint and alleviating pain
Presentation of Gout Patients: Subjective Data
- i have severe joint pain (great toe or knee)
- i think my joint is swollen
- i cannot move my joint
- my joint feels hot when i touch it
Presentation of Gout Patients: Objective
- tenderness of palpation
- soft tissue swelling on examination accompanied by warmth and redness
- presence of tophi in the chronic gout patient
Tophi
uric acid deposits or nodules in the joint
Presentation of Gout Patients: Laboratory
- elevated serum uric acid level
- visualization of urate crystals found in synovial fluid on microscopic examination
Presentation of Gout Patients: Radiographical
- plain radiograph usually normal in early gout
- erosions and soft tissue nodules may be present in chronic gout
Pharmacological Treatment
> Acute gout:
- focused on pain relief and reduction of inflammation; NSAIDs (indomethacin (Indocin)
- Colchicine (Colcrys) which decrease the buildup of uric acid crystals in the joint
- Glucocorticoids to reduce inflammation and provide pain relief
> Intercritical gout
-NSAIDs and colchicine
> chronic
-use of uric acid lowering agents (allopurinol (Zyloprim) or febuxostat (Uloric)) reduce serum uric acid by inhibiting the production or uric acid
Indomethacin (Indocin)
- NSAID
- used for acute gout
- reduction of inflammation