MTB 2 CK - Rheumatology Flashcards
Deposits of urate crystals with foreign body reaction. From longstanding gout
Composition of Tophi
Arthrocentesis (esp. to rule out infectious pathology)
Most accurate diagnostic test for gout
Acetaminophen (if not controlled, use NSAIDs like aspirin)
Best initial treatment for Osteoarthritis
Used in Acute attack in pts. resistant to NSAIDs or those with c/i to NSAIDs (renal insufficiency)
Corticosteroid role in management of gout
Used in patients with c/i to both NSAIDs and Steroids in acute attack; Chronic management to prevent second attack
Colchicine role in management of Gout
Used for chronic management (Febuxostat also acts via xanthine oxidase inhibition)
Allopurinol role in management of gout
Rarely used in chronic management (inc. secretion in kidneys)
Probenecid role in management of gout
Losartan (ARB) -also lowers uric acid; STOP thiazides
Rx for Hypertension in gout patient
Diarrhea, Neutropenia
Colchicine toxicity
Stevens-Johnson rash»_space; Toxic epidermal necrolysis
Allopurinol major toxicity
Hemochromatosis and HyperPTHism; minor: DM, Hypothyroidism, Wilson’s (calcium salts deposition in articular cartilage)
Risk factors for Pseudogout
CPPD disease (rhomboid shaped crystals)
Athrocentesis revealing positively birefringent crystals in ________________ disease
Gout (needle shaped crystals)
Athrocentesis revealing negatively birifringent crystals in _______________ disease
Aspirin (NOT Acetaminophen -its inflammatory disease)
Best initial drug for CPPD disease
Dissolves uric acid (useful in gout)
Pegloticase mechanism of action
S aurues epidural abscess
Signs of Cord compression with high fever and elevated ESR in _____________ pathology
Suspect cord compression (neurologic emergency)
Management of Pt. with a hx of cancer presenting with sudden onset neurologic deficit (sensory level)
Point tenderness over vertebra
Sensitive Clinical sign of Cord compression
disk herniation -50% chance only (can be present for other reasons too)
Pain upon Straight leg raise clinical significance
Disk herniation excluded -high sensitivity (negative PPV)
No pain upon straight leg raise clinical significance
L5
Dorsiflexion of toe affected in ___________ nerve root compression
L4
Dorsiflexion of foot affected in ____________ nerve root compression
S1
Eversion of foot affected in ______________ nerve root compression
Do not image (unless serious pathology suspected)
Best initial test for uncomplicated back pain
CXR
Best initial test for back pain with compression or infection suspected
MRI (do CT myelogram if MRI is contraindicated -pacemaker)
Most accurate test for back pain with compression or infection suspected
Do MRI if accompanied by neuro deficits (isolated SLT pain is 50% of times not herniation)
MRI indications in case of pain upon straight leg raise
Steroids for decompression; chemo/radiation for tumor -surgical decompression if fails
Rx for Cord compression
Steroids to control acute neurologic deficits, Vancomycin/Linezolid until sensitivity is found; then switch to oxacillin/nafcillin + Gentamicin»_space; surgical drainage if resistant
Initial treatment for Epidural abscess
NSAIDs with ordinary mobility»_space; Steroid injection (resistant)»_space; Surgery (rarely needed)
Treatment for Disk herniation
PAD (vascular studies and physical findings are normal)
Important diseases to rule out in suspected spinal stenosis
Person > 60yrs, pain while walking radiating to buttocks and thighs b/l, worse on extending back/walking downhill, relieve in cycling/bending
Spinal Stenosis clinical picture
MRI
Most accurate test to diagnose Spinal Stenosis
Weight loss, pain meds, Steroid injections, PT/exercise»_space; Surgical dilation of spinal canal in 75%
Spinal Stenosis Management
Young woman, chronic generalized MS pain and tenderness with trigger points
Fibromyalgia clinical picture
amitriptyline and Milnacipran (SNRI specifically for Fibromyalgia)
Best initial treatment for Fibromyalgia
Pregnancy, Diabetes, RA, Acromegaly, Amyloidosis, Hypothyroidism
Systemic disease that can cause Carpal Tunnel Syndrome
Electomyography, Nerve Conduction Testing
Most accurate diagnostic test for Carpal Tunnel Syndrome
Wrist splints, avoidance»_space; Steroid injections and surgically cutting the flexor retinaculum in resistant cases
Best initial therapy for Carpal Tunnel Syndrome
NSAIDs, rest and physical therapy
Best initial therapy for Rotator Cuff tear
Complete tear, failure to respond to NSAIDs, steroids and physical therapy
Surgery indications for rotator cuff tears
Anterior knee pain at patella that is worse just after starting to walk after prolonged sitting
Patellofemoral Syndrome clinical picture
Trauma, imbalance of quadriceps strength, meniscal tear
Causes of Patellofemoral Syndrome
NO indication (nothing to fix)
Surgical indications of Patellofemoral syndrome
Plantar fasciitis (tarsal tunnel pain worsens)
Pain of _________________ (Tarsal tunnel syndrome/Plantar Fasciitis) improves with use
Very severe pain at the calcaneus with point tenderness
Plantar fasciitis clinical picture
Collagenase injection, Triamcinolone
Rx for Dupuytren Contracture
RA
Episcleritis is a feature of _____________ chronic inflammatory disease
C1 and C2 (leading to subluxation)
Vertebral joint commonly affected in RA
Joint involvement (up to 5), ESR/CRP (1), >6 wks (1), RF/CCP (1) (6 points = RA)
Factors for point-based diagnoses of RA
Coronary artery disease (due to vasculitis)
Most common cause of death due to RA
Felty Syndrome
RA with splenomegaly and neutropenia in _____________ syndrome
Caplan Syndrome
RA with pneumoconiosis and lung nodules in _______________ syndrome
Erosive disease (joint space narrowing, physical deformities, X ray abnormalities)
Methotrexate indications in RA
As a combination with MTX as initial DMARDS, Disease unresponsive to MTX
TNF-inhibitors indications in RA
PPD skin test
Labs to accompany TNF-inhibitor therapy
When NSAIDs do not control symptoms; while DMARDs take effect (Steroids do not halt progression)
Steroids indications in RA
Lung, LIver and marrow toxicity
MTX major toxicity
Retinal damage (do dilated eye exam)
Hydroxychloroquine major toxicity
Infection (anti-CD20 antibody -useful in Hodgkins and in RA)
Rituximab major toxicity
JRA (joint symptoms are relatively mild)
High fever of unknown origin in a young person accompanied with salmon colored truncal rash. Likely diagnoses is ______________
Positive ANA, or any of: Anti-dsDNA, Anti-Sm, VDRL, Positive LE cell prep)
Immunologic labs that form SLE diagnostic criteria
None (no deformation -just pain brings pt. to physician)
Xray findings in SLE arthritis
ANA (sensitive -negatives are not false )
Diagnostic test for SLE with high NPV
Anti-dsDNA, Anti-Sm (specific -positives are not false)
Diagnostic test for SLE with high PPV
Correlate with disease activity (drop with exacerbations); Dec. C3
Complement levels in SLE
Dec. complement, rise in Anti -dsDNA
Acute SLE flareup diagnostic labs
mildly chronic disease limited to skin and joint
Hydroxychloroquine indications for SLE
Bolus prep used in acute flare ups, Nephrotic disease
Steroids indication in SLE
Belimumab
SLE drug that controls progression
Steroids, alone or in combination with Cyclophosphamide and Mycophenolate
Rx for Lupus nephritis
Lupus anticoagulant and Anticardiolipin antibodies
2 main types of anti-phospholipid antibodies
high APTT, normal PT, normal INR
Clotting profile in Antiphospholipid syndrome
Anti-cardiolipin
_________________ antibodies are associated with spontaneous abortion in Antiphospholipid sydnrome
Lupus anticoagulant
_________________ antibodies are associated with arterial/venous thromboses in Antiphospholipid sydnrome
Mixing studies
Best initial test for Antiphospholipid syndrome with clotting abnormality
Russel viper venom test (RVVT) prolonged
Most specific test for lupus anticoagulant
Cannot stop an imminent abortion; heparin and aspirin for recurrence
Rx for abortion due to Antiphospholipid syndrome
Large-mouthed diverticuli
Intestinal manifestations of Systemic sclerosis
Sudden hypertensive crisis
Renal manifestations of systemic sclerosis
high PPV (specific but not sensitive -present only in 30%)
Role of anti-Scl70 positivity in systemic sclerosis diagnostics
ANA (high NPV but non specific)
Most sensitive test for Systemic sclerosis
Dermatomyositis (of ovary, lung, GI and Lymphoma)
_______________ (Dermatomyositis/polymyositis) is associated with cancer
CPK and aldolase
Best initial test for Dermatomyositis/polymyositis
Often associated with lung fibrosis
Anti-Jo antibody positivity clinical significance
Primary biliary cirrhosis
Hepatobilliary condition associated with Sjogren’s
Lymphoma (up to 10%)
Most dangerous complication of Sjogren’s
Schirmer test (filter paper against the eye)
Best initial test for Sjogren’s
Lip or parotid gland biopsy showing lymphoid infiltration
Most accurate test for Sjogren’s
SS-A and SS-B (also present in SLE -sensitivity also only 65%)
Best initial blood test for Sjogren’s
NO findings (always spares the lungs)
PFT findings in PAN
Foot drop (also stroke in a young person)
Most common neurologic abnormality in PAN
Biopsy of symptomatic site
Most accurate test for PAN
Beading/abnormal dilation of renal, mesenteric or hepatic artery
Angiography findings in PAN
Normal CPK and aldolase in PMR
Test to differentiate polymyositis/dermatomyositis from Polymyalgia rheumatica
Anti-proteinase-3 (c-ANCA; Anti-myeloperoxidase associated with Churg Strauss)
Wegener’s is associated with positive _________________ (Anti-proteinase-3 Ab/Anti-myeloperoxidase Ab)
Unresolving pneumonia not better with Antibiotics
Clinical picture of Wegener’s lung involvement
Churg Struass Syndrome (also has asthma)
Eosinophillia is most strongly associated with _______________ vasculitis
Leukocytoclastic vasculitis
Biopsy findings in HSP
None (IgA levels not reliable) -clinical diagnoses + biopsy
Lab findings to diagnose HSP
Cryoglobulins (Cryoglobunemia)
chronic HCV infection is associated with increased _________ Ig levels
Joint pain, Glomerulonephritis, Purpuric lesions, neuropathy
Cryoglobulinemia clinical findings
Treat underlying HCV with interferon/Ribavirin (steroids NOT effective)
Rx for Cryoglobulinemia
Cold Agglutinins (cause hemolytic anemia in EBV, mycoplasma, lymphoma)
IgM associated with EBV infection
Pathergy -Sterile skin pustules from minor trauma (needlestick)
Characterstic Behcet Syndrome skin lesions
Behcet Syndrome (also can have ocular, joint and CNS lesions)
Oral and Genital ulcers; Erythema nodosum like lesions on the skin. Likely diagnoses
Men
Characteristic clinical picture of seronegative spondyloarthropathy
Early Ankylosing Spondylitis
Backache and stiffness in young man that improves with activity and worsens with rest. Likely diagnoses
Xray of Sacroiliac joint showing space narrowing
Best initial test for Ankylosing spondylitis
MRI
Most accurate test for ankylosing spondilitis
Ankylosing spondylitis (causing bamboo spine)
Bridging syndesmophytes over vertebral bodies seen in ________________ disease
Sausage digits (from enthesopathy), Nail pitting, Xray showing pencil-in-a-cup deformity of DIP
Findings in psoriatic arthritis
Xray of DIP
Best initial test for psoriatic arthritis
NSAIDs»_space; MTX»_space; Anti-TNF
Rx Treatment order for Psoriatic arthritis
No specific test. Rule out Reactive arthritis and look for underlying cause (IBS, Chlamydia infection, GI infection)
Best initial test for Reactive arthritis
Bone Densitometry (DEXA)
Most Accurate test for Osteoporosis
T-score between 1 to 2.5 SD lower than normal
Osteopenia diagnostic criteria
T-score below 2.5 SD lower than normal
Osteoporosis diagnostic criteria
Prosthetic joint > RA > OA
Risk factors for Septic arthritis
Ceftriaxone and Vancomycin
Best Initial therapy for Septic arthritis
Oxacillin, Nafcillin (beta-lactam sensitive), Linezolid, Daptomycin (resistant)
Therapy for Septic arthritis with culture showing S aureus
Removal first, Antibiotic for 6-8 wks, replacement
Management of Infected prosthetic joints
Accompanied by rash and tenosynovitis, and with polyarticular involvement
Distinct presentation of arthritis caused by Gonorrhea
Culture multiple sites -pharynx, rectum, urethra, cervix as well as joint and blood
Gonococcal arthritis diagnostics
Third gen cephalosporin (ceftriaxone, cefotaxime, ceftizoxime); Fluroquinolones if determined sensitive
Rx for Gonococcal arthritis
Complement levels for MAC
Lab diagnostics for recurrent gonorrhea
Vascular insufficiency, DM, SCD (Salmonella)
Risk factors for Osteomyelitis
Contiguous (from nearby foot ucler in DM, for eg)
Route of infection to bone is most commonly __________________ in adults
Hematogenous
Route of infection is most commonly _______________ in adults
Warmth, redness and swelling in the area that takes weeks to develop, with/without draining ulcer
Clinical picture of Osteomyelitis
X ray; if normal, MRI
Best initial test for Osteomyelitis
Biopsy (also imp. to know sensitivity)
Most accurate test for osteomyelitis
None (obtain culture on biopsy first and treat acc. to sensitivity -takes wks. to develop)
Emperic therapy for osteomyelitis