11 results
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Joint Fluid Analysis ... , Bacteria) by Disease ... birefringent crystals), Gout ... Septic arthritis #Diagnosis ... #Septic #Infective
Arthrocentesis of synovial fluid - Interpretation
 - Normal
 - Noninflammatory	
 - Inflammatory	
 - Septic

Viscosity of synovial
synovial fluid ... does not rule out ... #Analysis #Table ... #Aspiration #Pseudogout ... #Septic #Infective
Synovial Fluid Analysis:

Findings (COLOR	TRANSPARENCY	VISCOSITY	WBC COUNT (PER MM3)	PMN CELL COUNT (%)	GRAM STAIN	CULTURE	PCR TEST	CRYSTALS)

By Condition (Normal 
Noninflammatory 
Inflammatory:
Synovial Fluid Analysis ... nongonococcal ) #Diagnosis ... #Arthrocentesis ... #Aspiration #Pseudogout ... #Septic #Infective
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
to Joint Pain - Diagnostic ... ), RA, crystal disease ... OA *Always do arthrocentesis ... Joint #Pain #MSK #rheumatology ... #approach #workup
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Arthritis Differential Diagnosis ... and WBC >2000 in synovial ... fluid • What ... /Pseudogout) ... #MSK #rheumatology
CPPD vs Gout

== CPPD == 

Think About CPPD When:
 • Self-limited synovitis after surgery/trauma (> 65
• Underlying disease ... Fluid: • WBCs ... concomitant infection ... : Synovial Fluid ... #Comparison #rheumatology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... and culture of synovial ... fluidGout or ... urate crystals (gout ... #Rheumatology
Gout - Diagnosis and Management Summary

3 Conditions for Gout to Manifest:
1. Hyperuricemia
2. Monosodium urate deposition in
Gout - Diagnosis ... Fluid Testing: ... concomitant infection ... or arthrocentesis ... #treatment #rheumatology
Pseudogout Summary - Calcium Pyrophosphate Deposition Disease (CPPD)

Pathophysiology:
Pyrophosphate produced by chondrocytes likely precipitates with calcium to
Hypomagnesemia Synovial ... Fluid: • WBCs ... concomitant infection ... #Rheumatology # ... diagnosis #management
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
- Differential Diagnosis ... Cerebrospinal fluid ... purpura, joint & gut ... , recent viral infection ... #Rheumatology