2239 results
Approach to a Positive (+) Rheumatoid Factor (RF)
(+) RF does not always = RA
Rheumatic disorders:
 •
Rheumatoid Factor (RF ... ) (+) RF does not ... Rheumatoid #Factor #RF ... rheumatology #laboratory #differential
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
arthritis SLE, , RF ... #Diagnosis #Differential
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Laboratory: • ANA, RF ... Bronchiectasis #pulmonary #differential
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Marantic (NTBE) Differential ... and hematuria, + RF
Rheumatoid Arthritis - 2020 ACR-EULAR Classification
≥ 6 of 10 points = definite RA
Joint Involvement:
): Negative RF ... Low positive RF ... High positive RF
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
- Overview and Differential ... and hematuria, + RF ... #Endocarditis #Differential
Subtypes of Serum Proteins

Pre-albumin (Transthyretin)
Albumin
Globulins
 • Alpha-1: Alpha-1 antitrypsin, Serum amyloid A, Ceruloplasmin, Corticosteroid-binding globulin (Transcortin),
IgM, IgG, IgA, RF
Rheumatoid Arthritis Summary
Overview: chronic, inflammatory symmetric polyarthritis involving small joints of hands/feet, knees, shoulders
Signs & Symptoms:
Laboratory Studies • RF ... specificity than RF
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatoid factor (RF ... antibody • ANAs RF ... specificity than the RF ... level • ANAs • RF ... myeloma) • ANA and RF
Multiple masses
The differential diagnostic list of multiple masses is very long.
The most important diagnoses are listed
Multiple masses The differential ... is difficult to differentiate ... Multiple #Massess #Differential