American College of Rheumatology Criteria for Improvement in Rheumatoid Arthritis Based on a 20 Percent Improvement in the Core Data Set (ACR20)

Purpose: To evaluate a patient with rheumatoid arthritis for response to therapy using the ACR20 criteria.

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Evaluation

Are you evaluating a patient with rheumatoid arthritis following therapy?

Yes

Core data set values before therapy

Tender joint count

Swollen joint count

Measurement along 10 cm VAS for patient's assessment of pain

Measurement along 10 cm VAS for patient's global assessment of disease activity

Measurement along 10 cm VAS for physician's global assessment of disease activity

Patient's self assessment of physical function (scaled from0 to 100)

Value of CRP

mg/L

Upper limit of normal reference range for CRP

mg/L

Core data set values after therapy

Tender joint count

Swollen joint count

Measurement along 10 cm VAS for patient's assessment of pain

Measurement along 10 cm VAS for patient's global assessment of disease activity

Measurement along 10 cm VAS for physician's global assessment of disease activity

Patient's self assessment of physical function (scaled from0 to 100)

Value of CRP

mg/L

Results

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Results Interpretation and Description References Next Steps

Data complete?

Evaluation appropriate?

Number of pretherapy variables not reflecting disease activity

Ratio of value after therapy to value before

Tender joint count

Swollen joint count

Pain assessment

Patient's global assessment

Physician' global assessment

Patient's assessment of function

Acute phase reactant (CRP)

Does the patient meet the criteria for a 20% improvement?

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Risk Factors
Clinical Diagnosis, Including Family History For Genetics
Imaging Studies
Laboratory Tests
Other Testing
Criteria For Diagnosis
Severity, Prognosis, Stage
Complications

Therapy

Prevention

Monitoring

Response To Therapy
Disease Progression
Comorbid Conditions

Specialty

Immunology/Rheumatology

Objective

response to therapy
disease progression

ICD-10

M05 - Seropositive rheumatoid arthritis
M06 - Other rheumatoid arthritis

Info

Purpose: To evaluate a patient with rheumatoid arthritis for response to therapy using the ACR20 criteria.

Specialty: Immunology/Rheumatology

Objective: response to therapy, disease progression

ICD-10: M05, M06,

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