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Rheumatoid Arthritis. Anila Malik GPVTS. Aims. To cover the following: What is RA? Diagnostic criteria and clinical features Rheumatoid Factor Investigations When to refer? Management of RA. Rheumatoid Arthritis.
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Rheumatoid Arthritis Anila Malik GPVTS
Aims • To cover the following: • What is RA? • Diagnostic criteria and clinical features • Rheumatoid Factor • Investigations • When to refer? • Management of RA
Rheumatoid Arthritis • Chronic systemic inflammatory disease characterised by symmetrical joint involvement. • Typically affects the small joints of the hands and the feet. • There are around 400 000 people with RA with approximately 12000 new diagnoses per year in the Uk. • Affects 3 times as many women as men. • Total costs in the Uk has been estimated between 3.8 and 4.75£ billion/year
Onset • Insidious • Acute • Palindromic
ACR RA Criteria 1987 • Morning stiffness >6/52 in and around joints lasting> 1hr/day • Arthritis of three or more joint areas involved simultaneously • Arthritis of at least one area in a wrist, MC or PIP joints • Symmetrical arthritis • Rheumatoid nodules • Positive serum RF • Radiological changes typical of RA on hand and wrist xrays
NICE Guidelines • NICE recommends clinical diagnosis of RA is more important than meeting all the criteria listed in ACR RA classification. • The rationale for this is the need to treat a persistent synovitis quickly in order to try and stop irreversible damage to joints.
When To Refer • Small joints of the hands or feet are affected • More than one joint is involved • There has been delay of 3months or longer between onset of symptoms and seeking medical advice. • Also refer persistent synovitis of undetermined cause whose bloods show normal acute phase response and negative rheumatoid factor.
Clinical Features • Poly-arthritis • Fatigue • Diffuse musculoskeletal pain • Swelling • Morning stiffness • Functional loss
Rheumatoid Factor • NICE recommends RF blood test in patients with suspected history and examination. • RFs are antibodies against the Fc portion of immunoglobulin G. • Not specific for RA • Detected in acute and chronic infections
RF • RF is positive in 60-70% of patient with RA and the reminder stay negative throughout the disease. • RF is abnormal in 5% of the normal population and up to 25% in the elderly.
Other Investigations • FBC, Inflammatory markers, Liver and renal function is required before initiating any treatment. • NICE recommends anti-cyclic citrullinated peptide (CCP) measurement in patients who are negative for RF.
Radiology • Plain Film xray: peri articular swelling, erosions, osteoporosis, cysts, subluxation joint space narrowing, ankylosis reactive sclerosis and osteophytes. • MRI and USS show inflammation of synovial membrane and erosions.
Monitoring Disease Activity • Monthly CRP and Disease Activity Score (DAS28) until treatment has controlled the disease to a pre-determined level agreed between the patient and the clinician. • DAS28 – consists of following parameters: Number of tender joints Number of swollen joints inflammatory markers (ESR or CRP) Patient’s assessment of disease activity • Cases in remission score < 2.6 and severe cases >5.1
Management • Main Goals: • Pain relief • Reduction of joint inflammation and damage • Control of systemic disease • Maintaining function and supporting • Patient education
Non Pharmacological • All patients with RA should have access to a multidisciplinary team for periodic assessment of the disease and its effect on their lives. • This includes a named specialist rheumatology nurse who is responsible for co-ordinating their care. • Patients should also have access to specialist physiotherapist, occupational therapist, podiatrist and to behavioural therapists.
Pharmacological • Combination therapy of Disease modifying anti-rheumatic drugs is the first line treatment in the newly diagnosed active RA. • Offer short-term glucocorticoids (oral intramuscular and intra-articular) to rapidly improve symptoms. • Biological therapy is recommended in case of unsuccessful trials of two DMARDs with a disease score of 5.1 on two occassions.
Analgesia • NICE recommends the following analgesia for symptom control: Paracetamol codeine compound analgesics NSAIDS/COX – 2 inhibitors (lowest effective dose for the shortest possible time. • If the above analgesics are not providing adequate pain relief then review disease modifying or biological drug regime
General Measures • Vaccination • annual influenza and one off penumococcal vaccination. • Live vaccines are contraindicated if treated with immunosuppressive agents. • Patient education and self help • ARC patient information leaflets • The National Rheumatoid Arthritis Society
Health Screening • CVS • Depression – NICE depression screening Qs • Osteoporosis • Neurology – sudden loss of function in lower limbs should prompt exclusion of cervical cord myelopathy.