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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    Interpreting Blood Tests andInterpreting Blood Tests and

    InvestigationsInvestigationsMaureen CoxMaureen Cox

    http://d/Eular/0001RWUH.htmhttp://d/Eular/0002vmrh.htm
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    AIMAIM

    To explore the role of the nurse inTo explore the role of the nurse inassisting, carrying out and assessing theassisting, carrying out and assessing theresults of blood tests and investigationsresults of blood tests and investigations

    To discuss the most commonly usedTo discuss the most commonly usedinvestigations in the diagnosis ofinvestigations in the diagnosis ofrheumatological conditionsrheumatological conditions

    To explore the investigations commonlyTo explore the investigations commonlyused for the ongoing monitoring ofused for the ongoing monitoring oftherapies used in the treatment oftherapies used in the treatment of

    rheumatological conditionsrheumatological conditions To look at normal values ( and ranges) andTo look at normal values ( and ranges) and

    begin to recognise the significance of thebegin to recognise the significance of theresultsresults

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    The Nurses Role in Blood Tests andThe Nurses Role in Blood Tests and

    InvestigationsInvestigations To provide safe, informed care.To provide safe, informed care.

    To request investigations that are timely andTo request investigations that are timely and

    appropriateappropriate Support the patientSupport the patient

    Provide explanation of need for testsProvide explanation of need for tests

    Carry them out safely for both patient and nurseCarry them out safely for both patient and nurse

    Correct labelling and transportationCorrect labelling and transportation

    Interpretation of resultsInterpretation of results Action taken on abnormal valuesAction taken on abnormal values

    Explain results to patient and how this willExplain results to patient and how this willinfluence treatment.influence treatment.

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    DiagnosisDiagnosis-- Commonly used blood testsCommonly used blood tests

    Full blood countFull blood count

    Urea and electrolytesUrea and electrolytes

    Liver function testsLiver function tests

    ESRESR

    Plasma ViscosityPlasma Viscosity

    CC--Reactive ProteinReactive Protein

    Rheumatoid factorRheumatoid factor

    Anti CCPAnti CCP

    Uric acidUric acid

    CreatinineCreatinine KinaseKinase

    Antinuclear antibodiesAntinuclear antibodies

    Compliment levelsCompliment levels

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    FULL BLOOD COUNTFULL BLOOD COUNT

    This is used to monitor disease activity, to assessThis is used to monitor disease activity, to assess

    the effects of drug treatment, to exclude dietarythe effects of drug treatment, to exclude dietary

    deficiency.deficiency.

    IMPORTANT VALUES MEASUREDIMPORTANT VALUES MEASURED

    Haemoglobin (Haemoglobin (HbHb)) White cell count (WCC or WBC)White cell count (WCC or WBC)

    Neutrophils/GranulocytesNeutrophils/Granulocytes

    EosinophilsEosinophils

    PlateletsPlatelets

    Mean cell volume (MCV)Mean cell volume (MCV)

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    HAEMOGLOBIN (HAEMOGLOBIN (HbHb))

    Normal valueNormal valueMaleMale 1313 --18 g dL18 g dL--11

    FemaleFemale 11.511.5--15.5 g dL15.5 g dL--11

    LowLow haemoglobin, can be due to the increasedhaemoglobin, can be due to the increased

    disease activity.disease activity.

    A sudden fall inA sudden fall in HbHb should be checked as this canshould be checked as this can

    indicate blood loss, e.g from antiindicate blood loss, e.g from anti--inflammatory drugs.inflammatory drugs.

    CheckCheck FOBsFOBs (Faeces for occult blood)(Faeces for occult blood)

    Low HB ? Poor Nutrition. Assess function / mobilityLow HB ? Poor Nutrition. Assess function / mobility

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    WHITE CELL COUNTWHITE CELL COUNTNormal valueNormal value 44--11x1011x1099/l/lThese are the cells which gobble up infectionThese are the cells which gobble up infection

    A raised white cell countA raised white cell count is suggestive ofis suggestive of

    infection.infection.

    White cell count also is elevated when patientsWhite cell count also is elevated when patientsare on or have had steroids.are on or have had steroids.

    A low white cell countA low white cell count (below 3.5) can occur(below 3.5) can occur

    as a side effect to drug treatments.as a side effect to drug treatments.

    Patients with SLE andPatients with SLE and FeltysFeltys often have a lowoften have a lowwhite cell countwhite cell count

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    NEUTROPHILS (NEUTROPHILS (NeutsNeuts //GransGrans))

    Specific type of white cell.Specific type of white cell.Normal value 2Normal value 2 -- 7.5 x 107.5 x 1099/l (absolute value)/l (absolute value)

    Same as WCC,Same as WCC, upup with infection,steroids, alsowith infection,steroids, also

    inflammationinflammation

    Down (below 2)Down (below 2) side effect of drug treatment,side effect of drug treatment,

    SLE flare, viral infections, severe bacterialSLE flare, viral infections, severe bacterialinfectioninfection

    11 -- 1.5 no significant risk1.5 no significant risk

    0.50.5 -- 1 some increased risk1 some increased risk

    < 0.5 major risk of infection< 0.5 major risk of infection

    Also lower in some racesAlso lower in some races -- black Africansblack Africans --NegroNegroneutropaenianeutropaenia

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    EosinophilsEosinophils (EOS)(EOS)

    Another specific type of white cell.Another specific type of white cell.

    Normal value up to 0.4 (absolute value)Normal value up to 0.4 (absolute value)

    Elevation may indicate:Elevation may indicate:

    Allergy to either a drugAllergy to either a drug i.ei.e MethotrexateMethotrexate

    pneumonitis or asthma.pneumonitis or asthma. Particularly important withParticularly important with MyocrisinMyocrisin (Gold(Gold

    Injection) as may herald allergic reaction.Injection) as may herald allergic reaction.

    Seen in certain conditionsSeen in certain conditions ChurgChurg StruassStruass syndromesyndrome

    worm infestations.worm infestations.

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    PLATELETSPLATELETS

    Normal value 150Normal value 150 -- 400x10400x1099/l/l

    These are the cells which help the blood to clotThese are the cells which help the blood to clot

    Platelets often elevatedPlatelets often elevated in active diseasein active disease

    ((thrombocytosisthrombocytosis) due to inflammation.) due to inflammation.

    A low platelet countA low platelet count ( thrombocytopaenia) can( thrombocytopaenia) can

    occuroccur as a side effect of drug treatment,as a side effect of drug treatment,

    in patients with active SLE,in patients with active SLE, FeltysFeltys

    viral infectionsviral infections

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    MEAN CELL VOLUME (MCV)MEAN CELL VOLUME (MCV)

    Normal value 78Normal value 78 -- 104104Reduced MCV(104) can indicate:

    Vitamin B12 deficiencyVitamin B12 deficiency

    Folate deficiencyFolate deficiency Thyroid problemsThyroid problems

    Liver problemsLiver problems

    MarrowMarrow dysplasiadysplasia /Aplastic anaemia/Aplastic anaemia

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    FERRITINFERRITIN

    SerumSerum ferritinferritin is an acute phase protein.is an acute phase protein.It goes up with inflammation.It goes up with inflammation.

    FerritinFerritin is used as a test to check for iron deficiencyis used as a test to check for iron deficiency

    anaemia in patients with a lowanaemia in patients with a low HbHb and low MCV.and low MCV.

    In active disease aIn active disease a FerritinFerritin below 90 can indicatebelow 90 can indicateiron deficiency.iron deficiency.

    If patients are treated with iron supplements theyIf patients are treated with iron supplements theyneed to take for at least 3 months then haveneed to take for at least 3 months then have FerritinFerritin

    rechecked before stopping treatmentrechecked before stopping treatment

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    B12 and FolateB12 and Folate

    Should be measured in patients withShould be measured in patients with

    macrocytosismacrocytosis ieie elevated MCVelevated MCV

    MacrocytosisMacrocytosis seen with someseen with some DMARDsDMARDs

    especially Azathioprine, Sulphasalazine andespecially Azathioprine, Sulphasalazine and

    MethotrexateMethotrexate

    May also herald aplastic anaemiaMay also herald aplastic anaemia so dontso dontignore!!ignore!!

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    UREA AND ELECTROLYTESUREA AND ELECTROLYTES

    Blood biochemistry is used to check forBlood biochemistry is used to check for

    abnormalities in the body chemistry.abnormalities in the body chemistry.

    Abnormal renal or liver function mayAbnormal renal or liver function mayoccur as a result of organ involvement inoccur as a result of organ involvement in

    multisystem inflammatory diseases, or amultisystem inflammatory diseases, or a

    side effect of drug treatment.side effect of drug treatment.

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    LIVER FUNCTION TESTSLIVER FUNCTION TESTS

    ALTALTAlanineAlanine TransaminaseTransaminase (15(15--45)45)

    Elevated as a side effect of some drugsElevated as a side effect of some drugs

    AlcoholAlcohol

    Hepatitis and liver damageHepatitis and liver damage

    AlkalineAlkaline PhosphatasePhosphatase (up to 300)(up to 300)

    Elevated when bony activity, flare, fracturesElevated when bony activity, flare, fractures Also as side effect of drugsAlso as side effect of drugs

    MalignancyMalignancy

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    Inflammatory MarkersInflammatory Markers

    Commonly used to assess disease activityCommonly used to assess disease activity

    in RAin RA Erythrocyte sedimentation rate (ESR)Erythrocyte sedimentation rate (ESR)

    Plasma viscosity ( PV)Plasma viscosity ( PV)

    C reactive protein (CRP)C reactive protein (CRP)

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    Erythrocyte Sedimentation Rate (ESR)Erythrocyte Sedimentation Rate (ESR)

    Erythrocyte sedimentation rate measures the rateErythrocyte sedimentation rate measures the rateat which the red cells settle. The higher the valueat which the red cells settle. The higher the value

    the more inflammation. Therefore elevated in activethe more inflammation. Therefore elevated in activearthritic disorders such as Rheumatoid Arthritis,arthritic disorders such as Rheumatoid Arthritis,Lupus, vasculitis,Lupus, vasculitis, polymyalgiapolymyalgia rheumaticarheumatica

    Also malignancies.Also malignancies.

    NORMAL VALUESNORMAL VALUES

    00--10mm/hr in men aged 1810mm/hr in men aged 18--65 years65 years

    11--20mm/hr in women aged 1820mm/hr in women aged 18--65 years65 years

    Over 65 can go up by 5Over 65 can go up by 5--10mm/hr10mm/hr

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    Plasma ViscosityPlasma Viscosity

    Used in some hospitals in preference toUsed in some hospitals in preference to

    ESRESR

    Reacts in the same way as ESRReacts in the same way as ESR

    elevated with disease activity due to anelevated with disease activity due to an

    increase in protein concentration.increase in protein concentration. In same way as ESR elevated inIn same way as ESR elevated in

    malignancy andmalignancy and paraproteinuraemiasparaproteinuraemias Normal range 1.5Normal range 1.5 -- 1.72cp1.72cp

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    C REACTIVE PROTEINC REACTIVE PROTEIN

    An acute phase proteinAn acute phase protein

    This is a sensitive and quantitative measurementThis is a sensitive and quantitative measurement

    used for evaluating severity and course of anused for evaluating severity and course of an

    inflammatory processinflammatory process

    Considered more accurate than ESR by some.Considered more accurate than ESR by some.

    Normal range 0Normal range 0--8mg/l8mg/l

    NB Oral contraceptives may affect CRP levelsNB Oral contraceptives may affect CRP levels

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    RHEUMATOID FACTORRHEUMATOID FACTOR

    This test measures the presence of rheumatoidThis test measures the presence of rheumatoid

    factorfactor -- the circulating immunoglobulinthe circulating immunoglobulin IgMIgM // IgGIgG

    It is not a specific testIt is not a specific test Rheumatoid factor is positive in 4Rheumatoid factor is positive in 4--6% of population6% of population

    Can be negativeCan be negative -- SeroSero-- negative inflammatorynegative inflammatory

    disease ( AS, PSA)disease ( AS, PSA)

    Present in 70% of patients with RAPresent in 70% of patients with RA

    Highest titres found in patients with severeHighest titres found in patients with severe

    diseasedisease

    It can also be found in patients with cirrhosis,It can also be found in patients with cirrhosis,

    TB, infection and cancerTB, infection and cancer

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    RHEUMATOID FACTOR 2RHEUMATOID FACTOR 2

    Three tests:Three tests:

    RA latex fixation test >1:40 or higher isRA latex fixation test >1:40 or higher is

    significantsignificant RoseRose--WaalerWaaler Positive at titre of 1:32 or morePositive at titre of 1:32 or more

    Particle agglutination testParticle agglutination test Normal range 0Normal range 0--4040

    In all tests, antibodies cause agglutination of sheepIn all tests, antibodies cause agglutination of sheep

    red cells, bacteria or latex, which has been coatedred cells, bacteria or latex, which has been coatedwithwith IgGIgG fractionfraction

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    Anti CCPAnti CCP

    Anti CyclicAnti Cyclic CitrullinatedCitrullinated Peptide AntibodyPeptide Antibody

    Used in diagnosis of RAUsed in diagnosis of RA Used as an indicator of potential severity ofUsed as an indicator of potential severity of

    diseasedisease

    Normal Levels:Normal Levels:

    < 11 negative< 11 negative

    > 11 Positive, the higher the> 11 Positive, the higher the positivitypositivity the greater thethe greater thepotential forpotential for errosiveerrosive diseasedisease

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    SERUM URIC ACIDSERUM URIC ACID

    Uric acid produced as a byUric acid produced as a by--product ofproduct ofpurinepurine

    metabolism.metabolism.

    This is the test used if gout is suspected.This is the test used if gout is suspected.

    Normal valueNormal value MaleMale 210210--480480 umol/lumol/l

    FemaleFemale 170170--420420 umol/lumol/l

    NB Women do not get gout prior to theNB Women do not get gout prior to the

    menopause.menopause.

    Commonly seen in diuretic use.Commonly seen in diuretic use.

    Men.Men.

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    URIC ACIDURIC ACID

    In addition to this test,In addition to this test,

    aspiration of a swollenaspiration of a swollenjoint and the fluidjoint and the fluid

    looked at for uric acidlooked at for uric acid

    crystals under thecrystals under the

    microscope canmicroscope can

    confirm Gout.confirm Gout.

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    MUSCLE ENZYMESMUSCLE ENZYMES -- CreatineCreatine KinaseKinase

    (CK)(CK)

    This is an enzyme released when muscle isThis is an enzyme released when muscle is

    damaged. Often done in post MI to measure fordamaged. Often done in post MI to measure forheart muscle damage.heart muscle damage.

    It is a useful test for muscle disorders such asIt is a useful test for muscle disorders such as

    MyositisMyositis (inflammation of the muscles)(inflammation of the muscles)

    InIn MyositisMyositis the CK level is often elevated intothe CK level is often elevated into

    the 1000sthe 1000s

    (Normal 24(Normal 24--190)190)

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    ANTINUCLEAR ANTIBODIESANTINUCLEAR ANTIBODIES

    Antinuclear antibodies are found in severalAntinuclear antibodies are found in several

    rheumatic diseases. It is a useful screening testrheumatic diseases. It is a useful screening test

    for SLE, most patients with SLEfor SLE, most patients with SLEhave +ve ANA, but it is also found in RA,have +ve ANA, but it is also found in RA,

    scleroderma, juvenile arthritis and mixedscleroderma, juvenile arthritis and mixed

    connective tissue diseases.connective tissue diseases.

    This is a sensitive, but not specific test.This is a sensitive, but not specific test.Low titres can be found in 1Low titres can be found in 1 -- 5% of healthy5% of healthy

    population, titres rise with age.population, titres rise with age.

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    ANTINUCLEAR ANTIBODIES 2ANTINUCLEAR ANTIBODIES 2

    The test measures and differentiatesThe test measures and differentiates

    antinuclear antibodies.antinuclear antibodies.

    The immunoglobulinsThe immunoglobulins IgMIgM,, IgGIgG andand

    IgAIgA are the antibodies which react withare the antibodies which react withthe nuclear part of leucocytes formingthe nuclear part of leucocytes forming

    antibodies to DNA and RNA.antibodies to DNA and RNA.

    Test uses immunoflorescence to detectTest uses immunoflorescence to detect

    their presencetheir presence

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    ANTINUCLEAR ANTIBODIES 3ANTINUCLEAR ANTIBODIES 3

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    ComplementComplement C3 and C4C3 and C4

    Useful to diagnose immune complex disease.Useful to diagnose immune complex disease.

    The complement system activated byThe complement system activated by IgMIgM andand IgGIgG

    and concerned with the mediation of inflammation.and concerned with the mediation of inflammation. Once system has been activated C3 and C4 actOnce system has been activated C3 and C4 act

    as enzymes.as enzymes.

    Elevate C3 and normal C4 indicates an acuteElevate C3 and normal C4 indicates an acutephase responsephase response

    Raised or normal C4 occurs in RARaised or normal C4 occurs in RA

    Low C3 and /or C4 suggests SLE, RA or a CTDLow C3 and /or C4 suggests SLE, RA or a CTD

    Normal values C3Normal values C3 -- 0.630.63-- 1.7g/l, C41.7g/l, C4 -- 0.110.11-- 0.45g/l0.45g/l

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    RCN Conference J anuary 2009RCN Conference J anuary 2009

    TPMT AssayTPMT Assay

    1:33 individuals lack1:33 individuals lack thiopurinethiopurine ss--methyltransferasemethyltransferase(TPMT) which helps the body remove drugs such as(TPMT) which helps the body remove drugs such as

    azathioprine form the body when they are present aboveazathioprine form the body when they are present abovetherapeutic levels.therapeutic levels.

    Assessment of TPMT helps to determine if a patient isAssessment of TPMT helps to determine if a patient isgoing suffer from adverse reactions forgoing suffer from adverse reactions forThiopurineThiopurine drugsdrugs

    such as Azathioprinesuch as Azathioprine

    Individuals with no TPMT enzyme can become severely illIndividuals with no TPMT enzyme can become severely illwith normal doses ofwith normal doses ofthiopurinethiopurine drugs because toxic levelsdrugs because toxic levelsof the drug accumulate, leading to bone marrowof the drug accumulate, leading to bone marrowsuppression, a reduction in blood cell production, withsuppression, a reduction in blood cell production, withsubsequent increase in risk of infection and abnormalsubsequent increase in risk of infection and abnormalbleedingbleeding

    Ongoing Monitoring ofOngoing Monitoring of

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    Ongoing Monitoring ofOngoing Monitoring of

    rheumatological conditionsrheumatological conditions Clear evidence from randomised placeboClear evidence from randomised placebo

    controlled trials thatcontrolled trials that

    DMARDsDMARDs

    ::

    Reduce symptomsReduce symptoms

    Improve functionImprove function

    Improve global well beingImprove global well being

    Improve functionImprove function

    Improve long term outcome and survivalImprove long term outcome and survival

    Mode of action poorly understoodMode of action poorly understood All have the potential to cause adverse effectsAll have the potential to cause adverse effects

    Require safety monitoringRequire safety monitoring

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    Monitoring ofMonitoring ofDMARDsDMARDs

    AllAll DMARDsDMARDs present some risk to thepresent some risk to the

    patient, and require regular monitoring to:patient, and require regular monitoring to: Monitor disease activityMonitor disease activity

    Monitor the patients general healthMonitor the patients general health

    Detect any adverse effects occurring as a resultDetect any adverse effects occurring as a resultof the medicationof the medication

    Patients are cautioned that medication willPatients are cautioned that medication willnot be prescribed if blood monitoring is notnot be prescribed if blood monitoring is notundertaken.undertaken.

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    Current Monitoring RegimesCurrent Monitoring Regimes

    Revised Guidelines Published by BSR 2008Revised Guidelines Published by BSR 2008

    BSR WebsiteBSR Website www.rheumatology.orgwww.rheumatology.org

    At commencement of medicationAt commencement of medication FBC, U& Es,FBC, U& Es, LFTsLFTs and CPR every 2 weeks for 3 months thenand CPR every 2 weeks for 3 months then

    monthlymonthly After 6 months, if stable rheumatologist will advise 6 weekly teAfter 6 months, if stable rheumatologist will advise 6 weekly testing.sting.

    With the exception ofWith the exception ofSulphasalazineSulphasalazine which can be every 3 months.which can be every 3 months.

    If a second DMARD is prescribed in addition to anIf a second DMARD is prescribed in addition to anestablished medication, monitoring should revert to 2established medication, monitoring should revert to 2weekly for 3 months, and continue monthlyweekly for 3 months, and continue monthly

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    MethotrexateMethotrexate

    Dose 7.5 mgDose 7.5 mg 25mg WEEKLY(2.5 mg tabs)25mg WEEKLY(2.5 mg tabs)

    If oral dose is not effective or causes intoleranceIf oral dose is not effective or causes intoleranceconsider subcutaneousconsider subcutaneous

    Folic acid (5mg weekly)to be taken day afterFolic acid (5mg weekly)to be taken day after

    methotrexatemethotrexate Monthly monitoring for at least 12 months,Monthly monitoring for at least 12 months,

    decrease frequency, based on clinical judgement ifdecrease frequency, based on clinical judgement if

    disease / dose stabledisease / dose stable AlcoholAlcohol--limit within national recommendationslimit within national recommendations

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    Methotrexate (2)Methotrexate (2)

    Pulmonary toxicity (1:108 pt yrs)Pulmonary toxicity (1:108 pt yrs)

    Potentially fatal hypersensitivityPotentially fatal hypersensitivity Usually seen within 12 months of treatmentUsually seen within 12 months of treatment

    Incidence may be higher in pre existing lung diseaseIncidence may be higher in pre existing lung disease

    PregnancyPregnancy-- Adequate contraceptionAdequate contraception-- withdrawwithdraw mtxmtx for 3 monthsfor 3 months

    before conception for both men and women. Avoidbefore conception for both men and women. Avoidbreast feedingbreast feeding

    InfectionInfection--do not withdraw pre operativelydo not withdraw pre operatively

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    LeflunomideLeflunomide

    MonitoringMonitoring

    BP if>140/90 X 2 occasions 2 weeks apart, treatBP if>140/90 X 2 occasions 2 weeks apart, treathypertension before commencementhypertension before commencement

    WeightWeight --pre treatment and on each monitoring visitpre treatment and on each monitoring visit

    FBC andFBC and LFTsLFTs monthly for 6 months, then if stable, 2monthly for 6 months, then if stable, 2monthly.monthly.

    SPC states caution if used with MTX althoughSPC states caution if used with MTX although

    combination therapy is used. Monitor monthlycombination therapy is used. Monitor monthly

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    Leflunomide (2)Leflunomide (2)

    PregnancyPregnancy

    TeratogenicTeratogenic

    , requires adequate contraception., requires adequate contraception.

    Females planning conception, withdraw treatment for 2Females planning conception, withdraw treatment for 2years or use washout procedure. Avoid Breast feedingyears or use washout procedure. Avoid Breast feeding

    Men should continue adequate contraception for 3Men should continue adequate contraception for 3

    months after discontinuation of treatment.months after discontinuation of treatment.

    Alcohol limit to within national limits (4Alcohol limit to within national limits (4--8 units8 unitsweek)week)

    Treat hypertensionTreat hypertension

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    SulfasalazineSulfasalazine

    Time to response minimum 3/12Time to response minimum 3/12

    Transient reversibleTransient reversible oligospermiaoligospermia Can be prescribed in pregnancyCan be prescribed in pregnancy

    Assess risk to mother /babyAssess risk to mother /baby

    Prescribe folic acid supplement when trying toPrescribe folic acid supplement when trying toconceive and during pregnancyconceive and during pregnancy

    Small amounts excreted in breast milk, notSmall amounts excreted in breast milk, notthought to be a riskthought to be a risk

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    Sulfasalazine (2)Sulfasalazine (2)

    MonitoringMonitoring

    FBC and LFT monthly for 3 months then 3FBC and LFT monthly for 3 months then 3monthly. If following the first year, dose andmonthly. If following the first year, dose and

    blood results have been stableblood results have been stable --6 monthly for6 monthly for

    22ndnd yr of treatment. Thereafter monitoring canyr of treatment. Thereafter monitoring canbe discontinuedbe discontinued

    Pts should be asked about the presence of rashPts should be asked about the presence of rashor oral ulceration at each visitor oral ulceration at each visit

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    Other InvestigationsOther Investigations

    Plain xPlain x--raysrays

    MRIMRI

    CTCT UltrasoundUltrasound

    ThermographyThermography

    ArthrogramArthrogram

    ArthroscopyArthroscopy

    CapilliaryCapilliarymicroscopymicroscopy

    Nerve conductionNerve conduction

    studiesstudies

    Pulmonary functionPulmonary functionteststests

    BiopsyBiopsy MuscleMuscleSkinSkin

    SynovialSynovial

    Bone scansBone scansDEXADEXA

    SynovialSynovial fluid analysisfluid analysisUrine testingUrine testing StickStick

    BenceBenceJ onesJ ones

    24 hr collections24 hr collections

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    UrinalysisUrinalysis

    Routine dipstick urinalysisRoutine dipstick urinalysis should never beshould never beunderestimatedunderestimated

    Can detect: Blood, protein,Can detect: Blood, protein, bilirubinbilirubin Indicated possible infection, active disease inIndicated possible infection, active disease in

    Lupus, other organ involvementLupus, other organ involvement kidney orkidney or

    liverliver Used for drug monitoringUsed for drug monitoring Gold,Gold,

    Penicillamine,Penicillamine, cyclophoshamidecyclophoshamide, ciclosporin,, ciclosporin,biologic therapiesbiologic therapies

    Should be done routinely for all newShould be done routinely for all newadmissions/clinicadmissions/clinic attendersattenders

    Is a case for urinalysis at every visitIs a case for urinalysis at every visit

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    Urine specimens and 24hr collectionsUrine specimens and 24hr collections

    BenceBenceJ ones proteinJ ones protein A protein of lowA protein of lowmolecular weight found in the urine ofmolecular weight found in the urine of

    patients with multiplepatients with multiple myelomamyeloma, other bone, other bonetumours,tumours, amyloidosisamyloidosis andand metastaticmetastatic disease.disease.

    24 hour collection24 hour collection

    Creatinine clearanceCreatinine clearanceUrinary proteinUrinary protein

    Used to assess disease and damage, forUsed to assess disease and damage, for

    example in Lupus.example in Lupus.

    Also as a baseline prior to commencing therapyAlso as a baseline prior to commencing therapy

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    ConclusionConclusion Multiple investigations available to healthMultiple investigations available to health

    professionalprofessional

    A full history will give a preliminary diagnosis in 70%A full history will give a preliminary diagnosis in 70%

    of casesof cases

    Investigations assist us in not only diagnosis, butInvestigations assist us in not only diagnosis, but

    monitoring and assessing disease process and effectmonitoring and assessing disease process and effect

    of treatment.of treatment.

    Biomechanical measurement is only a small part ofBiomechanical measurement is only a small part of

    assessment of diseaseassessment of disease remember assessment ofremember assessment of

    pain, anxiety, depression, function, QOLpain, anxiety, depression, function, QOL