Lipids Evidence Review

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							    Lipid management




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       Primary prevention: Risk assessment
                          NICE CG 67: Lipid modification May 2008




    • Offer information about:
       – Absolute risk of Cardiovascular disease
         (CVD)
       – Absolute benefits/harms of an intervention
         over a 10-year period

    • Information should:
       – Present individualised risk/benefit
         scenarios
       – Present absolute risk of events numerically
       – Use appropriate diagrams and text
       – See patient decision aids on lipids floor of
         NPCi
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          Primary prevention: Statin therapy
                          NICE CG 67: Lipid modification May 2008



    • Offer statin therapy for adults who have a 20% or greater
      10-year risk of developing CVD
       – Use a risk calculator or clinical judgement if a risk calculator is not
         available or appropriate

    • Decision to treat should follow an informed discussion
      about risks and benefits
    • Initiate treatment with simvastatin 40mg
       – If simvastatin 40mg is contraindicated, offer a lower
         dose or alternative preparation (such as pravastatin)
       – Higher–intensity statins should not be used routinely

    • A target for total or low–density lipoprotein (LDL)
      cholesterol is not recommended
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        Secondary prevention: Statin therapy
                          NICE CG 67: Lipid modification May 2008



    • Offer statin therapy to all patients with established CVD
       – Do not delay to manage modifiable risk factors
       – Treat co morbidities and secondary causes of dyslipidaemia

    • Decision to treat should follow an informed discussion about
      risks and benefits

    • Initiate treatment with simvastatin 40mg
       – offer patients with acute coronary syndrome (ACS) a higher–
         intensity statin (see later)
       – if simvastatin 40mg is contraindicated, offer a lower
         dose or alternative preparation (such as pravastatin)


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           Secondary prevention (non-ACS):
              High doses and targets (1)
                          NICE CG 67: Lipid modification May 2008


    • ‘Consider increasing to simvastatin 80mg or a drug of
      similar efficacy and acquisition cost if a total cholesterol of
      less than 4 mmol/litre or an LDL cholesterol of less than 2
      mmol/litre is not attained’

    • ‘Any decision to offer a higher intensity statin should take
      into account the patients informed preference, co
      morbidities, multiple drug therapy, and the benefits and
      risks of treatment’
       – Note: a single cholesterol level reading may well under - or over
         estimate a patient‟s true average cholesterol level by up to 14%
       – See also next slide


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            Secondary prevention (non-ACS):
               High doses and targets (2)
                                NICE full guideline May 2008


    • ‘The use of a target figure can be helpful in guiding increases of lipid
      lowering drugs as long as it is clear that this figure is intended to
      guide treatment rather than be a figure patients are expected to
      achieve’

    • ‘An „audit‟ level of total cholesterol of 5mmol/litre should be used to
      assess progress in populations or groups of people with CVD‟

    • „The result of modelling suggest that titration using a threshold target
      of 4mmol/l total cholesterol is cost-effective so long as titration stops
      at simvastatin 80mg‟

    • „Most patients would not achieve a target of 4mmol/l total
      cholesterol and modelling suggests that it is not cost-effective to
      try to take more patients to target using higher cost statins such
      as atorvastatin’
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            What about patients with ACS?
                          NICE full guideline May 2008



    • People with acute coronary syndrome should be treated
      with a higher–intensity statin

    • “Any decision to offer a higher intensity statin should take
      into account the patient's informed preference, co
      morbidities, multiple drug therapy, and the benefits and
      risks of treatment”

    • Atorvastatin 80mg and simvastatin 80mg are both cost–
      effective in ACS

    • No lipid target specified

    • For how long should patients with ACS take higher–
      intensity statins?
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                What about ezetimibe▼? (1)
                  NICE TA 132 November 2007 (& NICE TA 094 January 2006)




    • Ezetimibe▼ monotherapy is an option for adults with
      primary (heterozygous-familial or non-familial)
      hypercholesterolaemia (at 20% or greater 10–year CVD
      risk) in whom statins are contraindicated or not tolerated

    • Ezetimibe▼, co-administered with initial statin therapy, is
      an option for patients with primary hypercholesterolaemia
      taking statins when:
       – TC or LDL „is not appropriately controlled‟ either after dose
         titration of initial statin therapy or because dose titration is limited
         by intolerance to the statin therapy
       and
       – Consideration is being given to changing from initial statin therapy
         to an alternative statin
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                What about ezetimibe▼? (2)

    But
    • Although ezetimibe▼ effectively lowers LDL levels, there is
      currently no published evidence that ezetimibe▼ alone or
      added to a statin helps patients live longer or live better
       – ENHANCE study (January 2008): no significant difference in
         carotid intima-media thickness with ezetimibe▼ versus placebo,
         added to simvastatin 80mg, in familial hypercholesterolaemia
       – SEAS study (September 2008): no significant difference in major
         CV events with ezetimibe▼+ simvastatin 40mg, versus placebo in
         patients with aortic stenosis. Hazard Ratio (HR) for new cancer
         1.55, P=0.01




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            What about other alternatives?
                        NICE CG 67: Lipid modification May 2008



                               Primary                       Secondary
                               prevention                    prevention
       Anion exchange          Consider if not able          Consider if not able
       resin                   to tolerate statins           to tolerate statins
       Fibrate                 Consider if not able          Consider if not able
                               to tolerate statins           to tolerate statins
       Nicotinic acid          Do not offer                  Consider if not able
                                                             to tolerate statins


     • The combination of an anion exchange resin, fibrate or nicotinic acid
       with a statin should not be offered for primary prevention of CVD
     • The combination of a fish oil supplement with a statin should not be
       offered for primary prevention of CVD

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                    NICE guidance compared
                  NICE CG 66 Type 2 diabetes, May 2008 and CG 67 lipids May 2008



                                CV risk assessment                Type 2 diabetes
                                and lipids (CG 67)                (CG66)

     Patients without           Simvastatin 40mg*                 Simvastatin 40mg,
     established CVD but        No lipid target                   increase to 80mg
     >20% 10–year CVD                                             unless TC <4mmol/L or
     risk                                                         LDL <2mmol/L

     Patients with              Simvastatin 40mg*,                Simvastatin 40mg,
     established CVD (no        consider increasing to            consider intensifying
     ACS) or increased          simvastatin 80mg if TC            with a „more effective‟
     albumin excretion rate     is not <4mmol/L or LDL            statin or ezetimibe▼ to
     (type 2 diabetes)          is not <2mmol/L                   achieve TC <4mmol/L
                                                                  or LDL <2mmol/L

     *Or alternative in certain circumstances – see guidance
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                   Three steps to lipid heaven

     1. Make sure you understand, and can explain to patients, the likely
        absolute benefits and risks of treatment
         • See the decision aid on this floor of NPCi, and the information
           mastery skills floor

     2. Use an evidence-based dose of an evidence-based drug and don‟t
        chase targets
         • Simvastatin 40mg is first choice drug and dose for most people
           (note exceptions e.g. interactions, patients with ACS, etc. and
           NICE guidance on when to consider increasing)
         • Lipid levels in NICE are a guide to treatment not targets
           patients are expected to achieve
         • Don‟t adjust treatment on basis of single measurements
         • Note differences in type 2 diabetes guidance
         • Only (POO) data for ezetimibe▼ are negative

     3. Support patients in continuing to take their treatment
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