Cardiovascular Flashcards
When would you initiate statins fo primary prevention of CVD?
- T1DM
- Only in type 2 if QRISK ?10%
- CKD /albuminuria
- familial hypercholesterolaemia
- > 85 y/o
When would you initiate statins for secondary prevention?
Established CVD e.g. angina, MI, stroke/TIA, PAD
When is QRISK score not suitable to use?
Score would be underestimated in high risk pts eg.
- T1DM
- established CVD
- > 85
- CKD
- familial hypercholestereolaemia
What is the cholesterol level that diagnoses hyperlipidaemia?
6mmol/L
What is the treatment pathway for primary and familial hypercholesterolaemia?
High intensity statin e.g. atorvastatin
If C/I or not tolerated= ezetimibe
Moderate triglyceridaemia if statin not tolerated/Ci = fibrate
What are the doses of atorvastatin for primary and secondary prevention
Primary: 20mg OD
Secondary: 80mg OD
What is the MHRA alert fo simvastatin 80mg?
High risk of myopathy - only give if risk of CV complications and treatment goals not achieved at lower dose
What are the 3 common side effects of statins and counselling point?
Myopathy
Myositis
rhabdomyolysis
To report any tender, weak and painful muscles
What monitoring is involved with statins
Baseline lipids
Renal function
Thyroid function
HbA1c
Creatine kinase - discontinue if 5x upper limit
Liver function- discontinue if 3x upper limit
Can statins be used in pregnancy?
No - teratogenic
- need effective contraception during and1 month after stopping
- stop taking 3 months before conception and restart after finishing breastfeeding
What increases the risk of muscle toxicity with statins?
- personal/family history of muscle disorder
- alcohol
- renal impairment
- hypothyroidism
- concomitant ezetimibe/fibrates esp gemfibrozil
- concomittant fusidic acid
- interaction with clarithromcyin and atorvastatin
What is the interaction between clarithromycin & atorvastatin?
Increases atorvastatin levels - adjust or avoid - monitor for rhabdo
would generally hold statin for abx course
What is the interaction of statins with Fusidic acid?
Increased statin levels - hold statin and re-start 7 days after last oral fusidic acid dose
Which drugs concomittantly require a maximum dose of simvastatin 20mg?
- Amlodipine
- amiodarone
- diltiazem
- verapamil
What is the max dose of atorvastatin with ciclosporin?
10mg
What is the max dose of rosuvastatin with clopidogrel?
20mg
What is ezetimibe?
Reduces cholesterol by inhibiting the absorption of cholesterol by the small intestine
Can be used as alternative or if statins not tolerated
What is the general treatment pathway of lipid lowering therapies?
Statins
Ezetimibe
Fibrates
Bile acid sequestrates / nicotinic acid
if myalgia is a risk then would you add ezetimibe?
No - consider other drugs e.g
fibrates if triglycerides are high
or bile acid sequestrants
What fibrate can you NOT use with statins due to risk of myopathy?
Gemfibrozil
When are fibrates used?
Severe hypetriglyceridaemia when >10mmol/L or cannot tolerate statin (specialist)
What is an advisory label for colestyramine (bile acid sequestrant)?
Take other medicines one hour before or 4 hours after
4 hours before colesevelam
What is the limitation of using nicotinic acid?
Flushing - prostaglandin mediated reaction - within 1 hour of dosing and lasts for 30mins esp with initial doses
What is a contraindication if nicotinic acid
peptic ulcer disease