IHD, HF and AF - prework Flashcards
Angina - aetiology/RF
- Atherosclerosis
- Coronary artery vasospasm
- Microvascular dysfunction
- Extracoronary factors - aortic stenosis, hypertrophic cardiomyopathy, significant anaemia
Symptoms of angina
- Chest pain - left sided, radiate to left arm/neck, may not be present in elderly/diabetics
- Dyspnoea - equivalent angina
- Nausea
- Lightheadedness
- Fatigue
- Precipitated by physical exertion
Investigations of angina
- ECG
- FBC, U&E, LFTs, Lipid profile, TFTs, HbA1C
- CT coronary angiogram
- Non-invasive functional imaging - looking for myocardial ischaemia (eg stress echo or myocardial perfusion scan)
- Invasive coronary angiography
Advice for angina
- Healthy diet
- Exercise - within limit of symptoms
- Stop smoking
- Optimise treatment of other co-morbidities
- Healthy weight
- Limit alcohol
- Get DVLA advice if job involves driving
- Can have GTN before sex if this precipitates it
- Treatments of ED are generally contraindicated
- Flight advice - no restriction if symptoms only occur with significant activity
Medication for angina
- Aspirin and statin for all patients
- Sublingual glyceryl trinitrate to abort angina attacks
- Beta blocker or CCB 1st line (if CCB monotherapy use diltiazem or verapamil) - if symptoms remain, titrate to max dose
- If symptomatic on monotherapy add alternative (eg beta blocker + CCB (BUT NOT BB AND VERAPAMIL)
- 3rd line - long acting nitrate, ivabradine, nicorandil or ranolazine - only add when awaiting assessment for PCI or CABG or if cannot tolerate BB or CCB add on to monotherapy
Nitrate tolerance in angina?
- Many patients who take develop tolerance and experience reduced efficacy
- If tolerance develops, take second dose of isosorbide mononitrate after 8hrs and not 12 hrs - allows levels to fall low for extra 4 hrs
Monitoring and f/u of angina
- Every 6monts-1yr depending on severity/control
- Assess CVD risk
- Check HR and BP and for signs of HF
- Review medication
- Check for ongoing symptoms
ACS RF
- Increasing age
- Male
- FH
- Smoking, diabetes, HTN, high cholesterol, obesity
Atypical symptoms of ACS
- Epigastric pain
- Fatigue
- Syncope/presyncope
Signs of ACS
- Hypotensive/hypertension
- Sweating
- Tachy/bradycardia
- Tachypnoea
- Hypoxia
Investigations ACS
- ECG
- Troponin
- Baseline bloods - FBC, U&E, LFTs, lipids and glucose
- CXR - pulmonary oedema/other causes of chest pain
- Echo - once stable to assess LV function
Medication for ACS - ALL
- Aspirin 300mg
- O2 if sats <94%
- Morphine if severe pain
- Nitrates - sublingual or IV, given if ongoing chest pain/hypertension, caution if hypotensive
Management ACS - STEMI specific
- All of ‘all’ section
- PCI if presentation within 12hrs of symptom onset and can be delivered within 120 mins thromboylysis can be given (if after 12 hrs, still consider if ongoing ischaemia)
- Dual antiplatelet therapy if PCI - prasugrel if not on any other anticoag, clopidogrel if are
- PCI - radial access need UFH + bailout glycoprotein IIb/IIIa inhibitor
- PCI - femoral access Bivalirudin with bailout GPI
- OR thrombolysis - usually with LMWH/fondaparinux
Management of ACS - NSTEMI/unstable angina specific
- All from ‘all’ criteria
- Fondaparinux if not high risk of bleeding and not having angio immediately
- If immediate angi or Crt >265 umol/L then give UFH
- Calculate GRACE score
Give PCI in:
* Immediately if unstable eg hypotnesive
* Within 72hrs if GRACE score more than 3%
* Consider in all patients if ischaemia experienced after admission
PCI drugs for NSTEMI/UA:
* UFH (regardless if given fondaparinux)
* Dual antiplatelet - prasugrel/ticagrelor if not taking another anticoag, clopidogrel if are
If no PCI:
* DAPT - ticagrelor if not high bleed risk, clopidogrel if are
Post ACS medications
- Aspirin 75mg, ACEi, aldosterone antagonist for those with HF
- Beta blocker
- Cardiac rehab
- Dual antiplatelet - ticagrelor or clopidogrel for 12 months
- S - atorvastatin 80mg