Cardiology Flashcards
What is first line treatment for heart failure?
ACEi and beta-blocker - one at a time
Do ACEi and beta-blockers have any improvement on mortality when ejection fraction is preserved?
No
What is the second-line treatment of heart failure?
Aldosterone antagonist - e.g. spironolactone
Which vaccinations should pts with heart failure receive?
Annual flu + one-off pneumococcal
How should angina be managed when they have failed to respond to a beta-blocker?
Initiation of a calcium channel blocker
What types of CCB are amlodipine, nifedipine etc.?
Long-acting dihydropyridine
What types of CCB should not be used in conjunction with beta-blockers?
Diltiazem and verapamil are rate-limiting CCBs and should not be used in combination with a beta-blocker as they can result in life-threatening bradycardia and heart failure
What can be used when a dihydropyridine CCB is contraindicated or not tolerated?
Ivabradine - as long as HR>70, and on specialist advice
or Nicorandil
If an AF patient has a TIA or stroke, what is the anticoagulant of choice?
Warfarin or a direct thrombin or factor Xa inhibitor
In acute stroke, when should anticoagulation therapy begin?
2 weeks later (later, if very large infarction)
How does aortic regurgitation present?
Diastolic murmur loudest over the aortic valve and wide pulse pressure
How does aortic stenosis present?
Systolic murmur with narrow pulse pressure
How does mitral regurgitation present?
Systolic murmur loudest over the mitral valve
How does mitral stenosis present?
Diastolic murmur but it would be loudest over the mitral valve and would not have the characteristic wide pulse pressure
How does pulmonary regurgitation present?
Diastolic murmur but it would be the loudest over the 2nd intercostal space on the left and would not have the wide pulse pressure
What is De Musset’s sign?
Head bobbing associated with AR
What are the causes of AR?
Valve issues: Rheumatic fever Infective endocarditis Connective tissue diseases e.g. RA/SLE Bicuspid aortic valve
Aortic root disease: Aortic dissection Spondylarthropathies (e.g. ank spond) HTN STS Marfan's/Ehler-Danlos syndrome
What is the difference between Janeway lesions and Oslers nodes?
Oslers nodes = painful
What are the microbial causes of IE?
Staphylococcus aureus
Streptococcus viridans
Coagulase-negative Staphylococci such as Staphylococcus epidermidis
Streptococcus bovis
What is a PESI score?
Allows calculation of PE severity, and work out which patients may be managed in an outpatient basis
What types of antibiotics can cause torsades de pointes?
Macrolides - e.g. clarithromycin
What is torsades de pointes?
A form of polymorphic ventricular tachycardia associated with a long QT interval. It may deteriorate into ventricular fibrillation and hence lead to sudden death
What are the causes of long QT syndrome?
GENETIC - LQT1 / LQT2 (potassium channel mutation); LQT3 (sodium channel mutation); Jervell and Lange-Nielsen syndrome (associated with deafness); Romano-Ward syndrome
ELECTROLYTES - Hypocalcaemia; Hypomagnesaemia; Hypokalaemia
DRUGS - Antiarrhythmics (e.g. amiodarone, sotalol); Antibiotics (e.g. erythromycin, clarithromycin, ciprofloxacin); Psychotropic drugs (e.g. serotonin reuptake inhibitors, tricyclic antidepressants, neuroleptic agents)
When should fibrinolysis be offered in STEMI patients?
Fibrinolysis should be offered within 12 hours of onset of symptoms if primary PCI cannot be delivered within 120 minutes
When can you abandon PE as a differential?
When a 2-level Well’s score =4 AND d-dimer = NEG
In whom is cardiac resynchronisation recommended?
Patients with left ventricular dysfunction, ejection fracture <35% and QRS duration >120ms
In whom is an ICD recommended?
Patients with previous sustained ventricular tachycardia, ejection fraction <35% and symptoms no worse than class III of of the New York Heart Association functional classification
What are the possible ECG features of WPW?
Short PR interval
Wide QRS complexes with a slurred upstroke - ‘delta wave’
Left axis deviation if right-sided accessory pathway, right axis deviation if left-sided accessory pathway*
What are the associations with WPW?
HOCM Mitral valve prolapse Ebstein's anomaly Thyrotoxicosis Secundum ASD
How is WPW managed?
Definitive treatment - radiofrequency ablation of the accessory pathway
Medical therapy - sotalol, amiodarone, flecainide
What is the anti-HTN of choice in T2DM?
Patients with a background of type 2 diabetes that receive a diagnosis of hypertension should be started on an ACE inhibitor (or angiotensin receptor blocker) regardless of age
What is amiodarone used in the Mx of?
Regular broad complex tachycardias without adverse features
What is adenosine used in the Mx of?
Treatment of supraventricular tachycardia (SVT). SVT would be a regular, narrow complexed tachycardia
What degree of renal impairment would make you consider stopping an ACEi initiated for HTN?
> 30% rise in creatinine
>25% reduction in eGFR
Which angina med can cause anal ulcers?
Nicorandil
What is the first line Mx of SVT?
Carotid sinus massage or Valsalva manoeuvre
What medication can be given to treat an SVT?
Adenosine - 6mg–>12mg–>12mg
Adenosine is contraindicated in asthma, verapamil is the preferable option then
What are the features of Buerger’s disease/
Extremity ischaemia - intermittent claudication and ischaemic ulcers
Superficial thrombophlebitis
Raynaud’s phenomenon
How does the CHA2DS2VS score determine anticoagulation strategy?
0 = no anticoagulation 1 = Males, consider treatment. Females = no treatment 2 = Females, consider treatment
What are the ECG features of hypokalaemia?
- U waves
- Small or absent T waves (occasionally inversion)
- Prolong PR interval
- ST depression
- Long QT
What is Mobitz type I heart block?
Progressive prolongation of the PR interval until a dropped beat occurs