Cardiovascular Flashcards
Causes of:
Aortic stenosis
Aortic regurgitation
Mitral regurgitation
Mitral stenosis
Aortic stenosis - rheumatic heart disease, bicuspid valve, calcification
Aortical regurgitation - rheumatic heart disease, bicuspid valve, connective tissue disorders
Mitral regurgitation - rheumatic heart disease, calcification, connective tissue disorders
Mitral stenosis - rheumatic heart disease
or
All - rheumatic heart disease
Systolic - calcification
Aortic - bicuspid valve
Regurgitation - connective tissue disorders
Murmur investigations
Bloods: BNP, lipids
Imaging: CXR (hypertrophy), echo
Murmur management
MDT for regular follow-up
QRISK to determine whether statins, etc. are needed
Transcatheter implant
Open valve replacement: artificial/biological
Regurgitations: reduce afterload with ACEi, BB, diuretics
Heart failure causes
Myocardial (coronary artery disease, HTN)
Valvular
Pericardial (constrictive)
Arrhythmias
Non-cardiac: high output (sepsis), volume overload (CKD, nephrotic syndrome)
New York Heart Association classification for heart failure
1 - no limitation
2 - dypnoea on activity
3 - marked limitation on activity
4 - dyspnoea at rest
Ejection fraction classification for heart failure
HFpEF: >= 50% (LV unable to relax)
HFrEF: <40% (LV unable to contract properly)
Chronic heart failure investigations
Bedside - ECG
Bloods - BNP: 400-2000 (echo within 6 weeks), >2000 (echo within 2 weeks)
CXR - alveolar oedema, Kerley B lines, cardiomegaly, upper lobe diversion, pleural effusion
Chronic heart failure management
- ACE inhibitor, ARB, or beta-blocker
- Spironolactone, SGLT-2 inhibitor (e.g. dapagliflozin) or entresto if HFrEF
- Hydralazine with nitrate
Influenza and pneumococcal vaccine
Hypertension stages
Stage 1 >140/90
Stage 2 >160/100
Severe >180 or/110
Hypertension investigations
- Ambulatory BP monitoring
- Home BP monitoring
Hypertension management (age <55, not Black, T2DM)
- ACEi / ARB
- Add CCB or thiazide-like diuretic
- Triple
Hypertension management (age >55 or Black)
- CCB
- Add ACEi/ARB or thiazide-like diuretic
- Triple
What to do if hypertension resistant to initial treatment
Confirm with ABPM/HBPM
Low dose spironolactone if potassium <4.5
Alpha-blocker or beta-blocker if potassium >4.5
Seek expert advice
Infective endocarditis most common valves
Mitral (50%)
Tricuspid (IVDU)
Infective endocarditis bacteria in acute, subacute, and prosthetics
Acute - Staph. aureus
Subacute - Strep. viridans
Prosthetics - Coag. neg staph
Dukes major criteria
Positive blood cultures
Echo findings/new valvular regurgitation
Patient had scarlet fever 3 weeks ago, pathology shows verrucae, Aschoff bodies, and Anitschkov myocytes. What is the diagnosis and management?
Rheumatic fever / rheumatic heart disease
Bed rest until CRP normal for 2 weeks
NSAIDs
Phenoxymethylpenicillin
Corticosteroids if heart problems
Haloperidol or diazepam if Sydenham’s chorea
Rheumatic fever prophylaxis
IM benzathine pencillin (once a month)