Cardiology Flashcards
3 types of cardiomyopathy
- Dilated
- Hypertrophic
- Restrictive
Etiology of dilated cardiomyopathy
Idiopathic, alcoholism (thiamine deficiency), genetics, myocarditis, chemo (doxorubicin), cocaine, heroin, glue sniffing, peripartum (last trimester or within 6 mo PP)
Clinical features of dilated cardiomyopathy
- Massive enlargement of heart with all chambers dilated
- Mitral & tricuspid valve regurgitation
- L and R sided S3 and S4 sounds
- Narrow pulse pressure due to decreased stroke vol
- Arrythmias (block in bundle of His, leading to atrial and ventricular arrythmias)
- **Sudden death **
Etiology of hypertrophic cardiomyopathy
Autosomal dominant inheritance (chromo 14 missense mutation that codes for cardiac sarcomere protiens)
Clinical features of hypertrophic cardiomyopathy
- Palpitations
- Dizziness
- Angina w exercise
- SOB/DOE, CHF, arrhythmias
- Split S2, S4, harsh systolic ejection (crescendo-decrescendo) murmur best hear along lower L sternal border or apex
- Murmur best heard during valsalva
- Palpable souble apical impulse
Eitology of restrictive cardiomyopathy
- Amyloydosis, sarcoidosis
- Myocardial finrosis post open-heart surgery
- Radiation
Clinical features of restrictive cardiomyopathy
- Worsening SOB
- Progressive exercise intolerance
- Fatigue
- CHF w normal L ventricular systolic function
- Arrhythmias
- Elevated JVP
- Loud early diastolic filling sounds (S3) may be present
- Murmurs due to mitral and tricuspid regurg may be heard, but are secondary to the disease
Investigations of cardiomyopathy (all 3)
- Dilated: CBC, electrolytes, BNP, troponin, CK, CK-MB, nonspecific ST-T and Q wave changes, CXR (enlarged heart, plural effusion).
- Hypertrophic: Prominent Q wave, short PR, 2D echocardiography is diagnostic, cardiac MRI to assess severity.
- Restrictive: Normal ECG or nonsepcific ST-T wave changes, low QRS volatage, CXR mild cardiac enlargement, ventricular biopsy can determine etiology
ACS/MI
Dilated Cardiomyopathy
Hypertrophic/Obstructive Cardiomyopathy
Restrictive Cardiomyopathy
CHF (Right sided)
CHF (Left sided)
Endocarditis
Pericarditis
Rheumatic Heart Disease
Afib
Atrial flutter
Heart Block
Premature Atrial Contractions (PACs)
Premature Ventricular Contractions (PVCs)
Sinus Bradycardia
Supraventricular Tachycardia
Ventricular Fibrillation
Aortic Regurgitation
Mitral Regurgitation
Mitral Valve Prolapse
Pulmonic Regurgitation
Tricuspid Regurgitation
Aortic Stenosis
Mitral Stenosis
Pulmonic Stenosis
Tricuspid Stenosis
Hypertension
Hypertensive Crisis
Hypotension
Aortic Aneurysm
Chronic Venus Insufficiency
Gangrene
Hypovolemic Shock
Phlebitis
Raynaud Phenomenon
Stasis Dermatitis
Atherosclerosis
Coronary Microvascular Disease
Peripheral Artery Disease
Thormboangiitis Obliterans
Embolism
Thrombosis
Thrombophlebitis
Chest Injuries