II. Causes
- Acute Valvular Dysfunction
- Aortic Stenosis
- Acute Mitral Valve Regurgitation (i.e. acute MI with papillary Muscle rupture)
- Prosthetic Heart Valve complication (e.g. Thromboembolism, valvular obstruction)
- Hypertrophic Cardiomyopathy (esp. young patients)
- Chronic Valvular Dysfunction
- Congenital Disorders
IV. Exam
- See Heart Auscultation
- See Heart Murmur
- See Pediatric Murmur
- Precautions
- Lack of cardiac murmur has an 88% Negative Predictive Value for significant valvular disease
- Exam is otherwise unreliable in detecting valvular heart disease (compared with Echocardiography)
- Test Sensitivity: 44%
- Test Specificity: 69%
- References