Timing
Timing
Systolic - (Regurgitant and Ejection)
Diastolic - (Proto and Mid-diastolic)
Continuous
The table shows salient features and etiology of cardiac murmurs. More than one type of murmur may be present in the same child.
| Type | Features | Diagnosis |
| Regurgitant | S1 muffled Murmur ends before A2 |
Mitral regurgitation Ventricular septal defect |
| Ejection | S1 normal, murmur may extend past A2 eg: severe pulmonic stenosis |
Pulmonic or aortic valvar stenosis |
| Proto-diastolic | Murmur begins with S2 Decrescendo | Aortic/pulmonic valvar regurgitation |
| Mid-diastolic | Low frequency | Large ventricular and atrial septal defect. Mitral stenosis and Mitral regurgitation |
| Continuous | Murmurs which begin with S1 and extend past A2 in diastole | Patent ductus arteriosus |