Echocardiographic Asssessment: Apical 4 Chamber
- Primum ASD (size and direction of shunting)
- Inlet (size and direction of shunting, peak velocity across VSD)
- Common AV valve (morphology, balanced versus unbalanced, stenosis, regurgitation)
- Ventricles (hypertrophy, dilation, function, balanced versus unbalanced)

- Transducer placed on apical PMI (4th or 5th intercostal space)
- Midclavicular line at the apical PMI (point of maximal intensity)
- Notch at 3 o'clock