- Patent Ductus Arteriosus
- Ductal sweep between the aortic arch and PDA
- Large PDA with left to right shunting (red flow)
- Patent Ductus Arteriosus
- Sweep between the aortic arch and pulmonary artery revealing large PDA with continuous left to right shunting by color Doppler
- Patent Ductus Arteriosus
- Ductal sweep between the aortic arch and pulmonary artery
- Small PDA with left to right shunting (red flow)
- Patent Ductus Arteriosus
- Moderate sized tortuous PDA with left to right shunting (red flow) in patient with ductal dependent pulmonary blood flow (tetralogy of Fallot with pulmonary atresia)
Echocardiographic Assessment: Suprasternal Notch/Three Finger View
- PDA diameter (2D and color Doppler)
- measurement of the 2D diameter of the PDA at its narrowest point, usually at the pulmonary end
- Direction of PDA shunting by color and spectral Doppler (left to right, right to left, bidirectional)
- PDA peak velocity
- Three Finger View
- modified view obtained by moving just out of the suprasternal notch to the first left intercostal space
- excellent at profiling size of PDA and branch pulmonary arteries
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- Probe placed in suprasternal notch
- Notch pointed towards 1 o'clock
- Tilt inferiorly and anteriorly
- The ductal or "three finger" view is a modified view obtained by moving just out of the suprasternal notch to the first left intercostal space.