The main diagnostic modalities of ASD are ECG, chest X-ray and echocardiogram.
The findings are listed below.
ECG findings in ASD
- There is right axis deviation in ECG. Axis may be deviated to left in ostium primum defet.
- Right bundle branch block (RBBB)
Chest X-ray findings in ASD
Chest X-ray will show
- Enlarged right atria and right ventricle
- Prominence of main pulmonary artery
- Pulmonary plethora
Echocardiograpy in ASD
Echocardiography shows the definitive features of ASD
- Right ventricular dilatation
- Paradoxical septal motion
2D- echo with Doppler is the confirmatory diagnostic test
Transesophageal echo: Useful in ambiguous transthoracic Echo.
Cardiac catheterisatiom in ASD is done in case of
- Coronary artery disease
- Valvular heart disease
- Pulmonary artery hypertension.
