Cardiac Catheterization for Confirmed ASD Secundum

Indications and Contraindications

The American College of Cardiology recommends that diagnostic cardiac catheterization is not routinely indicated for patients with confirmed ASD secundum by TEE, provided noninvasive imaging adequately estimates pulmonary artery pressures and shunt magnitude, with a Class III recommendation 1, 2
Diagnostic cardiac catheterization is not indicated in younger patients with uncomplicated ASD secundum where imaging results are adequate, with a Class III recommendation from the American Heart Association 3

If TEE with bubble study has already provided clear defect size and morphology, evidence of right ventricular volume overload, adequate estimation of pulmonary artery pressures, and assessment of shunt magnitude, then proceed directly to closure planning without diagnostic catheterization, as recommended by the American College of Cardiology 1, 2
Diagnostic catheterization is necessary in specific clinical scenarios, including discrepant or inconclusive noninvasive imaging data, suspected pulmonary arterial hypertension, older adults (>40 years), and risk factors for coronary artery disease, according to the American College of Cardiology 1, 2

For symptomatic patients with shortness of breath, focus on key questions before deciding on catheterization, including whether the TEE clearly shows right ventricular volume overload, if pulmonary artery pressures are elevated, if the patient is older (>40 years), and if there is exercise-induced desaturation, as recommended by the American College of Cardiology 1, 2

If planning percutaneous device closure, cardiac catheterization will be performed at the time of the procedure itself, which is standard practice for device deployment, balloon sizing, and hemodynamic confirmation, according to the American College of Cardiology 1, 2

The American College of Cardiology explicitly states that routine diagnostic catheterization is not indicated when noninvasive imaging is adequate (Class III), and adults over 40 with ASD often have acquired left ventricular diastolic dysfunction that can cause paradoxical worsening after closure, highlighting the importance of catheterization in these patients 1, 2, 3