Different modalities of treatment could be used to diagnose and determine the amount of shunting across the<unk>  septal<unk>  Maximal exercise testing can be used in<unk>  with symptoms that are discrepant with clinical findings or to document changes in oxygen saturation in<unk>  with mild or moderate pulmonary artery hypertension.
ACC AHA guidelines for evaluation of unoperated patients with atrial septal defects
ACC AHA recommendations for evaluation of the unoperated patient in atrial septal defect
ACC/AHA recommendations for evaluation of patients with unoperated patent ductus arteriosus
AHA/ACC Guideline for Aortic valve replacement
ACC/AHA recommendations for closure of patent ductus arteriosus
Acute aortic regurgitation medical therapy
Mitral valve surgery - minimally invasive
Atrial septal defect video showing percutaneous occluder devices