Validation of intracardiac shunt using thoracic bioimpedance and inert gas rebreathing in adults before and after percutaneous closure of atrial septal defect in a cardiology research unit: study protocol.
Intrathoracic shunt quantification is a main issue for applicable scientific administration of coronary heart and pulmonary illnesses. Intracardiac shunts quantified by pulmonary to systemic output ratio (Qp/Qs) are typically assessed by Doppler echocardiography, MRI or catheterisation. Recently, some authors have urged the concomitant use of thoracic bioimpedance (TB) and inert gas rebreathing (IGR) methods for shunt quantification. The objective …