The<unk>  is a semi-invasive electrocardiographic method. This technique is able to provide additional information about<unk>  atrial and<unk>  ventricular activities. Simultaneous transesophageal<unk>  of the<unk>  atrium and the<unk>  ventricle
Filtered esophageal left heart electrogram
Clinical cardiac electrophysiology
Vectorcardiography
Wireless ambulatory ECG
Electrical cardiometry
Impedance cardiography
Coronary CT calcium scan
Cardiac electrophysiology