direct recording of auriculograms from the right atrium and indirect recording of the left auriculograms through the coronary sinus and pulmonary artery , show the different auricular activation pathways in common atrial flutter , atrial tachycardia and in case of retrograde atrial depolarization ( via the av node , septal or parietal accessory pathway ) .
C0225844
right atrium
C0456944
coronary sinus