Isochrones were displayed both during sinus rhythm and AF.Results During sinus rhythm,the atrial excitation wave front begins from sinus node spreading to right atrium(RA)and left atrium(LA).

在开胸状态下，使用自制的心外电极及信采集系统窦性心律及急性房颤心律进行心房心外，绘制等时图。