Post-ventricular atrial refractory period setting:Time:Pt:Pacemaker:Qn
post-ventricular atrial refractory period setting:time:pt:pacemaker:qn
Post-ventricular atrial refractory period setting:Time:Pt:Pacemaker:Qn
post-ventricular atrial refractory period setting:time:pt:pacemaker:qn