1,2] The presence of an accessory pathway (AP) between the atrial and ventricular tissue allows atrial impulses to bypass the normal conduction pathway
of the heart and depolarize the ventricles early, which produces a circuit capable of sustaining tachyarrhythmias.
In an AV nodal ablation procedure, part of the conduction pathway
in the heart is removed, which effectively prevents the impulses from the upper chamber from reaching the lower chamber.
Technological improvements that reduce impedance along the electrical conduction pathway
allow the new lead to deliver pain-blocking impulses from Medtronic's neurostimulators at lower energy levels and extend the devices' battery life by 10 percent to 40 percent at mid-range settings.
the normal conduction pathways
, with conduction back to the atria via the accessory pathway, and the QRS complex is usually narrow unless the patient has a coexisting bundle branch block.
By leveraging the superior one-dimensional (1D) transport properties of thousands of aligned, gate-controllable conduction pathways
, linear current densities exceeding that of GaAs pHEMT (gallium arsenide metamorphic high electron mobility transistor) and silicon technologies have been realized.
An ECG looks at the electrical conduction pathways
around the heart.