| The gradual prolongation of the AH interval is a feature that rarely occurs in accessory pathway conduction. |
| In first degree block there is a delay in conduction of the atrial impulse to the ventricles, usually at the level of the atrioventricular node. |
| A 29-year-old woman was admitted to the hospital with complete atrioventricular conduction block and severe congestive heart failure. |
| In some patients the atrioventricular node allows retrograde conduction of ventricular impulses to the atria. |
| The alkaloid also acts on the myocardium to depress conduction and irritability, as well as to prolong the myocardial refractory period. |
| The audiogram measures air conduction and bone conduction and presents them graphically across the hearing frequencies. |
