Rhythms that are not quite tachycardias but are faster than what is expected from a pacemakerAn electronic pulse generator that stimulates depolarization of the atria and/or the ventricles. 1. Six Second ECG Guidebook (2012), T Barill, p. 201 More site. These rhythms are called accelerated rhythms.
For example, the junctionConnects the atria to the ventricle and slows the impulse conduction speed sufficiently to allow for atrial kick; the junction consists of the AV node and the bundle of His; the junction is a supraventricular structure. 1. Six Second ECG... More usually fires at rates of 40-60/minute. A junctional rhythmA cardiac rhythm that occurs as a backup pacemaker when the sinus node fails to initiate an impulse; the junction typically fires at 40-60/minute; the P wave is either absent or inverted. A cardiac rhythm is usually named first by... More with rates of 61-100/minute is called an accelerated junctional rhythmA cardiac rhythm that originates from the AV junction with a rate of 60-100/minute; QRS complex is most often narrow with P waves that are absent or inverted; PR interval is often short. When the heart rate goes above 100/minute... More. Likewise, a ventricular rhythmA cardiac rhythm with the impulse originating in the ventricles and an absence of atrial activity (no P waves); heart rate is 20-40/minute; cardiac output is often poor with this slow rate and no atrial kick | cardiac rhythm that... More with rates of 41-100/minute is an accelerated ventricular rhythmOften refers to a discernible pattern in time or distance between QRS complexes and/or P waves. More (or an accelerated idioventricular rhythmCardiac rhythm that originates from the ventricular with a rate of 40-100/minute; QRS is wide with P waves absent. Pacemaker sites can deliver impulses faster than typically expected. For example, pacemakers within the ventricles tend to generate rates of 20-40/minute.... More).
1. Six Second ECG GuidebookA Practice Guide to Basic and 12 Lead ECG Interpretation, written by Tracy Barill, 2012 Introduction The ability to correctly interpret an electrocardiogram (ECG), be it a simple six second strip or a 12 lead ECG, is a vital skill... More (2012), T Barill, p. 116