What is Arrhythmogenesis?

Medical Definition of arrhythmogenic : producing or tending to produce cardiac arrhythmia Digoxin should be used with caution, since it is potentially arrhythmogenic, particularly in patients with amyloidosis.—

What are the common cardiac arrhythmias?

The main types of arrhythmia are: atrial fibrillation (AF) – this is the most common type, where the heart beats irregularly and faster than normal. supraventricular tachycardia – episodes of abnormally fast heart rate at rest. bradycardia – the heart beats more slowly than normal.

What is cardiac automaticity?

Automaticity is the property of cardiac cells to generate spontaneous action potentials. Spontaneous activity is the result of diastolic depolarization caused by a net inward current during phase 4 of the action potential, which progressively brings the membrane potential to threshold.

What is the most life threatening cardiac arrhythmia?

Most sudden cardiac deaths are caused by abnormal heart rhythms called arrhythmias. The most common life-threatening arrhythmia is ventricular fibrillation, which is an erratic, disorganized firing of impulses from the ventricles (the heart’s lower chambers).

Are arrhythmias considered heart disease?

Millions of people experience irregular or abnormal heartbeats, called arrhythmias, at some point in their lives. Most of the time, they are harmless and happen in healthy people free of heart disease.

What is automaticity and rhythmicity?

DEF. • Rhythmicity is the ability of heart to beat regularly • Automaticity is the ability of heart to generate impulses without external stimuli • Autorhythmicity is the ability of cardiac ms to generate impulses without external stimuli at regular rate. •Origin • Myogenic not neurogenic.

Can stress cause heart arrhythmia?

Stress can contribute to heart rhythm disorders (arrhythmias) such as atrial fibrillation. Some studies suggest that stress and mental health issues may cause your atrial fibrillation symptoms to worsen. High levels of stress may also be linked to other health problems.