electrocardiography, the atrial action potential are action potentials that occur in the heart atrium. They are similar to ventricular action potential with the exception...

intercalated discs which allow the action potential to pass from one cell to the next. This means that all atrial cells can contract together, and then...

An action potential occurs when the membrane potential of a specific cell rapidly rises and falls. This depolarization then causes adjacent locations...

pacemaker potential or current which drives rhythmic modulation of firing rate. Some pacemaker action generate rhythms for the heart beat (sino-atrial node)...

Atrial fibrillation (AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of...

cells are less equipped to contract compared to the atrial and ventricular cells. Action potentials pass from one cardiac cell to the next through pores...

atrial cells) into pacemaker cells. This is achieved by making the cells express a gene which creates a pacemaker current. Pacemaker action potential...

that are used to suppress abnormally fast rhythms (tachycardias), such as atrial fibrillation, supraventricular tachycardia and ventricular tachycardia....

atrium is roughly cube-shaped except for an ear-shaped projection called an atrial appendage, previously known as an auricle. All animals with a closed circulatory...

producing a wave of electrical impulses that stimulates atrial contraction by creating an action potential across myocardium cells. Impulses of the wave are...

the rapid phase 0 depolarisation spike in the ventricular and atrial action potential can fire once, but will inactivate rapidly and become inexcitable...

electrophysiology, the threshold potential is the critical level to which a membrane potential must be depolarized to initiate an action potential. In neuroscience,...

and prevent blood clots and to prevent stroke in people with nonvalvular atrial fibrillation through directly inhibiting factor Xa. Specifically, it is...

clinical evidence with in silico modeling to reconstruct the atrial and ventricular action potential and evaluate the likelihood for early afterdepolarization...

Premature atrial contractions (PACs) Wandering atrial pacemaker Atrial tachycardia Multifocal atrial tachycardia Supraventricular tachycardia (SVT) Atrial flutter...

recent-onset atrial fibrillation and atrial flutter. Class IV drugs are calcium (Ca) channel blockers. They work by inhibiting the action potential of the SA...

cardiac abnormalities, including: Cardiac rhythm disturbances (such as atrial fibrillation and ventricular tachycardia), Inadequate coronary artery blood...

therapeutic response in which a prolonged action potential increases myocytes’ cardiac refractoriness in case of atrial fibrillation and flutter. Ibutilide...

ventricular fibrillation (VF), and wide complex tachycardia, as well as atrial fibrillation and paroxysmal supraventricular tachycardia. Evidence in cardiac...

tachycardia include: Adrenergic storm Anaemia Anxiety Atrial fibrillation Atrial flutter Atrial tachycardia Atrioventricular reentrant tachycardia AV...

fast response action potentials. They either do not change the action potential duration, or they may decrease the action potential duration. Class Ib drugs...

prone to the occurrence of atrial fibrillation and flutter arrhythmias, and for chemical cardioversion to sinus rhythm from atrial fibrillation and flutter...

the atrial chambers and thereby diminishes the performance of the atrial myocardium, or atrial heart muscle. The ordered, sinoatrial control of atrial electrical...

the atria into the ventricles. When the action potential triggers the muscles in the atria to contract (atrial systole), the pressure within the atria...

treat various heart conditions. Most frequently it is used for atrial fibrillation, atrial flutter, and heart failure. Digoxin is one of the oldest medications...

the next action potential). The increase in electrical re-entry causes the fibrillation or uncontrolled action potential discord of atrial myocytes....

membrane potential that returns it to a negative value just after the depolarization phase of an action potential which has changed the membrane potential to...

occurrences of atrial fibrillation in patients with heart failure and reduced left ventricular function. While these studies have demonstrated a potential additional...

longer action potential durations and effective refractory periods in the ventricles. Certain ion currents such as IK(UR) are highly specific to atrial cardiomyocytes...

electrical pathway (therefore favoring 1:1 atrial to ventricle conduction through the pre-excitation pathway, potentially leading to unstable ventricular arrhythmias)...