the ventricular cardiomyocyte membrane potential is about −90 mV at rest, which is close to the potassium reversal potential. When an action potential is...

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

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

EJ, Rubart M (March 2009). "Uniform action potential repolarization within the sarcolemma of in situ ventricular cardiomyocytes". Biophysical Journal...

Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver. It is due to disorganized electrical activity...

paroxysmal supraventricular tachycardia. Ventricular arrhythmias include ventricular fibrillation and ventricular tachycardia. Bradyarrhythmias are due to...

electrocardiogram is the result of inhibition of IKr, which prolongs the ventricular action potential. Ranolazine also exhibits its effects on the delayed rectifier...

potassium channels results in slowed atrial-ventricular myocyte repolarization. Class III agents have the potential to prolong the QT interval of the EKG,...

after-depolarizations triggered by the preceding action potential. These are often seen in patients with ventricular arrhythmias due to digoxin toxicity and reperfusion...

arteries off the left ventricle during the left ventricular systole). Apex beat Cardiac action potential Cardiac output Pulse Pollock JD, Makaryus AN (3...

affect one or more ion currents leading to prolongation of the ventricular action potential, thus lengthening the QT interval. Classification systems have...

contraction of ventricular cells. The ventricles must maximize systolic pressure to force blood through the circulation, so all the ventricular cells must...

used to prevent and treat abnormally fast heart rates. This includes ventricular and supraventricular tachycardias. Its use is only recommended in those...

heartbeat) Heart failure Left ventricular hypertrophy Hypothermia Subarachnoid hemorrhage Hypothyroidism Action potential of cardiac muscles can be broken...

circulation of blood and the ventricles are the discharging chambers. In late ventricular diastole, the atrial chambers contract and send blood to the ventricles...

Catecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited genetic disorder that predisposes those affected to potentially life-threatening abnormal...

Andrew D. (ed.). "Simulation of the Undiseased Human Cardiac Ventricular Action Potential: Model Formulation and Experimental Validation". PLOS Computational...

His-Purkinje system conducts action potentials much faster than can be propagated between myocardial cells, allowing the entire ventricular myocardium to contract...

likelihood that AF may become permanent), left ventricular size and function, peak right ventricular pressure (pulmonary hypertension), presence of left...

a number of types of cardiac dysrhythmias. This includes ventricular tachycardia, ventricular fibrillation, and wide complex tachycardia, atrial fibrillation...

treatment for refractory life-threatening ventricular tachycardia or ventricular fibrillation. These agents are potentially pro-arrhythmic, especially in settings...

including: Cardiac rhythm disturbances, such as atrial fibrillation and ventricular tachycardia; Inadequate coronary artery blood flow, such as myocardial...

Purkinje tissue or subendocardial branches) are located in the inner ventricular walls of the heart, just beneath the endocardium in a space called the...

wave represents the abnormalities of the ventricular repolarization or secondary to abnormalities in ventricular depolarisation. Inverted T wave is considered...

cardiac action potential, which in turn increases the risk of developing abnormal heart rhythms including atrial fibrillation and ventricular fibrillation...

Pheochromocytoma Sinus tachycardia Sleep deprivation Supraventricular tachycardia Ventricular tachycardia Wolff–Parkinson–White syndrome Drug related: Alcohol (Ethanol)...

device ventricular assist device, or, occasionally, heart transplantation may be recommended. Heart failure is a common, costly, and potentially fatal...

occur at each ventricular systole. Cardiac muscle tissue has autorhythmicity, the unique ability to initiate a cardiac action potential at a fixed rate...

regions undergoing different phases of the action potential simultaneously, leading to risk of ventricular fibrillation and arrhythmias. Upon being diagnosed...

A ventricular assist device (VAD) is an electromechanical device that provides support for cardiac pump function, which is used either to partially or...