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  2. Ashman phenomenon - Wikipedia

    en.wikipedia.org/wiki/Ashman_phenomenon

    Ashman beats are described as wide complex QRS complexes that follow a short R-R interval preceded by a long R-R interval. [3] This short QRS complex typically has a right bundle branch block morphology and represents an aberrantly conducted complex that originates above the AV node, rather than a complex that originates in either the right or left ventricle.

  3. Atrial fibrillation - Wikipedia

    en.wikipedia.org/wiki/Atrial_fibrillation

    Atrial fibrillation (AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of the heart. [ 11 ] [ 12 ] It often begins as short periods of abnormal beating , which become longer or continuous over time. [ 4 ]

  4. Radio-Frequency Ablation Helped 82% of Patients With AFib ...

    www.aol.com/radio-frequency-ablation-helped-82...

    Radiofrequency-based ablation for atrial fibrillation appears more effective than previously shown in clinical trials. Using real-world data, a new study found that the procedure eliminated atrial ...

  5. Cardioversion - Wikipedia

    en.wikipedia.org/wiki/Cardioversion

    Synchronized electrical cardioversion is used to treat hemodynamically unstable supraventricular (or narrow complex) tachycardias, including atrial fibrillation and atrial flutter. It is also used in the emergent treatment of wide complex tachycardias, including ventricular tachycardia, when a pulse is present.

  6. Catheter ablation - Wikipedia

    en.wikipedia.org/wiki/Catheter_ablation

    After 12 months, participants receiving catheter ablation were more likely to be free of atrial fibrillation, and less likely to need cardioversion. However, the evidence quality ranged from moderate to very low [ 4 ] A 2006 study, including both paroxysmal and non-paroxysmal atrial fibrillation, found that the success rates are 28% for single ...

  7. Effective refractory period - Wikipedia

    en.wikipedia.org/wiki/Effective_refractory_period

    Effective refractory period in green. In electrocardiography, during a cardiac cycle, once an action potential is initiated, there is a period of time that a new action potential cannot be initiated. This is termed the effective refractory period (ERP) of the tissue.

  8. Antiarrhythmic agent - Wikipedia

    en.wikipedia.org/wiki/Antiarrhythmic_agent

    Antiarrhythmic agents, also known as cardiac dysrhythmia medications, are a class of drugs that are used to suppress abnormally fast rhythms (tachycardias), such as atrial fibrillation, supraventricular tachycardia and ventricular tachycardia.

  9. Refractory period (physiology) - Wikipedia

    en.wikipedia.org/wiki/Refractory_period_(physiology)

    This period of time is referred to as the refractory period, which is 250ms in duration and helps to protect the heart. In the classical sense, the cardiac refractory period is separated into an absolute refractory period and a relative refractory period. During the absolute refractory period, a new action potential cannot be elicited.