#arrhythmic

• Ajmalină — An alkaloid extracted from the root of the tropical plant Rauwolfia serpentina, used in medicine as a class Ia antiarrhythmic agent; it acts by blocking sodium channels in myocardial cell membranes, thereby prolonging the heart's refractory period. It is primarily utilized for the electrocardiographic diagnosis of Brugada syndrome (the ajmaline challenge test) and in the emergency treatment of supraventricular tachycardias induced by Wolff-Parkinson-White syndrome.
• Arrhythmic — Lacking rhythm, cadence, or regularity; occurring or performing in an irregular, jerky, or discontinuous manner. In medicine, the term is primarily used to describe a pulse or heartbeat that deviates from the normal cardiac frequency, while in music or literature it indicates a faulty composition or execution that fails to respect the established meter or rhythmic structure.
• Arrhythmicity — The quality, state, or character of being arrhythmic; the total or partial absence of rhythm, cadence, or regularity in the development of a biological, physical, or mechanical phenomenon. In a clinical context, it represents a pathological structural manifestation describing the instability of physiological frequencies, analyzed in detail using diagrams and monitoring devices.