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Indications for Class Ia agents are supraventricular tachycardia, ventricular tachycardia, symptomatic ventricular premature beats, and prevention of ventricular fibrillation. Procainamide can be used to treat atrial fibrillation in the setting of Wolff–Parkinson–White syndrome , and to treat wide complex hemodynamically stable tachycardias .
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. Many attempts have been made to classify antiarrhythmic agents.
Supraventricular tachycardia (SVT) is an umbrella term for fast heart rhythms arising from the upper part of the heart. [2] This is in contrast to the other group of fast heart rhythms – ventricular tachycardia , which start within the lower chambers of the heart . [ 2 ]
The following are medications commonly prescribed cardiac pharmaceutical agents. The specificity of the following medications is highly variable, and often are not particularly specific to a given class. As such, they are listed as are commonly accepted.
take (often effectively a noun meaning "prescription"—medical prescription or prescription drug) rep. repetatur: let it be repeated s. signa: write (write on the label) s.a. secundum artem: according to the art (accepted practice or best practice) SC subcutaneous "SC" can be mistaken for "SL," meaning sublingual. See also SQ: sem. semen seed ...
Postural orthostatic tachycardia syndrome (POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. [1] POTS is a disorder of the autonomic nervous system that can lead to a variety of symptoms, [10] including lightheadedness, brain fog, blurred vision, weakness, fatigue, headaches, heart palpitations, exercise intolerance, nausea ...
Besides, the patient should avoid receiving external effects that cause or increase tachycardia. The same measures than in unstable tachycardia can also be taken, with medications and the type of cardioversion that is appropriate for the patient's tachycardia. [10]
A number of drugs that cause QT prolongation does not directly block hERG, but reduces the trafficking of the mature protein to the surface of the cell. This includes probucol , which appears to enhance the intercellular degradation of hERG; and several cardiac glycosides , which reduces trafficking due to decreased intracellular potassium.