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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.
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.
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 .
This is a list of drugs and substances that are known or suspected to cause Stevens–Johnson syndrome This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources .
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 medications that most commonly cause first-degree heart block are those that increase the refractory time of the AV node, thereby slowing AV conduction. These include calcium channel blockers , beta-blockers , cardiac glycosides , and anything that increases cholinergic activity such as cholinesterase inhibitors .
It is a type of supraventricular tachycardia (SVT), meaning that it originates from a location within the heart above the bundle of His. AV nodal reentrant tachycardia is the most common regular supraventricular tachycardia. It is more common in women than men (approximately 75% of cases occur in females). The main symptom is palpitations.
For most affected individuals, antianginals are used as maintenance therapy to avoid attacks of variant angina. Calcium channel blockers of the dihydropyridine class (e.g. nifedipine, amlodipine) [18] or non-dihydropyridine class (e.g. verapamil, diltiazem) are regarded as first-line drugs to avoid