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Beta blockers are known primarily for their reductive effect on heart rate, although this is not the only mechanism of action of importance in congestive heart failure. [17] Beta blockers, in addition to their sympatholytic β 1 activity in the heart, influence the renin–angiotensin system at the kidneys.
Atropine is a tropane alkaloid and anticholinergic medication used to treat certain types of nerve agent and pesticide poisonings as well as some types of slow heart rate, and to decrease saliva production during surgery. [6] It is typically given intravenously or by injection into a muscle. [6]
Sympathomimetic drugs (also known as adrenergic drugs and adrenergic amines) are stimulant compounds which mimic the effects of endogenous agonists of the sympathetic nervous system. Examples of sympathomimetic effects include increases in heart rate , force of cardiac contraction , and blood pressure . [ 1 ]
Some drugs and medications affect heart rate, meaning you may have a lower maximum heart rate and target zone, says Dr. Steinbaum. “If you have a heart condition or take medication, ask your ...
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.
Raises blood pressure and heart rate. [2] Sexual stimulation; Male erectile dysfunction; Hypotension [2] May cause anxiety [12] Central Nervous System stimulation; Labetalol: Trandate Blocks some α 1 receptor activity, but binds more strongly to β receptors. [2] Lowers blood pressure, increases heart rate slightly. [2] Hypertension [2] [13 ...
This abnormal electrical activity causes the atria to contract erratically, resulting in an irregular heartbeat. [89] Treatment primarily focuses on restoring normal heart rhythm and controlling the heart rate to minimise the risk of complications, including stroke.
Class III antiarrhythmic drugs are potassium channel blockers that cause QT prolongation and are associated with TdP. Amiodarone. Amiodarone works in many ways. It blocks sodium, potassium, and calcium channels, as well as alpha and beta adrenergic receptors. Because of its multiple actions, amiodarone causes QT prolongation but TdP is rarely ...