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Legal status. In Wikidata. Beta blockers, also spelled β-blockers, are a class of medications that are predominantly used to manage abnormal heart rhythms ( arrhythmia ), and to protect the heart from a second heart attack after a first heart attack ( secondary prevention ). [1]
They are used as anti-arrhythmic drugs in patients with hyperthyroidism, cardiac dysrhythmia, atrial fibrillation, atrial flutter and ventricular tachycardia. The treatment with β-blockers reduces the incidence of sudden heart failure when the patient has already had a myocardial infarction.
MYmta is a mobile application-based passenger information display system developed by the Metropolitan Transportation Authority (MTA) of New York City. A beta version of the app was launched on July 2, 2018, and as of June 2019 [update] is still undergoing beta testing .
MYmta, currently in a beta test phase, is available for download on Google Play and the Apple App Store.
Metoprolol is a beta blocker, or an antagonist of the β-adrenergic receptors. It is specifically a selective antagonist of the β 1-adrenergic receptor and has no intrinsic sympathomimetic activity. Metoprolol exerts its effects by blocking the action of certain neurotransmitters, specifically adrenaline and noradrenaline.
There are many classes of antihypertensives, which lower blood pressure by different means. Among the most important and most widely used medications are thiazide diuretics, calcium channel blockers, ACE inhibitors, angiotensin II receptor antagonists (ARBs), and beta blockers .
Beta adrenergic agonists or beta agonists are medications that relax muscles of the airways, causing widening of the airways and resulting in easier breathing. They are a class of sympathomimetic agents, each acting upon the beta adrenoceptors.
Beta blockers exert their pharmacological effect, decreased heart rate, by binding to and competitively antagonising a type of receptor called beta adrenoceptors.. In pharmacology, the term mechanism of action (MOA) refers to the specific biochemical interaction through which a drug substance produces its pharmacological effect.
Visual definition of an antagonist, where it compared to agonists and reverse agonists. An adrenergic antagonist is a drug that inhibits the function of adrenergic receptors. There are five adrenergic receptors, which are divided into two groups. The first group of receptors are the beta (β) adrenergic receptors.
In 2018 only one β 3-AR agonist is approved by the European Medicines Agency (EMA) and the Food and drug Administration (FDA) as a medicine. The medicine is called Mirabegron and is used to treat OAB.