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Ibutilide is a Class III antiarrhythmic agent that is indicated for acute cardioconversion of atrial fibrillation and atrial flutter of a recent onset to sinus rhythm. It exerts its antiarrhythmic effect by induction of slow inward sodium current, which prolongs action potential and refractory period of myocardial cells.
Adenosine (symbol A) is an organic compound that occurs widely in nature in the form of diverse derivatives. The molecule consists of an adenine attached to a ribose ...
A package insert from 1970, with Ovrette brand contraception pills A package insert is a document included in the package of a medication that provides information about that drug and its use. For prescription medications , the insert is technical , providing information for medical professionals about how to prescribe the drug.
Technetium (99m Tc) tetrofosmin is a drug used in nuclear medicine cardiac imaging.It is sold under the brand name Myoview (GE Healthcare).The radioisotope, technetium-99m, is chelated by two 1,2-bis[di-(2-ethoxyethyl)phosphino]ethane ligands which belong to the group of diphosphines and which are referred to as tetrofosmin.
As a purine analogue, cladribine is taken up into rapidly proliferating cells, including B and T lymphocytes, to be incorporated into DNA synthesis. Chemically, it mimics nucleoside adenosine; however, unlike adenosine, cladribine has a chlorine molecule at position 2, which renders it partially resistant to breakdown by adenosine deaminase.
An adenosine receptor agonist is a drug which acts as an agonist of one or more of the adenosine receptors. Examples include the neurotransmitter adenosine , its phosphates , adenosine monophosphate (AMP), adenosine diphosphate (ADP), and adenosine triphosphate (ATP), and the pharmaceutical drug regadenoson .
Without myoadenylate deaminase, heavy activity causes adenosine to be released into the cell or perfused into the surrounding tissues. Fatigue and sedation after heavy exertion can be caused by excess adenosine in the cells which signals muscle fiber to feel fatigued. In the brain, excess adenosine decreases alertness and causes sleepiness.
Adenosine diphosphate receptor inhibitors are a drug class of antiplatelet agents, used in the treatment of acute coronary syndrome (ACS) or in preventive treatment for patients who are in risk of thromboembolism, myocardial infarction or a stroke.