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Class III agents predominantly block the potassium channels, thereby prolonging repolarization. [2] More specifically, their primary effect is on I Kr. [3]Since these agents do not affect the sodium channel, conduction velocity is not decreased.
Diltiazem, sold under the brand name Cardizem among others, is a nondihydropyridine calcium channel blocker medication used to treat high blood pressure, angina, and certain heart arrhythmias. [9] It may also be used in hyperthyroidism if beta blockers cannot be used. [9] It is taken by mouth or given by injection into a vein. [9]
Structural formula of diltiazem. Benzothiazepine calcium channel blockers belong to the benzothiazepine class of compounds and are an intermediate class between phenylalkylamine and dihydropyridines in their selectivity for vascular calcium channels. By having both cardiac depressant and vasodilator actions, benzothiazepines are able to reduce ...
Metoprolol, sold under the brand name Lopressor among others, is a medication used to treat angina, high blood pressure and a number of conditions involving an abnormally fast heart rate. [4] It is also used to prevent further heart problems after myocardial infarction and to prevent headaches in those with migraines . [ 4 ]
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If symptoms of discontinuation are severe, or do not respond to symptom management, the antidepressant can be reinstated and then withdrawn more cautiously, or by switching to a drug with a longer half life (e.g., fluoxetine), and then tapering and discontinuing that drug. [21] In severe cases, hospitalization may be required. [2]
1. Go Hear a Local Band. It's amazing the talent that goes undiscovered, and they might be in your local pub. 2. Visit a Farmer's Market. This might be seasonal in your area, but it's becoming ...
A prodrug is a pharmacologically inactive medication or compound that, after intake, is metabolized (i.e., converted within the body) into a pharmacologically active drug. [1] [2] Instead of administering a drug directly, a corresponding prodrug can be used to improve how the drug is absorbed, distributed, metabolized, and excreted ().