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Amiodarone has particularly important interactions with the following drugs: class I antiarrhythmics (amiodarone should not be combined with other class I antiarrhythmic drugs, such as disopyramide, flecainide, procainamide, quinidine, etc., due to an increased risk of QTc prolongation and potential arrhythmias); [13]
Equianalgesic tables are available in different formats, such as pocket-sized cards for ease of reference. [1] A frequently-seen format has the drug names in the left column, the route of administration in the center columns and any notes in the right column. [2] [3]
Amiodarone is also safe to use in individuals with cardiomyopathy and atrial fibrillation, to maintain normal sinus rhythm. Amiodarone prolongation of the action potential is uniform over a wide range of heart rates, so this drug does not have reverse use-dependent action. Amiodarone was the first agent described in this class. [4]
Amiodarone induced thyrotoxicosis (AIT) is a form of hyperthyroidism due to treatment with antiarrhythmic drug, amiodarone. Amiodarone induced thyroid dysfunction more commonly results in hypothyroidism , estimated to occur in 6-32% of patients, whereas hyperthyroidism from amiodarone use is estimated at 1-12%. [ 1 ]
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 ...
Time course of drug plasma concentrations over 96 hours following oral administrations every 24 hours (τ). Absorption half-life 1 h, elimination half-life 12 h. Biological half-life ( elimination half-life , pharmacological half-life ) is the time taken for concentration of a biological substance (such as a medication ) to decrease from its ...
Potassium-sparing diuretics or antikaliuretics [1] refer to drugs that cause diuresis without causing potassium loss in the urine. [2] They are typically used as an adjunct in management of hypertension, cirrhosis, and congestive heart failure. [3] The steroidal aldosterone antagonists can also be used for treatment of primary hyperaldosteronism.
The source of iodine may be from the diet, administration of iodinated contrast for medical imaging, or amiodarone (an antiarrhythmic drug). [ citation needed ] The hyperthyroidism usually develops over 2 to 12 weeks following iodine administration.