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Torsades de pointes is the most serious side effect of dofetilide therapy. The incidence of torsades de pointes is 0.3-10.5% and is dose-related, with increased incidence associated with higher doses.
Dofetilide blocks only the rapid K channels; this means that at higher heart rates, when there is increased involvement of the slow K channels, dofetilide has less of an action potential-prolonging effect. Sotalol is indicated for the treatment of atrial or ventricular tachyarrhythmias, and AV re-entrant arrhythmias.
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Dofetilide; Dronedarone; E-4031; Ibutilide; Sotalol; Vernakalant; K + channel blocker. Sotalol is also a beta blocker [5] Amiodarone has mostly Class III activity, but also I, II, & IV activity [6] Prevent paroxysmal atrial fibrillation [7] and haemodynamically stable ventricular tachycardia [8] (amiodarone) Treat atrial flutter and atrial ...
If atrial fibrillation with pre-excitation occurs, treatment options include procainamide, flecainide, propafenone, dofetilide, and ibutilide, since these medications slow conduction in the accessory pathway causing the tachycardia and should be administered before considering electrical cardioversion.
Bictegravir should not be used with dofetilide and rifampin. [16] Use of dofetilide with bictegravir increases the concentration of dofetilide, which can lead to life-threatening events. [ 16 ] Concomitant use of bictegravir and rifampin causes significant interactions because of an effect rifampin has on bictegravir. [ 16 ]
Dronedarone has been termed a "multichannel blocker". [citation needed] However, it is unclear which channel(s) play a pivotal role in its success. [9]Thus, dronedarone's actions at the cellular level are controversial, with most studies suggesting an inhibition in multiple outward potassium currents including rapid delayed rectifier, slow delayed rectifier and ACh-activated inward rectifier. [10]
An antiemetic is a drug that is effective against vomiting and nausea.Antiemetics are typically used to treat motion sickness and the side effects of opioid analgesics, general anaesthetics, and chemotherapy directed against cancer.