Interaksi Atenolol dan klortalidon dan Dofetilid

In the DIAMOND trials, 1252 patients were treated with dofetilide and diuretics concomitantly, of whom 493 died compared to 508 deaths among the 1248 patients receiving placebo and diuretics.

HCTZ 50 mg QD or HCTZ/triamterene 50/100 mg QD was co-administered with dofetilide (500 mcg BID) for 5 days (following 2 days of diuretic use at half dose).

Of the 229 patients who had potassium depleting diuretics added to their concomitant medications in the DIAMOND trials, the patients on dofetilide had a non-significantly reduced relative risk for death of 0.68 (95% CI: 0.376, 1.230).

…oral anticoagulants, calcium channel blockers, beta blockers, cardiac glycosides, inducers of CYP3A4, substrates and inhibitors of CYP3A4, substrates and inhibitors of P-glycoprotein, nitrates, sulphonylureas, loop diuretics, potassium sparing diuretics, thiazide diuretics, substrates and inhibitors of tubular organic cation transport, and QTc-prolonging drugs.

Hypokalemia and Potassium-Depleting Diuretics Hypokalemia or hypomagnesemia may occur with administration of potassium-depleting diuretics, increasing the potential for Torsade de Pointes.

Amiodarone is an antiarrhythmic agent with negative chronotropic properties that may be additive to those seen with beta-blockers.

(See WARNINGS .) Disopyramide is a Type I antiarrhythmic drug with potent negative inotropic and chronotropic effects.