Sotalol Reinitiation Guidelines

Restarting Sotalol After Discontinuation

Patients reinitiating sotalol after discontinuation must be treated as new initiations and require hospital admission with continuous ECG monitoring for a minimum of 3 days, as recommended by the American College of Cardiology 1
All patients restarting sotalol require inpatient telemetry monitoring, regardless of their previous tolerance, according to the American College of Cardiology 1
QT interval monitoring must occur 2-4 hours after each dose during reinitiation, as suggested by the American College of Cardiology 2, 3, 1

Baseline uncorrected QT interval must be <450 ms before reinitiation, as recommended by the American College of Cardiology 1
Serum electrolytes must be normal (particularly potassium and magnesium) to minimize risk of torsades de pointes, according to the American College of Cardiology 1
Creatinine clearance must be assessed; sotalol is contraindicated if CrCl <20 mL/min, as stated by the American College of Cardiology 2, 3, 1

Starting dose should be 40-80 mg every 12 hours, as recommended by the American College of Cardiology 2, 3, 1
Maximum maintenance dose is 160 mg every 12 hours, according to the American College of Cardiology 2, 3, 1
If QTc prolongs to ≥500 ms (or ≥550 ms in patients with ventricular conduction abnormalities), the dose must be reduced or discontinued, as suggested by the American College of Cardiology 2, 3, 1

Do not restart sotalol in an outpatient setting; the same rigorous monitoring required for initial therapy applies to reinitiation, as recommended by the American College of Cardiology 1
Avoid concomitant QT-prolonging drugs during the restart period, according to the American College of Cardiology 1
Do not use sotalol with other drugs that have SA/AV nodal-blocking properties without careful dose adjustment, as stated by the American College of Cardiology 2, 3