Answer
In addition to beta blockade, sotalol delays cardiac repolarisation. This makes it useful for selected arrhythmias but also creates a risk of QT prolongation and proarrhythmia.
Sources for this answer
- Sotalol 80mg Tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.