Answer
ECGs detect excessive QT prolongation or slow heart rate, while blood tests assess kidney function and electrolyte levels that influence medicine accumulation and arrhythmia risk.
Sources for this answer
- Sotalol 80mg Tablets — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.