Risk factor Score
Age ≥ 65 years 3
Female sex 3
BMI ≥ 30 kg/m2 1
(Ischemic) cardiomyopathy and/or hypertension 3
Arrhythmia 3
Thyroid disturbances 3
Liver failure 1
Neurological disorders 0.5
Diabetes 0.5
Potassium ≤ 3.5 mmol/L 6
Calcium < 2.15 mmol/L 3
CRP > 5 mg/L 1
eGFR ≤ 30 ml/min 0.5
Each list 1 QT-drug CredibleMeds 3 per drug
Each list 2 QT-drug CredibleMeds 0.5 per drug
Each list 3 QT-drug CredibleMeds 0.25 per drug
Prolonged QTc (≥450(♂)/470(♀)ms) on a previous ECG 6
Maximum risk score 34.5 points + sum of QT-drugs
Low risk < 10 points
High risk ≥ 10 points