Table 2.
Risk factors points | Points |
---|---|
Age ≥ 68 years | 1 |
Female sex | 1 |
Loop diuretic | 1 |
Serum K+ ≤ 3.5 mEq/L | 2 |
Admission QTc ≥ 450 ms | 2 |
Acute myocardial infarction | 2 |
≥ 2 QTc-prolonging drugs | 3 |
Sepsis | 3 |
Heart failure | 3 |
One QTc-prolonging drug | 3 |
Maximum risk score | 21 |
A score of ≤ 6 predicts low risk, 7–10 medium risk, and ≥ 11 high risk of drug-associated QT prolongation. Modified from Tisdale et al [9]. in Circ Cardiovasc Qual Outcomes. 2013;6(4):479–487