Skip to content
ClinCalc Pro
Menu
Cardiology

Tisdale Risk Score for QT Prolongation

Predicts risk of drug-induced QT prolongation in hospitalised patients.

Check CredibleMeds or AZCert.org for QT-prolonging drugs

Score interpretation

Low Risk 0–6

Tisdale 0–6: Low risk for drug-induced QT prolongation.

→ Standard ECG monitoring. Review QT-prolonging drug use.

Moderate Risk 7–10

Tisdale 7–10: Moderate risk. More frequent ECG monitoring recommended.

→ Serial ECG monitoring. Correct electrolytes. Review and minimise QT-prolonging drugs.

High Risk 11–21

Tisdale ≥ 11: High risk of QT prolongation and Torsades de Pointes.

→ Frequent ECG monitoring. Avoid unnecessary QT-prolonging agents. Correct electrolytes aggressively. Pharmacy review.

Interpretation bands for the Tisdale QT. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.