Clinical use
Use this calculator for drug-induced qt prolongation risk in hospitalized patients in thecardiovascular workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.
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Cardiovascular
Tisdale Risk Score for QT Prolongation Calculator
Drug-induced QT prolongation risk in hospitalized patients
Calculate Tisdale
Interpretation
≤6: low risk. 7-10: moderate. ≥11: high — avoid QT-prolonging drugs, continuous telemetry, maintain K⁺>4.0.
Required inputs
- Age 68 +
- Sex
- Loop Diuretic
- Potassium < Than 3_5
- Qtc Greater Than 450
- Acute Mi
- Sepsis
Evidence and limitations
This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.
References
- Tisdale JE et al. Circ Cardiovasc Qual Outcomes 2013;6:479-487
Frequently asked questions
What is the Tisdale Risk Score for QT Prolongation?
Tisdale Risk Score for QT Prolongation is a clinical calculator used for Drug-induced QT prolongation risk in hospitalized patients.
How do I interpret the Tisdale Risk Score for QT Prolongation?
≤6: low risk. 7-10: moderate. ≥11: high — avoid QT-prolonging drugs, continuous telemetry, maintain K⁺>4.0.
What inputs are required for the Tisdale Risk Score for QT Prolongation?
Required inputs include Age 68 +, Sex, Loop Diuretic, Potassium < Than 3_5, Qtc Greater Than 450, Acute Mi, Sepsis.
What is the evidence behind the Tisdale Risk Score for QT Prolongation?
The Tisdale Risk Score for QT Prolongation page cites Tisdale JE et al. Circ Cardiovasc Qual Outcomes 2013;6:479-487.
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