1-2-3 LQTS Risk Calculator
An easy, accurate online calculator that helps healthcare professionals assess Long QT Syndrome risk quickly and efficiently.

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About This Tool
The 1-2-3 LQTS Risk Calculator is a specialized online tool designed to help healthcare practitioners evaluate a patient’s risk of Long QT Syndrome, a serious cardiac condition. By inputting key factors such as age, sex, family history, medication use, and genetic markers, clinicians can quickly obtain a categorized risk level. This tool is based on validated risk scoring models used widely in cardiology research and practice, offering an invaluable resource for screening and diagnosis.
The calculator provides a clear, intuitive interface suitable for use in busy clinical settings. Results include a precise percentage risk score along with a risk category (low, moderate, high). Users can copy, export, or share results easily to integrate into medical records or review with patients. The tool is accessible on desktop and mobile devices, featuring responsive design, high contrast visuals, and accessibility features for screen readers and keyboard navigation.
Ideal for cardiologists, genetic counselors, and primary care providers, this calculator improves diagnostic efficiency, supports evidence-based risk stratification, and ultimately aids in optimal patient management. Regular updates and validation ensure accuracy aligned with current medical standards.
How to Use
1. Enter the patient’s age in years.
2. Select the patient’s sex (male or female).
3. Indicate if there is a family history of LQTS or sudden cardiac death.
4. Specify if the patient is on medications associated with QT prolongation.
5. Optional: input genetic marker presence.
6. Click the 'Calculate' button to view the risk assessment in the results panel.

FAQs/Additional Resources
Find Quick Answers
What is Long QT Syndrome and why assess the risk?
Who should use this risk calculator?
Is the risk calculation definitive or just an estimate?
Can I use this calculator for all age groups?
Is it necessary to input genetic information?
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