Welcome to the SYNTAX Score website.

The SYNTAX Score is a unique tool to score complexity of coronary artery disease. As it is very important to use this scoring tool correctly, it is strongly recommended to complete the tutorial before first use.


Knowledge of definitions is vital. Please use the tutorial prior to first calculator use.

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Start using the calculator when you have successfully completed the tutorial.

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SYNTAX Score II calculator

By combining anatomic and clinical prognostic variables, the SYNTAX score II creates accurate mortality predictions to guide the choice between PCI and CABG for patients with multivessel coronary disease. The SYNTAX score II calculator provides the doctor with an individual, patient-oriented treatment recommendation based on the mortality risk. This tool was validated in different registries and randomized trials. It has also been the basis for the ongoing SYNTAX II trial, sponsored by the European Cardiovascular Research Institute in Rotterdam, The Netherlands, which final 5-year results are expected in 2021. 

For more information on the SYNTAX II trial, CLICK HERE.

Be sure to start the tutorial first if you are not familiair with the SYNTAX Score I calculator. Otherwise, CLICK HERE to start using the calculator right away!