SYNTAX Score Coronary Complexity Estimator

Explains the SYNTAX score system for quantifying coronary artery disease complexity based on anatomical features: dominance, number of lesions, bifurcation involvement, calcification, tortuosity, thrombus, diffuse disease. Low ≤22 (PCI preferred), intermediate 23–32, high ≥33 (CABG preferred).

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Explains the SYNTAX score system for quantifying coronary artery disease complexity based on anatomical features: dominance, number of lesions, bifurcation involvement, calcification, tortuosity, thrombus, diffuse disease. Low ≤22 (PCI preferred), intermediate 23–32, high ≥33 (CABG preferred)

Each component has a specific meaning:

  • Anatomical features: dominance — The anatomical features: dominance recorded for the scenario being assessed.
  • Number of lesions — The number of lesions recorded for the scenario being assessed.
  • Bifurcation involvement — The bifurcation involvement recorded for the scenario being assessed.
  • Calcification — The calcification recorded for the scenario being assessed.
  • Tortuosity — The tortuosity recorded for the scenario being assessed.
  • Thrombus — The thrombus recorded for the scenario being assessed.

Note: Interpret the syntax score result against the thresholds and context described above.

How to Use

Enter the anatomical features: dominance, number of lesions, bifurcation involvement, calcification, tortuosity, thrombus for the scenario you are assessing. Explains the SYNTAX score system for quantifying coronary artery disease complexity based on anatomical features: dominance, number of lesions, bifurcation involvement, calcification, tortuosity, thrombus, diffuse disease. Low ≤22 (PCI preferred), intermediate 23–32, high ≥33 (CABG preferred). Use the syntax score result to inform your calculation.

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Frequently Asked Questions