Skip to main content
Calcimator

Stent vs CABG Decision Calculator

Estimate SYNTAX score complexity and compare PCI vs CABG outcomes for revascularization decision-making.

Estimated SYNTAX Score

15.5

Complexity Category

1

Inputs

Comparison

Recommendation

0

0 = PCI favored, 1 = Either reasonable, 2 = CABG preferred, 3 = CABG strongly recommended.

PCI Suitability Score

69/100

Higher = more suitable for PCI. Based on anatomical complexity.

PCI 5-Year MACCE

27%

Estimated 5-year major adverse cardiac/cerebrovascular event rate with PCI.

CABG 5-Year MACCE

27%

Estimated 5-year MACCE rate with CABG.

PCI Repeat Revasc Rate

14%

Estimated repeat revascularization rate with PCI.

CABG Repeat Revasc Rate

8%

Estimated repeat revascularization rate with CABG.

Results Overview

How to Use This Calculator
  1. Enter number of significant lesions, left main involvement (0/1), and bifurcation lesion count.
  2. Set chronic total occlusion count, calcification level, diffuse disease flag, and tortuosity level.
  3. Review Estimated SYNTAX Score, Complexity Category, PCI Suitability Score, and Recommendation.
  4. SYNTAX ≤ 22 favors PCI; > 32 strongly favors CABG per ESC/ACC guidelines.

What each input means

Number of significant lesions
Count of angiographically significant (>50%) stenoses.
Left main disease
Left main coronary artery involvement. Enter 1 for yes, 0 for no.
Bifurcation lesions
Number of lesions involving a bifurcation.
Chronic total occlusions
Number of chronic total occlusions (100% stenosis >3 months).
Calcification (0-2)
0 = None/mild, 1 = Moderate, 2 = Severe calcification.
Diffuse disease
Diffusely diseased vessels. Enter 1 for yes, 0 for no.
Vessel tortuosity (0-2)
0 = None, 1 = Moderate, 2 = Severe tortuosity.

What each result means

Estimated SYNTAX Score
Approximate anatomical complexity score. Low ≤22, Intermediate 23-32, High >32.
Complexity Category
1 = Low (≤22), 2 = Intermediate (23-32), 3 = High (>32).
Recommendation
0 = PCI favored, 1 = Either reasonable, 2 = CABG preferred, 3 = CABG strongly recommended.
PCI Suitability Score
Higher = more suitable for PCI. Based on anatomical complexity.
PCI 5-Year MACCE
Estimated 5-year major adverse cardiac/cerebrovascular event rate with PCI.
CABG 5-Year MACCE
Estimated 5-year MACCE rate with CABG.
PCI Repeat Revasc Rate
Estimated repeat revascularization rate with PCI.
CABG Repeat Revasc Rate
Estimated repeat revascularization rate with CABG.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Number of significant lesions = 3, Left main disease = 0, Bifurcation lesions = 1, Chronic total occlusions = 0 = 7 input(s) provided
  2. Calculate Estimated SYNTAX Score
    Estimated SYNTAX Score
    15.5 = 15.5
  3. Calculate Complexity Category
    1 = 1
  4. Calculate Recommendation
    0 = 0
  5. Calculate PCI Suitability Score
    69 = 69

Related Calculators

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

Cardiology

Cardiac Risk Calculator

Revised Cardiac Risk Index (RCRI/Lee Index) for estimating perioperative major cardiac event risk.

Cardiology

Cardiac Rehab Exercise Calculator

Generate an exercise prescription for cardiac rehabilitation using heart rate reserve, RPE, and estimated METs from stress test results.

Cardiology

Anticoagulation Calculator

Warfarin dose adjustment calculator based on current INR, target range, and weekly dose with recheck interval recommendations.

More in Medical & Clinical.