Maternal Cardiac Risk Index
Calculated Cardiac Risk Score
Prob. Primary Cardiac Event
5%
Primary cardiac events include: heart failure, sustained arrhythmia, stroke, myocardial infarction, or cardiac death.
Verified
Last Review: 2026-07-17
| Prior cardiac event or arrhythmia | 3 points |
| Baseline NYHA class III-IV or cyanosis | 3 points |
| Mechanical heart valve | 3 points |
| Systemic ventricular dysfunction (LVEF <55%) | 2 points |
| High-risk left-sided valve disease / LVOT obstruction | 2 points |
| Pulmonary hypertension (RVSP >49 mmHg) | 2 points |
| Coronary artery disease | 2 points |
| High-risk aortopathy | 2 points |
| No prior cardiac intervention | 1 point |
| Late pregnancy assessment (>20 weeks) | 1 point |
| 0–1 Point | 5% Risk |
| 2 Points | 10% Risk |
| 3 Points | 15% Risk |
| 4 Points | 22% Risk |
| ≥ 5 Points | 41% Risk |
Silversides CK et al. • J Am Coll Cardiol.. 2018;May 29;71(21):2419-2430. Derivation study comprising over 1,900 pregnancies across tertiary Canadian centers demonstrating superior C-statistics.
Last Comprehensive Review: 2026-07-17
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