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M-FACT * RISK SCORE
| − 1 point | 0 points | 1 point | 2 points | |
|---|---|---|---|---|
| Event free on therapy for > 10 yrs | Yes | |||
| QTc (ms) | ≤ 500 | > 500 – ≤ 550 | >550 | |
| Prior ACA | No | Yes | ||
| Events on therapy | No | Yes | ||
| Age at implant | > 20 yrs | ≤ 20 yrs |
Acronym derived from M (Minus 1 point for being free of cardiac events while on therapy for > 10 years); F (“Five Hundred” and “Five hundred and Fifty ms QTc); A for Age ≤ 20 years at implant; C (Cardiac arrest); T (events on Therapy); ACA = Aborted Cardiac Arrest
(From ref. 72)
