Resting ejection fraction 50 to 40%; 10 to 19% drop from baseline
Resting ejection fraction 39 to 20%; ≥20% drop from baseline
Resting ejection fraction <20%
The percentage computed when the amount of blood ejected during a ventricular contraction of the heart is compared to the amount that was present prior to the contraction. Separate criteria are used for heart failure and left ventricular systolic dysfunction.
NCI CTCAE: National Cancer Institute Common Terminology Criteria for Adverse Events.