Ejection Fraction The Lower the Number, the Higher the Risk. Ejection fraction, or EF, is the percentage of blood that is pumped out of the heart during each beat. Doctors often use EF to determine how healthy your heart is and how well it is functioning as a pump. A low EF number is a serious health risk.
To really get your costume looking right, try to get an aqua-blue hooded sweatshirt, t-shirt, or tank-top to turn into your Rainbow Dash costume. You don't really need to do anything to the shirt to make a costume out of it, just make sure it's the right color. With your wig, it'll start looking a lot like Rainbow Dash.
Center each trout on a separate sheet of foil. 1  Place the trout skin-side down. 2  Consider leaving the head or tail on while cooking. This reduces the amount of skin that breaks, which allows the flavor of the rainbow trout to come out stronger.  Note that most rainbow trout purchased in a store will be butterflied open.