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.
1 Try making bigger bows, they usually turn out cutest! 2  Use a 3 ribbon and then add a smaller (1.5) ribbon to the middle. 3  It doesn't look thrown together like this one. 4  You don't even have to use ribbons!5  Cut up an old t-shirt or other item of clothing into strips which are about one or two inches in diameter. Use a 3 ribbon and then add a smaller (1.5) ribbon to the middle. 2  It doesn't look thrown together like this one. 3  You don't even have to use ribbons! 4  Cut up an old t-shirt or other item of clothing into strips which are about one or two inches in diameter. 5  Hem the edges or use pinking shears to prevent it fraying.