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.
Dashikis are traditionally loose fitting pull-over shirts for men with a ornate v shaped collar. They range from casual to formal with an easy to wear look. While the more casual kind are usually cotton shirts with little or no embroidery, higher end dress shirts will often be made of a silk brocade. More formal African Dashikis can have intricate embroidery along the neck or collar and at the sleeve ends.