hedoescocaine: Proper angle to inject intravenously. Remember, when you think you are in a vein, pul
hedoescocaine: Proper angle to inject intravenously. Remember, when you think you are in a vein, pull back the plunger and see if blood flows into the barrel - this is called registering. If it did, you’re good to go. And always have the needle pointed toward you when injecting so that you’re going along with the flow of blood toward your heart. Be safe! -- source link