How to Place a Larger Cannula in an Arrest

The artery should be thicker walled and smaller in diameter in a patient and arrest, but you can't decide from where it is. You're going to start dilating up and getting your bigger cannula in. As the dilators get bigger, if you go, eh, at the wrong angle, you blow out a vessel. It's really a matter of keeping a consistent angle, whatever angle the needle entered. And then understanding what is the appropriate amount of tissue resistance and what is not feeling right.