Deck: paused
Does a PR interval go from the beginning of the P wave or the end?  To the beginning of the R wave or the end?  What is a normal PR interval?
Does a PR interval go from the beginning of the P wave or the end?  To the beginning of the R wave or the end?  What is a normal PR interval?
Beginning of the P wave; beginning of R; 120-200ms
based on lecture 3