QUESTION 1 of 10 What is the key PR interval charocterstic of firsidegree AV block? PR is consistent and all
P
waves conduct to cause QRSs, but the PR is longer than normal PR varies and has no relationship to the QRS The PR gets gradually longer for successive beats uniti a P wave fails to conduct and a QRS is dropped PR is consistent for all conducted beats, but not all
P
waves conduct to cause QRSs