QUESTION 1 of 10 What is the key PR interval charocterstic of firsidegree AV block? PR is consistent and all
Pwaves 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
Pwaves conduct to cause QRSs