EKG lecture 2 part 2 highlights

Question 1

1) What does the PR interval represent?
2) What does the PR segment represent?

Answer 1

1) P wave + AV pause
2) AV pause

Question 2

If a lead is to the right during ventricular depolarization, what will it show?

Answer 2

Positive

Question 3

True or false: QRS interval and QRS duration are the same thing

Answer 3

True

Question 4

P wave is usually small and usually positive in ____________ and _________ leads

Answer 4

left lateral and inferior leads

Question 5

1) _____________ is large, and tall _______ waves are usually seen in the most left lateral and inferior leads.
2) R wave progression refers to the sequential enlargement of R waves from ______-______.
3) A small septal Q wave can often be seen in 1 or several _____________ leads and sometimes in the _________ leads.

Answer 5

1) QRS; r
2) V1-V5
3) left lateral; inferior

Question 6

T wave is variable but usually positive in leads with tall _____ waves

Answer 6

R