Unit 5 Quiz Flashcards
1
Q
How long is the normal QRS complex?
A
1-3 small boxes (0.04-0.12 seconds)
2
Q
The normal P wave should be __
A
3 small boxes (0.12 seconds)
3
Q
What does P wave represent?
A
Contraction (atria contracting)
4
Q
What does QRS complex represent?
A
Ventricular depolarization (ventricular contracting)
5
Q
If there is a conduction delay in the AV node you will see ___
A
Long PR interval
6
Q
What are ectopic foci?
A
Some impulse coming from some other place than SA node
7
Q
What is the intrinsic rate of the SA node?
A
60-100 bpm
8
Q
What does the T wave represent?
A
Ventricular repolarization
9
Q
What has to happen for a rhythm to be regular?
A
The R’s have to be equally spaced
10
Q
How many leads are on a 12 lead EKG?
A
10
11
Q
In a cardioversion when does fibrillation discharge(synchronized)?
A
On the R wave
