Lab 2: EKG Flashcards
1
Q
How many leads are used for EKG?
A
12
2
Q
What is Einthoven’s triangle?
A
Standard lead placement
3
Q
What is the time interval between two dark black lines?
A
0.2 seconds
4
Q
What is a P wave?
A
Atrial depolarization
5
Q
What is a QRS?
A
Ventricular depolarization
6
Q
What is a T wave?
A
Ventricular repolarization
7
Q
What is the P-R interval?
A
End of the P wave to the peak of the R
8
Q
What is the ST segment?
A
End of the S wave to the start of the T wave
9
Q
What is ST elevation indicative of?
A
Acute MI
10
Q
What is ST depression indicative of?
A
Acute ischemia, old MI, subendocardial MI
11
Q
What is a significant Q wave?
A
If the amplitude is greater than 1/3 of the R wave and/or the duration is longer than 0.1 seconds
12
Q
What are the three methods to calculate HR from an EKG?
A
- Block method
- 6 second method
- Counting boxes
