Quiz 3 - The QRS Complex and Axis Flashcards
1
Q
What does the QRS complex represent?
A
Ventricular Depolarization
2
Q
The QRS complex is is the visual summation of what?
A
Ventricular Vectors
3
Q
Order of Ventricular Depolarization on a Physiologic Level:
A
- Septum (from left to right)
- Main portion of ventricle (largest vector)
- Basilar/Bottom Portion of Ventricle
4
Q
What affects the amplitude of the QRS complex?
A
The size and direction of vectors in relation to the leads
5
Q
In a hypertrophic ventricle, what would happen to the QRS amplitude and why?
A
Higher Amplitude!
Because there is more muscle to conduct through, therefore more vectors are present.
6
Q
In an infarcted tissue in the ventricle, what would happen to the QRS amplitude and why?
A
Unopposed wave on the EKG
Because conduction will not pass through the scar tissue.
7
Q
If there is fluid and fat in the heart, what would happen to the QRS amplitude and why?
A
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