Lab 3: EKG and Heart Sounds Flashcards
1
Q
phonocardiography is the
A
recording of heart sounds
2
Q
p-wave represents
A
atrial depolarization
3
Q
QRS complex represents
A
ventricular depolarization
4
Q
why is the QRS complex larger in amplitude?
A
- more voltage is needed to push the blood through the ventricles
- more cells are depolarizing
5
Q
t-wave represents
A
ventricular repolarization
6
Q
why is atrial repolarization not seen in the waves?
A
b/c atrial repolarization occurs at the same time as ventricular depolarization which is very big in amplitude, covering up the atrial repolarization
7
Q
what are the 2 types of heat sounds?
A
- S1
2. S2
8
Q
S1 indicates and correlates w/
A
indicates: closing of AV valves
correlates: QRS complex
9
Q
S2 indicates and correlates with
A
indicates: SL valves closing
correlates: T-wave
