heart Flashcards
1
Q
S1 closure of …
A
mitral and tricuspid
2
Q
Mitral is on the…
A
right
3
Q
tricuspid is on the …
A
left
4
Q
S2 closure of…
A
aortic and pulmonary
5
Q
Which valve closes first S2….
A
aortic closes before the pulmonary
6
Q
Why aortic valve close before the pulmonic
A
aortic has a higher closing pressure (80) compared to pulmonic (10)
7
Q
S3 is…
A
transition from rapid to slow ventricular filling in early diastole
8
Q
S3 can be normal…
A
in children
9
Q
S4 is caused by…
A
forcible atrial contraction against decreased ventricular compliance
10
Q
S2 splitting of ASD
A
FIXED
wide fixed splitting
11
Q
S2 splitting breathing
A
VARIABLE
wide variable splitting
expiration closer
inspiration farther apart
12
Q
abnormal S2 splitting possibilities
A
- RV overload (ASD)
- RV outflow obstruction, such as pulmonary stenosis
- delayed RV depolarization such as RBBB
13
Q
Single S2
A
- missing semilunar valve
- if both valves close with same pressure. pulmonary HTN
- posterior displacement of pulmonary valve
14
Q
What is paradoxical splitting?
A
when hear P2 before A2
15
Q
Causes of paradoxical splitting…
A
- severe aortic stenosis
2. LBBB
