S1, S2, S3, S4 Flashcards
1
Q
S1 cause?
A
Closure of mitral + tricuspid valves
2
Q
S2 cause?
A
Closure of aortic + pulmonary valves
3
Q
Loud S1
A
Mitral stenosis
4
Q
Soft S1 (2)
A
Long PR
Mitral regurgitation
5
Q
Soft S2
A
Aortic stenosis
6
Q
S3 (4)
A
LVF
Dilated cardiomyopathy
Constrictive pericarditis
Mitral regurgitation
7
Q
S4 (3)
A
Aortic stenosis
HOCM
Hypertension
8
Q
Loud S2 (2)
A
Systemic hypertension
Pulmonary hypertension
9
Q
Fixed split S2
A
ASD
10
Q
Widely split S2 (3)
A
RBBB
Pulmonary stenosis
Severe mitral regurgitation
11
Q
Paradoxical split S2 (3)
A
LBBB
Severe aortic stenosis
PDA
