Bates Flashcards
What makes up the physiologic splitting of S2?
A2 = aortic valve closure P2 = pulmonic valve closure
Which sound do you hear first in splitting of S2?
A2
When are you more likely to hear a split S2?
During inspiration when the right heart filling time is increased
During the splitting of S2, which sound is louder?
A2
Where should you listen to hear splitting of S2?
2nd and 3rd left left interspace close to the sternum
What causes S3?
A pathologic change in ventricular compliance; An abrupt deceleration of inflow across the mitral valve (dilated heart from too much volume)
What causes S4?
Increased left ventricular and diastolic stiffness that decreases compliance
What causes the “opening snap” of mitral valve stenosis?
The mitral valve leaflet motion is restricted, so when it opens you can hear it
S4 marks ____ contraction and comes right before S1
Atrial
Where would you hear a mitral regurgitation murmur?
At the apex
Where does a mitral regurgitation murmur radiant toe?
The left axilla
Does a mitral regurgitation murmur become louder with inspiration?
No!
Where do you listen to hear a tricuspid regurgitation murmur?
Lower left sternal border
Where does a tricuspid regurgitation murmur radiate to?
Right of the sternum, to the xiphoid area, and to the midclavicular line, but NOT into the axilla
Does the intensity of tricuspid regurgitation increase with inspiration?
Yes
Where will you hear a ventricular septal defect?
3rd, 4th, and 5th left ICS
Where will you hear an innocent/physiologic murmur?
2nd to 4th ICS between the left sternal border and the apex
Will an innocent/physiologic murmur radiate?
A little
What will cause an innocent murmur to disappear or decrease?
Sitting
Where would you hear aortic stenosis
Right 2nd ICS
Where does aortic stenosis radiate to?
Often to BOTH carotids, down the left sternal border and to the apex
What will help you to hear an aortic stenosis murmur better?
Have the patient sit and lean forward!
Where will you hear a pathologic murmur of hypertrophic cardiomyopathy?
3rd and 4th ICS
Where does a hypertrophic cardiomyopathy murmur radiate?
Down the left sternal border to the apex, possibly to the base, but NOT to the neck
What causes the pathologic murmur of hypertrophic cardiomyopathy to decrease?
Squatting!!***
What causes the pathologic murmur of hypertrophic cardiomyopathy to increase?
Straining down from Valsalva and standing
Where will you hear a pulmonic stenosis murmur?
2nd and 3rd left interspaces
Where will a pulmonic stenosis murmur radiate?
Toward the left shoulder and neck (if loud)
So if you haven’t noticed pulmonic stenosis and aortic stenosis sound VERY similar, so how do you tell the difference?
The areas where you listen
Pulmonic = Left 2nd and 3rd ICS
Aortic = Right 2nd ICS
The radiation
Pulmonic = left shoulder and neck
Aortic = Carotids and down left sternal border
Splitting of S2
Pulmonic will have a decreased P2 sound if split
Aortic will have a decreased A2 sound if split
And you are going to hear an aortic stenosis murmur better when the patient is SITTING FORWARD!