Step I heart sound

[Turtlez]

what does a "single s2" mean?

 

[NeuroLAX]

http://en.wikipedia.org/wiki/Split_S2

 

[sanj238]

http://en.wikipedia.org/wiki/Split_S2

I dont think that really answers it. I think he needs pathology

Persistently single;

• When S2 remains single throughout the respiratory cycle, one component is absent or the two components are persistently synchronous.
• The most common cause of a single S2 is inaudibility of the P2 in older adults with increased anteroposterior chest dimensions.
• In the setting of
  congenital heart disease, a single S2 due to absence of the pulmonary component is a feature of pulmonary atresia, severe pulmonary valve stenosis, dysplastic pulmonary valve, or complete transposition of the great arteries.
• Conversely, a single S2 due to inaudibility of the A2 occurs when the aortic valve is immobile (severe calcific aortic stenosis) or atretic (aortic atresia).

Memorize that!
http://lessons4medicos.blogspot.com/2009/07/splitting-of-second-heart-sound.html

 

[NeuroLAX]

I dont think that really answers it. I think he needs pathology

Persistently single;

• When S2 remains single throughout the respiratory cycle, one component is absent or the two components are persistently synchronous.
• The most common cause of a single S2 is inaudibility of the P2 in older adults with increased anteroposterior chest dimensions.
• In the setting of
  congenital heart disease, a single S2 due to absence of the pulmonary component is a feature of pulmonary atresia, severe pulmonary valve stenosis, dysplastic pulmonary valve, or complete transposition of the great arteries.
• Conversely, a single S2 due to inaudibility of the A2 occurs when the aortic valve is immobile (severe calcific aortic stenosis) or atretic (aortic atresia).

Memorize that!
http://lessons4medicos.blogspot.com/2009/07/splitting-of-second-heart-sound.html

Yes this better answers it. It was a good refresher, so thanks! 👍 I didn't know if they were talking about the normal differences you hear upon auscultation during inspiration and exhalation, or more pathology oriented.

 

[Anastomoses]

What's the likelihood of persistently synchronous?

 

[sanj238]

What's the likelihood of persistently synchronous?

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