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Old 09-10-2011
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Stethoscope JVP and S1 Sound correlation

S1 heart sound correlates with which wave on JVP waveform?

A. a
B. c
C. v
D. X
E. y
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Old 09-10-2011
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i will go with C
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Old 09-10-2011
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Answer B, wave c.
When tricuspic valve closes, s1, and the right ventricle starts contracting, the tricuspid valve can bulge into the RA causing wave c.
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Old 09-10-2011
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Quote:
Originally Posted by plasticsurgeon View Post
S1 heart sound correlates with which wave on JVP waveform?

A. a
B. c
C. v
D. X
E. y
the correct answer should be
B. c
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Old 09-11-2011
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B . CC wave occurs after the closing of tricuspid .
actually it should be starting point of c wave.
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Old 09-11-2011
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Unhappy D??

why cant it be X descent as it is the point which corresponds exactly with S1 ..
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Old 09-11-2011
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Quote:
Originally Posted by mayursn39 View Post
why cant it be X descent as it is the point which corresponds exactly with S1 ..

Hey i thought the same thing initially but lets think this over:

a wave is atrial systole
c wave is RV contraction ( when does it contract ? after TV closes)
x descent : blood leaves RV
V wave: RA filling, allows TV to bulge into RV , but it still remains closed, but it doesn't close then.
y descent : TV opens allowing blood to fill into the RV

so when do we hear the S1, when Atrio-ventricular valves close, hence MV and TV. and that is at the beginning of c wave.

hope this helped.
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Old 09-11-2011
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c wave!.......................
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Cardiovascular-, Clinical-Signs, Physiology-

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