jugular venous pressure tracing: "downward displacement of tricuspid"

[Ven0m]

fa2018 p. 282 says that the x descent is due to downward displacement of closed tricuspid valve during rapid ventricular ejection phase. doesn't the x descent represent right atrial relaxation? does anyone know what first aid is talking about?

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[Ven0m]

lumpity bumpity

 

[Save a life]

The x decent does represent atrial relaxation. However this is also when the tricuspid valve closes (the downward position) and when there is rapid ventricular ejection.

 

[Ven0m]

What do you mean "the downward position"? Aren't the tricuspid leaflets "down" when the valve is open?

 

[virajpatel]

I believe this is being used relative to what happens during the c wave where there is an upward displacement during isovolumetric contraction. Once the seminlunars open the tricuspid moves back down and atria relax.

 

[Ven0m]

I believe this is being used relative to what happens during the c wave where there is an upward displacement during isovolumetric contraction. Once the seminlunars open the tricuspid moves back down and atria relax.

Dang, that actually makes a lot of sense. Thanks man!