portacaval anastomosis

[Fatalis]

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just wondering with the increase in blood flow to the IVC via the shunts created, will that increase preload in the right atria/ventricle?

 

[Fatalis]

anyone?

 

[govnah]

I don't know for sure, but in theory any blood shunted to the caval system would have eventually made it to the right heart anyway (via portal system), so I wouldn't think it would significantly raise right heart preload. There may be a slight effect, since the blood is now going through a lower resistance circuit.

 

[sanj238]

While its true there is a decrease in resistance I wouldnt expect it to have an impact on preload since this is merely replacing the high resistance portal htn.