drdoomConstriction of peripheral (cutaneous) arterioles/capillaries in response to cold surroundings is an attempt to reduce heat loss & maintain internal body temp; it is not at all coupled with splanchnic vasoconstriction. In fact, the peripheral vasoconstriction is trying to “re-route” blood to more internal/visceral compartments; simultaneous splanchnic vasoconstriction would impede that very process! +62019-06-08T21:50:21Z
bubblesAh, okay! I got led off track because I had a bunch of super hard practice questions asking about hepatorenal syndrome and how the constriction of sphlancnic vessels might trigger renal ischemia.
Do you know if there would ever be a time when sphlancnic vasoconstriction occur outside of hepatorenal syndrome?+2019-06-08T22:01:35Z
drdoom@bubbles i would think only in cases of catastrophic shock (when the body is doing everything it can to maintain central tension; pressure to vital organs like heart,kidneys); in those cases, i could see the body sacrificing visceral flow as an "option of last resort"+2019-06-09T16:36:18Z
usmleuser007correction: yea it does address the water temp but the main take away is increased preload+2019-06-18T17:49:38Z