“In a Nutshell” : the beauty of human physiology
Although this is just a swishing and sloshing of stuff in the ICU, there is intricate beauty in this clip … just activate the “replay” function of the movie player your PC uses.
The urine output flow is demonstrated in the clear urine “moving along” in the urimeter set.
The blood sloshing around represents the collection moving around to the beat of the HR.
Between these 2 fluid volumes sloshing around, is the implied requisite stroke volume per heart beat.