From the comments I am seeing from working FFICMs on the CoViD-19 frontline, getting fluids right is one of the keys to optimising outcome. This MS is real basic science, lots of equations from Michel and Curry, but I hope my contribution to a narrative account too will ease the read. If I had to draw up a Slogan it would be
Check that your fluid accountancy system is well thought through and delivering reliable balances
I feel humbled by the front line workers, I know Thankyou is not enough.