Which scale are people following to maintain CVP
mm of Hg
or
cm of H2O
Why did i get this doubt?
In CVP guided fluid resuscitation there exists a rule
"5-2" rule if you are using CVP
or
"7 -3" rule if you are using PCWP.
Now in 2 CME's I find that authors have used different units. One has opted for mm of Hg and the other the latter
It is very important to know because a CVP of 5 cm of H2O = CVP of only 2 mm of Hg.
Using the wrong scale may definitely be misleading