CVP - which scale

Started by jafo1964, October 31, 2007, 04:55:41 PM

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jafo1964

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