What Are You Looking for in Pulse Pressure Variation?

Usually what you would do is you'd have to patient up at about 45 degrees. If there's an 11% increase in the pulse pressure that would suggest a positive response to passive leg raising and would suggest that the person is going to be fluid response of. You know again I think that if you look at most of the studies the ones where they could actually measure cardiac output directly their sensitivity and subacivacy were a little bit better than the pulse pressure variation but I think that both of them were kind of reasonable in terms of making clinical decisions.