Abstract
Passive leg raising: five rules, not a drop of fluid!
Highlights
In acute circulatory failure, passive leg raising (PLR) is a test that predicts whether cardiac output will increase with volume expansion [1]
The PLR effects must be assessed by a direct measurement of cardiac output and not by the simple measurement of blood pressure
Reliability of PLR is poorer when assessed by using arterial pulse pressure compared with cardiac output [1,5]
Summary
Passive leg raising (PLR) is a test that predicts whether cardiac output will increase with volume expansion [1]. The PLR effects must be assessed by a direct measurement of cardiac output and not by the simple measurement of blood pressure. Reliability of PLR is poorer when assessed by using arterial pulse pressure compared with cardiac output [1,5].
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