PLR in a Good Helath After 24 Week of Preganancy

fluid resuscitation is one of the bases of strategies in ICU to take in charge patients , one of the technique to evaluate preload charge , is Passive leg raising, that allows reliable prediction of fluid responsiveness even in patients with spontaneous breathing activity or arrhythmias .In recent years, hemodynamic response to passive leg raising (PLR) has been popularized as a dynamic test of preload responsiveness [1]. This manoeuvre provides an "auto-fluid challenge" which is rapid, transient and reversible. PLR transfers blood contained in the venous reservoir of the lower extremities to the central venous compartment leading to a transient increase in preload and an increase in cardiac output by Frank-Starling mechanism in preload responsive individuals.untille now the usseuful of PLR in Pregnancy, and also The validity of dynamic measurements of preload to predict fluid response during pregnancy are note clear in littérature .

Inclusion Criteria:All Pregnante Women in good health after 24 week of preganancyExclusion Criteria:All young women under 18 years oldunhealthy women