摘要
Fluid challenge is a common diagnostic method to help the physician detennine fluid responsiveness, which is an important component of fluid management in critically ill patients）H Raising legs of a patient induces the transfer of a variable amount of blood （approximately 200-300 ml） contained in the venous reservoir from the limb to central venous compartment. According to Franck-Starling curve, this transient increase of preload might lead to an increase in cardiac output （CO） in thture responders resulting from their preload-reserve status. Many clinical studies have validated passive leg raising （PLR）, and the advantage of PLR is attractive in Intensive Care Unit （ICU）. Recently, PER has been suggested as a simple and potential method to predict fluid responsiveness, which is similar to an ＂auto-fluid challenge＂ without a drop of fluid. However, one study revealed poor application of PLR in the real world, We acknowledged that the lack of education on PLR would result in the current practice. On the other hand, the application of PLR might be not simple in clinical practice, and the holy grail of fluid responsiveness still needs to be discovered. The standard of PLR has not been established, and some questions of PLR merit discussion.
Fluid challenge is a common diagnostic method to help the physician detennine fluid responsiveness, which is an important component of fluid management in critically ill patients）H Raising legs of a patient induces the transfer of a variable amount of blood （approximately 200-300 ml） contained in the venous reservoir from the limb to central venous compartment. According to Franck-Starling curve, this transient increase of preload might lead to an increase in cardiac output （CO） in thture responders resulting from their preload-reserve status. Many clinical studies have validated passive leg raising （PLR）, and the advantage of PLR is attractive in Intensive Care Unit （ICU）. Recently, PER has been suggested as a simple and potential method to predict fluid responsiveness, which is similar to an ＂auto-fluid challenge＂ without a drop of fluid. However, one study revealed poor application of PLR in the real world, We acknowledged that the lack of education on PLR would result in the current practice. On the other hand, the application of PLR might be not simple in clinical practice, and the holy grail of fluid responsiveness still needs to be discovered. The standard of PLR has not been established, and some questions of PLR merit discussion.
