Passive leg raise
Passive leg raise
The Passive leg raise (pronunciation: /ˈpæsɪv lɛg reɪz/), also known as PLR, is a simple bedside test performed to assess the fluid responsiveness in critically ill patients[1].
Etymology
The term "passive" originates from the Latin word "passivus", meaning "suffered", and "leg" and "raise" are derived from the Old Norse "leggr" and the Old English "rǣran" respectively. The term collectively refers to the action of lifting the patient's legs without their effort.
Procedure
The Passive leg raise involves lifting the patient's legs to a 45-degree angle while they are lying flat on their back. This maneuver increases the venous return to the heart and effectively acts as a fluid challenge[2]. The patient's hemodynamic response to this maneuver can help determine whether they would benefit from further fluid administration.
Related Terms
- Fluid responsiveness: The ability of a patient's cardiovascular system to increase cardiac output in response to fluid administration.
- Fluid challenge: A diagnostic test used to assess fluid responsiveness by administering a bolus of fluid and observing the patient's hemodynamic response.
- Hemodynamic response: The change in blood flow or blood pressure in response to a stimulus or intervention.
See Also
References
External links
- Medical encyclopedia article on Passive leg raise
- Wikipedia's article - Passive leg raise
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