Passive leg raise test: helpful maneuver, or ICU parlor trick?
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Patients who arrive at the hospital with hypotension will almost all receive intravenous fluid resuscitation (one hopes). When signs of hypoperfusion occur later in a patient's hospital course, it can be much harder to decide if additional fluid will be helpful. Physical exam is unreliable, and no available technology can accurately identify how much water is in a patient's body, or in which vascular or extra-vascular compartments. In response, clinical researchers have embarked on dozens of quests to identify predictive methods of so-called fluid responsiveness: whether a patient's blood pressure (or cardiac output) will improve with an IV fluid bolus. A
Passive leg raise test: helpful maneuver, or ICU parlor trick?
Passive leg raise test: helpful maneuver, or…
Passive leg raise test: helpful maneuver, or ICU parlor trick?
Patients who arrive at the hospital with hypotension will almost all receive intravenous fluid resuscitation (one hopes). When signs of hypoperfusion occur later in a patient's hospital course, it can be much harder to decide if additional fluid will be helpful. Physical exam is unreliable, and no available technology can accurately identify how much water is in a patient's body, or in which vascular or extra-vascular compartments. In response, clinical researchers have embarked on dozens of quests to identify predictive methods of so-called fluid responsiveness: whether a patient's blood pressure (or cardiac output) will improve with an IV fluid bolus. A