Related Experiment Video
Updated: Jun 3, 2026

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
Published on: August 17, 2022
Assessment of fluid responsiveness during increased intra-abdominal pressure: keep the indices, but change the
Benoit Tavernier1, Emmanuel Robin
1Pôle d'Anesthésie Réanimation, CHU de Lille, and EA 1046, Université Lille II, IMPRT-IFR 114, Lille, France. btavernier@chru-lille.fr
Abstract:
Dynamic variables of fluid responsiveness are useful guides for fluid management in patients under controlled positive pressure ventilation. In the previous issue of Critical Care, Jacques and colleagues show that these variables remain reliable predictors of fluid responsiveness in a porcine model of intra-abdominal hypertension, but threshold values are higher than during normal intra-abdominal pressure. Their threshold values, however, cannot be applied to clinical practice. This study suggests that intra-abdominal pressure must be measured in critically ill patients, and 'supranormal' values of dynamic variables should be analyzed with caution. The 'fluid responsive part' of an increased dynamic variable in such patients may be estimated by measuring its change during a fluid challenge.
Related Concept Videos
Heart Failure VII: Nursing Interventions
Increased Intracranial Pressure ll: Pathophysiology
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Increased Intracranial Pressure l: Introduction
Acute Kidney Injury VI: Nursing Management
Assessment of blood pressure in brachial artery(two-step method)
