An observational study in Vasoplegia Syndrome, sponsored by Centre Hospitalier Universitaire, Amiens. Completed at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-25.
Sponsored by Centre Hospitalier Universitaire, Amiens · Observational
Dynamic arterial elastance (Eadyn) has been proposed as an indicator of arterial tone that can predict norepinephrine-dependent arterial pressure. Eadyn is calculated using the ratio of respiratory pulse pressure variation (PPV) over the respiratory stroke volume variation (SVV). Guinot et al demonstrated a decrease in the duration of norepinephrine treatment with the use of Eadyn. To date, studies that have validated Eadyn at bedside have used cardiac output (CO) calibrated pulse contour analysis (PiCCO™, Pulsion™) or oesophageal doppler. Such monitoring systems need dedicated and specific arterial line and venous access that may limit their use at bedside. In addition to CO calibrated pulse contour analysis, CO uncalibrated pulse contour analysis has been developed and is considered less invasive. Nevertheless, one limitation of the latter CO monitoring is inaccuracy of CO measurement in patients who are being treated with norepinephrine. These limitations may affect the predictability of Eadyn. We conducted a prospective study in a university hospital ICU. Patients with vasoplegic syndrome for whom the intensive care physician planned to decrease the norepinephrine dosage were included. Hemodynamic and uncalibrated pulse contour analysis (Volume view, FloTrac, Edwards Lifescience, Irvine) values were obtained before and after decreasing the norepinephrine dosage. Responders were defined by a >10% decrease in mean arterial pressure (MAP).
one group Patients with vasoplegic syndrome
Inclusion criteria were all consecutive patients with a diagnosis of vasoplegic syndrome, treated with norepinephrine, for whom the attending physician decided to decrease the norepinephrine dosage. The vasoplegic syndrome was defined as persistent arterial hypotension with normal or high cardiac output and low systemic vascular resistance
Exclusion Criteria:
Exclusion criteria were patients treated with epinephrine and/or dobutamine, arrhythmia, intra-abdominal hypertension and patients younger than 18 years.
Patients with vasoplegic syndrome for whom the intensive care physician planned to decrease the norepinephrine dosage were included. Hemodynamic and uncalibrated pulse contour analysis (Volume view, FloTrac, Edwards Lifescience, Irvine) values were obtained before and after decreasing the norepineprhine dosage. Responders were defined by a \>10% decrease in mean arterial pressure (MAP).
Dynamic arterial elastance (Eadyn) defined as the ratio of PPV/SVV calculated from uncalibrated pulse contour analysis
Time frame: 60 minutes
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Centre Hospitalier Universitaire, Amiens