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Effects of Acute Systemic Inflammation on Arterial Stiffness and Microcirculation. — IRIGA  

Severe Sepsis Clinical Trial

Official title:
Effects of Acute Systemic Inflammation on Arterial Stiffness and Microcirculation.

Clinical Trial Summary

This study aims to assess the effect of acute inflammation on arterial stiffness and microcirculation. Patients with severe sepsis will be compared with age-, sex- and cardiovascular risk factors-matched controls.

The primary outcome is the carotid-femoral pulse wave velocity. The other outcome measures are: systemic hemodynamics (systolic, diastolic, mean and pulse blood pressures, heart rate, cardiac output, left ventricular ejection fraction, systemic vascular resistances), central hemodynamics (aortic systolic, diastolic, mean and pulse pressures, and augmentation index), thenar tissue oxygen saturation, biological makers of inflammation (plasma fibrinogen, C-reactive protein, interleukin-6, matrix metalloproteinases -2, -9, tissue inhibitor of metalloproteinase 1), and plasma catecholamine concentrations (epinephrine, norepinephrine).

Clinical Trial Description

In a model of acute inflammation induced by salmonella typhi vaccination in healthy volunteers, it has been shown that acute systemic inflammation increased arterial stiffness. Since increased arterial stiffness (assessed by carotid-femoral pulse wave velocity) is an independent prognosis marker of cardiovascular risk in many chronic diseases such as hypertension, renal failure or diabetes mellitus, it could also be a marker of severity in acute inflammation states. Severe sepsis is a leading cause of hospitalisation in intensive care units, and constitutes a state of acute inflammation. It remains however to confirm that arterial stiffness is increased in this clinical conditions before evaluating its prognosis value.

This study aims to assess the effect of severe sepsis on arterial stiffness and microcirculation. Patients with severe sepsis will be compared with age-, sex- and cardiovascular risk factors-matched controls.

The primary outcome is the carotid-femoral pulse wave velocity. The other outcome measures are: systemic hemodynamics (systolic, diastolic, mean and pulse blood pressures, heart rate, cardiac output, left ventricular ejection fraction, systemic vascular resistances), central hemodynamics (aortic systolic, diastolic, mean and pulse pressures, and augmentation index), thenar tissue oxygen saturation, biological makers of inflammation (plasma fibrinogen, C-reactive protein, interleukin-6, matrix metalloproteinases -2, -9, tissue inhibitor of metalloproteinase 1), and plasma catecholamine concentrations (epinephrine, norepinephrine). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01556373
Study type Observational
Source Rennes University Hospital
Contact
Status Completed
Phase
Start date February 23, 2012
Completion date April 16, 2015
View Details
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