Observational Study of Oxygen Delivery During a Fractional Fluid Expansion

University Hospital, Caen20 enrolled

Overview

Fluid expansion during cardiocirculatory insufficiency was helped by cardiac output monitoring. However, the goal of fluid expansion was to increase the oxygen delivery, which consider cardiac output, but also Haemoglobin which decrease during a fluid challenge. The maximalization of cardiac output could decrease the oxygen delivery if the haemodilution was too wide. The aim of this study was to describe the oxygen delivery during a fluid expansion conducted for cardiac output maximalization, following actual guidelines.

One group of 20 anticipated patients

Study Type

OBSERVATIONAL

Enrollment

Conditions

Hypovolemia Impaired Oxygen Delivery Cardiac Output, Low

Interventions

hydroxyethylstarch 130/0.4

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Adults over 18 years * Patients in intensive care after cardiac surgery under mechanically ventilation and with oesophageal Doppler Exclusion Criteria: * Arrythmia * Pregnancy or childrens * Patients without cardiac output monitoring with oesophageal Doppler * Patients without medical indication for fluid expansion * Urgency surgery

Outcomes

Primary Outcomes

Measurement of oxygen delivery

Retrospective calculation of oxygen delivery (ml.min.m-2)during a fractional fluid expansion every 100ml of hydroxyethyl starch until cardiac output maximalization with oesophageal Doppler and arterial gazes (for PaO2 and Haemoglobin)from arterial line.

Time frame: only during the fluid challenge

Secondary Outcomes

Study of central venous saturation

Central venous gazes after each mini fluid challenge until cardiac output maximalization, from a central line