The goal of this interventional study is to asses echocardiographic variations in emergency department's elderly patients receiving red blood cell transfusion. The main questions it aims to answer are :
* is there a modification of echocardiographic parameters after red blood cell transfusion ? * which parameter is the most impacted by red blood cell transfusion ? Participants will have a transthoracic echocardiography before, just after and 15 minutes after red blood cell transfusion.
patient needing red blood cell transfusion
consent
social protection
fluid filing over 500 mL of crystalloids
transfusion in the last hour
Single group
transthoracic echocardiography
Diagnostic testE wave, A wave, e' and vdi measurement
E/A ratio modification
E/A ratio permits to estimate left ventricle pressure
E/e' ratio modification
E/e' assesses left ventricle diastolic function
E wave deceleration time
E wave deceleration time is a reflect of left atrium pressures
Velocity-time Integral (VTI) modification
Aortic velocity-time integral is the reflect of cardiac output
Lung score modification
Lung score permits to asses if extravascular water is present in lungs
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