Influence of Chronic Vascular Diseases on Transcranial Doppler Profiles in Critically Ill Patients

Inclusion Criteria

• •Sedated patient under mechanical respiratory assistance
• •The patient is a man over the age of 50 or a woman over the age of 60
• •Hypercholesterolemia (LDL \> 1.6 g/L, HDL \< 0.4 g/L)
• •Arterial hypertension for over 10 years (treated or systolic arterial pressure \> 140 mmHG)
• •Type 2 diabetes for over 10 years
• •Active or former smoker in the past 3 years
• •History of cardiovascular event (peripheral artery disease, heart attack, stroke/transient ischemic attack over 3 months ago)
• •Chronic renal insufficiency with MDRD \< 30 ml/min/1.73m\^2
• •The included patient is not in group 1