Monitoring Tissue Perfusion in Critically Ill or High-risk Surgical Patients

Inclusion Criteria

• •1. 18 years of age or more,
• •2. Male or female,
• •3. High-Risk surgical patient,
• •4. Life expectancy expected to exceed 72 hours,
• •5. Willing to participate and signed informed consent,
• •6. Affiliation to the French social security system.
• •1. Pregnant or lactating woman,
• •2. History of recent urological surgery (bladder surgery, prostate surgery…),
• •3. Known stricture or "impossible insertion" last hospitalization,
• •4. Traumatic injury to the lower urinary tract,
• •5. History of radiotherapy of pelvic or genital area,
• •6. Genital malformation (Hypospadias…).