Pharmacokinetic Study on Echinocandins for Patients With Septic Shock Following Secondary Peritonitis (EPI Study)

Inclusion Criteria: * The emergency inclusion procedure was correctly applied according to French law (signature of consent form by a patient-designated trusted person or a family member, or a medical decision to proceed with patient inclusion if the latter two persons are unavailable) ---- OR ---- signature of the consent form by the patient * The patient must be insured or beneficiary of a health insurance plan * The patient is 18 years of age or older * The patient has beed admitted to the ICU for septic shock accompanying secondary peritonitis * Patient requiring antifungal treatment via echinocandins (caspofungin or micafungin) * A venous or arterial access for blood sampling is already in place for routine care Exclusion Criteria: * The patient is participating in an interventional study that may affect the results of the present study, or has participated in such a study within the past 3 months * The patient is under judicial protection, or is an adult under guardianship * The patient is pregnant, parturient or breastfeeding * Moribund patient * Known positive serology for human immunodeficiency virus (HIV) * Known positive serology for hepatitis C * Known diagnosis for tuberculosis