Inclusion Criteria:
For the Ambulatory Obese Control Group, the inclusion criteria are:
- Age ≥ 18 years;
- Patient followed in the nutrition service;
- Patient who benefited from an indirect calorimetry whatever the indication between 01/01/20 and 31/12/2020;
- BMI> 30.
For the COVID Group and the Resuscitation Control Group, the inclusion criteria are:
- Age ≥ 18 years;
- Patient having undergone a resuscitation stay
- Patient on mechanical ventilation (intubated or tracheotomized) during their stay in intensive care;
- Patient having benefited from an indirect calorimetry upon arrival in intensive care;
Only for the COVID Group:
- Patient hospitalized in intensive care for COVID 19 infection diagnosed by a positive PCR via nasopharyngeal sampling or endotracheal aspiration.
- Patient who has not yet carried out his post-resuscitation visit;
Only for the Resuscitation Control Group:
- Patient hospitalized in intensive care for an indication other than an infectious cause.
Exclusion Criteria:
Non-inclusion criteria for the Ambulatory Obese Control Group:
- Person deprived of liberty;
- Person subject to legal protection measures;
- Patient's opposition to participate in research.
The non-inclusion criteria for the COVID Group and the Resuscitation Control Group:
- For patients intubated during the resuscitation stay Fi02> 70% which does not allow a correct interpretation of the calorimetry;
- Pregnancy ;
- Person deprived of liberty;
- Person subject to legal protection measures;
- Opposition of the patient or the person of trust to participate in the research.
Only for the COVID Group:
- Contraindication to indirect calorimetry (claustrophobia for post-resuscitation patients where calorimetry is performed with a mask);
- Contraindication to bioimpedancemetry (electronic implants, limb amputation, weight <30kg or> 300kg);