Environmental awareness is leading medical field to question its responsibility and possibilities for action.

Drug residues can have a major environmental impact as per their bioaccumulation, toxicity and persistence characteristics, depending on where they are discarded. In France, drug residues should be disposed of by incineration, but in practice this is not systematic. Moreover, data on drug wastage in the operating rooms by anesthesia department are rare.

The GAME-OvBLOC observational study aim to evaluate drug wastage in the operating rooms by anesthesia department in France and to propose ways of improving health care practices.

Observational study with data collection over a 24-hour business day. Data collected refer to healthcare team's practices and patients.

Inclusion Criteria:

• All patients who will need an anesthesia act in operating room during a 24 hours period

Exclusion Criteria:

• Patient opposition to participate in the study or parents opposition if the patient is a child or patient family opposition if the patient is not capable of being informed

All patients who will need an anesthesia act in operating room during a 24 hours period