Post-operative mortality in case of scheduled surgery is 3% in France (Lancet 2013) mainly due to cardiovascular or respiratory complications, by decompensation of pre-existing pathologies.

Complications due to the medical practice are the third cause of morbidity (BMJ, 2016). More than half are preventable and are mainly observed in surgical patients. In conventional hospitalization, excluding intensive care, monitoring is done discontinuously for most of the patients, which does not allow early diagnosis of a vital cardiovascular or respiratory failure.

Diagnosis and late treatment do not allow good recovery. The early identification of a vital failure by the continuous monitoring of three simple physiological parameters (SpO2, heart rate and respiratory rate) would allow faster management by the hospital staff and a reduction in immediate and possibly delayed postoperative mortality.

The challenge of this research is to transpose in an ordinary hospitalization unit the continuous monitoring of vital functions carried out in intensive care by the continuous measurement of simple parameters using the "SMART ANGEL Intra-hospital" System's (connected medical devices and alerts).

Inclusion Criteria:

• Age ≥ 18 years
• Patients receiving a scheduled non-ambulatory surgical or interventional procedure
• Affiliation to a social security scheme, beneficiary or entitled person (excluding AME)
• Patient's written consent or of the trusted person in case of physical incapacity

Exclusion Criteria:

• Inclusion in emergency situations
• ASA1 patient (without associated pathology)
• Patient with a multi-drug resistant germ in isolation
• Known linguistic inability of the patient to understand the study
• Known pregnancy or breastfeeding woman
• Patients with implantable pacemakers, implantable defibrillators or neurostimulators.
• Person under legal protection or unable to give consent
• Person deprived of liberty by judicial or administrative decision