Since the first implantation of a percutaneous aortic bioprosthesis (TAVI) in 2002 (Cribier et al. Circulation 2002), TAVI occupies an increasing place in the management of aortic stenosis (AR) . Initially reserved for inoperable patients at high surgical risk, TAVI is also recommended in patients at intermediate risk, especially when a femoral approach (TF) is possible (Baumgartner et al. Eur Heart J. 2017).

Currently, there is no recommendation regarding length of stay after TAVI and practices are extremely heterogeneous. Despite the growing experience of centers, better patient selection and a reduction in complications, the length of stay after TAVI remains very high in France.

Faced with the great disparity observed between the centers, efforts are necessary to educate the centers in order to further reduce the length of stay after TF-TAVI. The aim of the study is to evaluate the effectiveness of an intervention based on training teams to reduce the length of stay after TF-TAVI.

Inclusion Criteria:

1. Patient over 18 years of age;
2. Patient hospitalized for TF-TAVI
3. Patient affiliated or benefiting from a health insurance scheme
4. Patient having read and understood the information letter and having signed the consent form.

Exclusion Criteria:

1. Proven pregnant woman (positive urine pregnancy test) or breastfeeding or absence of effective contraception (as defined by the WHO) or postmenopausal woman without confirmation diagnosis obtained (amenorrhea not medically induced for at least 12 months before the initiation visit) ; 1
2. Person deprived of their liberty by an administrative or judicial decision or person placed under the protection of justice / guardianship or curatorship
3. History of illness or psychological or sensory abnormality likely to prevent the subject from fully understanding the conditions required for participating in the protocol or preventing him from giving his informed consent