Evaluation of A-DIVA Score Effectiveness at Admission for Preserving Venous Capital in Patients With Difficult Access

This research evaluates the importance of assessing the venous capital access of hospitalized patients prior to the placement of an intravenous infusion, in order to save time in initiating therapeutic treatment and to prevent or reduce the number of venipunctures and the associated inconveniences (pain, discontinuous treatment monitoring). This approach aims to preserve the patient's venous capital. In the proposed study, investigators will evaluate the patients' venous capital using the Adult-Difficult IntraVenous Access (A-DIVA) tool upon hospital admission and during hospitalization before any peripheral intravenous (IV) catheter placement. During the inclusion visit, after obtaining informed consent, patients will be randomized into one of two groups: * Group A: Patients will undergo an evaluation of their venous capital by a study nurse using the Adult-Difficult IntraVenous Access (A-DIVA) tool prior to any peripheral IV catheter placement during hospitalization. * Group B: Patients will not undergo an evaluation of their venous capital using the Adult-Difficult IntraVenous Access (A-DIVA) tool prior to peripheral IV catheter placement. They will receive standard care as routinely provided in the hospital ward.