Peripheral venous access (PVA), although commonly used, can be a difficult procedure for patients with precarious venous capital. The difficulty of insertion can lead to multiple attempts, with the consequences of pain, anxiety, delayed management and worsening of the potentially already precarious venous capital. One study assessed the risk of failure according to a score based on venous status criteria. This study first established a link between venous status criteria and the risk of failure. The criteria defined as determinants were used to establish a venous status score. The data were then repeated by analyzing the success rate as a function of the scale score. A clear link between score and risk of failure was established. It seems worthwhile to evaluate the impact of implementing this scale prior to the placement of a peripheral venous line.

The hypothesis is that obtaining a score predictive of failure would modify the therapeutic attitude of the registered nurse. They would opt for techniques that would increase their chances of success. This in turn would lead to a reduction in unsuccessful attempts, which generate pain and anxiety for the patient. Preserving venous capital by increasing first-attempt success is both a health issue for the patient and a guarantee of quality of care.

Inclusion Criteria:

• Male or female patient of legal age included in a care program requiring a VVP;
• Fluency in French
• Patient affiliated to a social security scheme;
• Written, signed and dated informed consent.

Exclusion Criteria:

• As the A-DIVA scale specifies a search for venous access to the upper limb, any patient without an upper limb or with a condition that contraindicates VVP placement in the upper limbs will be excluded;
• Patients treated as emergencies;
• Patients with a language barrier or known significant cognitive or psychiatric disorders;
• Patients under guardianship, curatorship, deprivation of liberty or legal protection;
• Pregnant or breast-feeding women.