The objective of the prospective multicenter observational study consists in defining a difficult intravenous access score in adult, during the preoperative period. The main objective: the outcome of interest is defined as failure of cannulation on first attempt. The risk factors of failure of cannulation on first attempt will be described. Adjusted multivariate models will be constructed. A prediction model will be proposed according to the transparent reporting of a multivariable prediction model for individual prognosis or diagnosis (TRIPOD)
Age range
18 Years
Sex
ALL
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
failure intravenous placement on the first attempt
Timeframe: during the hour before surgery