When should the cannulation site be cleaned if a patient is prescribed topical anesthetic spray?

The cannulation site should be cleaned before applying the spray to ensure that the area is free of contaminants and pathogens. Proper cleaning reduces the risk of introducing bacteria into the bloodstream during the cannulation process. This step is crucial for maintaining aseptic technique in a clinical setting, as it creates a sterile environment for the procedure. By preparing the skin before any anesthetic is applied, the chance of infection is minimized, which is particularly important for patients with compromised health or those undergoing frequent procedures like dialysis.

Cleaning after the spray or at any time during the procedure would not be appropriately timed to ensure the effectiveness of the anesthetic while maintaining sterility at the site. Proper protocols dictate that cleaning is done first to set a safe stage for subsequent actions involved in cannulation.