What is this article about?
Intravenous cannulation in prehospital settings enables the delivery of medicine, intravenous fluids, anaesthesia and other interventions prior to patient transportation. However, cannulation may be difficult and is associated with a high risk of complications. If the cannulation fails, this may further delay treatment and transport, potentially resulting in adverse patient outcomes. How do you tell whether cannulation will be ‘difficult’, and how does this affect patient management and clinical decision-making?