Figure 1From: Functional evaluation and practice survey to guide purchasing of intravenous cannulae Setup up to indirectly measure resistance by recording the pressure generated through an intravenous cannula’s needle at various flow rates. Consisting of A: intravenous cannula; B: 3-way tap; C: 50 ml syringe; D: Pressure transducer; E: Syringe driver.Back to article page