Once you master the in-plane technique you’ll never feel comfortable placing lines using the out-of-plane approach. We walk you through how to make sure that the probe, the cannula and the vein are aligned. Remember: if you don’t see the tip of the needle, don’t proceed! Robin Lundén and Ola Borgquist are central line ninjas at Skåne University Hospital in Lund, Sweden. They would love to come to YOUR department for teaching on-site!