– Place the high-frequency linear probe with the medial end just on top of the linea alba
– Visualize the linea alba, the rectus abdominis, and the posterior rectus sheath (see next page)
– Use color Doppler to identify the epigastric arteries
– Advance the needle through the rectus abdominis muscle until the needle tip enters the space between the belly of the muscle and the posterior layer of the rectus sheath
– Inject 10 mL of local anaesthetic per side in adults. In children 0.5 mg ropivacaine/kg can be injected per side
