A 5 ml loss of resistance syringe with a balloon indicator: the balloon is inflated before the needle advances and deflates when the tip reaches the epidural space, so the moment is seen as well as felt.
Four steps: check the syringe is intact and fill it with about 5 ml saline, remove the stylet and connect the syringe tightly to the epidural needle, push the plunger to the 2 ml mark so the balloon inflates, then advance the needle slowly without moving backward. The balloon deflating promptly is the endpoint.
One volume, 5 ml, with the order code ILOR005. The pressure held in the balloon has a deviation of 3 kPa.
