A convenient alternative for monitoring opening pressure during multiple needle redirection

摘要

Editor-Triple monitoring (ultrasound, nerve stimulator, and injection pressure) during nerve block has been proposed as the standard to minimize nerve injury. Ultrasound improves safety in nerve block, but it is relatively user-dependent and hard to differentiate between intra- or extra-fascicular injection by current resolution. Besides, the expert opinion did not reveal that high-definition ultrasound alone could be the answer for safe paraneural injection in popliteal sciatic nerve block in the future. On the contrary, ultrasound guidance seems to encourage multiple injection and small readjustment of needle tip position has been suggested to ensure local anaesthetic spread to all trunks for supraclavicular block.