What do systematic reviews say?

Duration of sensory block (we included all studies describing duration of sensory block regardless of how it was described) · participants undergoing surgery with peripheral nerve block

Incidence of serious adverse events (we used the NIH definition of adverse events. A serious event includes death, a life‐threatening event that requires hospitalization or prolonged hospitalization, disability or congenital anomaly) · participants undergoing surgery with peripheral nerve block

Postoperative pain intensity in the immediate postobturation period (up to 72 hours), continuous (VAS) · participants undergoing surgery with peripheral nerve block