Neurological injury following peripheral nerve blocks: a narrative review of estimates of risks and the influence of ultrasound guidance.

Background: Peripheral nerve injury or post-block neurological dysfunction (PBND) are uncommon but a recognized complications of peripheral nerve blocks (PNB). A broad range of its incidence is noted in the literature and hence a critical appraisal of its occurrence is needed.

Objective: In this review, we wanted to know the pooled estimates of PBND and further, determine its pooled estimates following various PNB over time.