Dorsal Penile Nerve Block via Perineal Approach, an Alternative to a Caudal Block for Pediatric Circumcision: A Randomized Controlled Trial

Figure 1

The position of the ultrasonic probe in the dorsal penile nerve block via perineal approach. For all patients of Group DPNB, a lithotomy position was adopted to fully expose the perineum. A linear array probe (5 to 10 MHz or 10-20 MHz) was used for an ultrasound guiding procedure. The probe was placed beneath the skin of the scrotum in a coronal parallel plane and scanned by a Sonosite M-Turbo (SonoSite, Bothell, WA, USA).