Fig. 2

Procedures for one puncture of the RSB + TAPB block and the subcostal TAP block. A: Graphic representing probe position in the undercostal about one-puncture of RSB and TAPB (The red point is the needle point; Costal margin is indicated by the white line). B: Anatomical diagram of one-puncture of RSB and TAPB (The red line is the block path of RSB; The blue line is the block path of TAPB). C: The ultrasound images of one-puncture of RSB and TAPB injection path (White arrows indicate the needle injection path). D: The ultrasound images of the RSB by the one-puncture nerve block. E: The ultrasound images of continuing to break through the posterior layer of the rectus abdominis sheath by the one-puncture nerve block (The red arrow indicates the posterior layer of the rectus abdominis sheath). F: The ultrasound images of the spread of local anesthetic after a successful one-puncture nerve block. G: The ultrasound images of the subcostal TAP. H: The ultrasound images of the spread of local anesthetic after a successful subcostal TAP nerve block. RAM, the rectus abdominal muscle. EOM, the external oblique muscle. IOM, the internal oblique muscle. TAM, the transverse abdominis muscle. LA, local anesthetic