Fig. 1

Illustration of US-guided TAP and RS blocks. (A) RS-TAP block consists of right subcostal TAP, right lateral TAP, and bilateral RS block. (B) Bi-TAP block consists of right subcostal TAP and bilateral TAP block. The white arrow head indicates block needle. Rt., right; Lt., left; RS, rectus sheath; RAM, rectus abdominis muscle; TAP, transversus abdominis plane; TAM, transversus abdominis muscle; EOAM, external oblique abdominis muscle; IOAM, internal oblique abdominis muscle; US, ultrasound