Diaphragm-sparing erector spinae plane block for shoulder surgery: emerging evidence

To the Editor We read with great interest the letter by Nair and Diwan[1][1] describing the T2–T3 erector spinae plane block (ESPB) as a diaphragm-sparing block for shoulder surgeries. Although the rebuttal by Tran et al [2][2] questioned the validity of their claim due to the lack of supporting