Efficacy of Bi-level ESPB Application in Patients Undergoing VATS

One-level Erector Spinae Plane Block will be performed unilaterally, under US guidance, before the surgical operation, after the induction of anesthesia, and when the patient is placed in the lateral decubitus position. In applications, 30 ml of 0.25% bupivacaine will be injected at the T5 level.

Bi-level Erector Spinae Plane Block will be performed unilaterally, under US guidance, before the surgical operation, after the induction of anesthesia, and when the patient is placed in the lateral decubitus position. In applications, 15 ml of 0.25% bupivacaine at T4 level and 15 ml of 0.25% bupivacaine at T6 level will be injected.