The Efficacy and Safety of Landmark-guided Compared to Ultrasound-guided Erector Spinae Plane Block Techniques for Analgesia in Female Patients After Breast Surgery.

The ESPB is a truncal block guided by ultrasound, involving the injection of local anesthetic beneath the erector spinae muscle (ESM), positioned between the ESM and the transverse process (TP) of the vertebra.

The ESPB is a truncal block guided by anatomical landmarks, involving the injection of local anesthetic beneath the erector spinae muscle (ESM), positioned between the ESM and the transverse process (TP) of the vertebra.