Spinal Anesthesia Versus Erector Spina Plane Block

After hemodynamic stability, the patient was placed in the lateral position and infiltration anesthesia with 2% lidocaine was applied. Following aseptic preparation of the skin and probe, a medium-frequency curvey USG transducer was first placed in the midline to visualize the transverse projection of the first lumbar (L1) vertebra, then moved 2.5 cm laterally in the parasagittal plane, after imaging the transverse process, in-plane spreading was injected. Hydrodissection was achieved on the TP of L1 by using a 5 cm, 21G peripheral nerve block needle just below the erector spina muscle with real-time imaging of the substance. Afterwards, a unilateral injection of 15 ml at T12 and L1 levels was applied to each segment with the needle directed at two different angles from the same insertion point.