External Oblique Intercostal Block vs Subcostal Transversus Abdominis Plane Block in Open Nephrectomy

In group E, a needle will be used to pierce the skin, subcutaneous tissue then external oblique muscle to hydrodissect the fascial plane between external oblique muscle and intercostal muscles with 25 ml bupivacaine 0.25 % and 4 mg dexamethasone added to it.

In group T, a needle will be used to pierce the skin, subcutaneous tissue then rectus muscle and 25 ml of 0.25 % bupivacaine with 4 mg dexamethasone will be injected between rectus muscle and transversus abdominis muscle.