Comparison of Erector Spina Plane Block and Thoracic Epidural Block

After skin infiltration with 2 ml of 2% lidocaine, an 18 G tuohy needle will be directed between the erector spina muscle and the transverse process of the T4 vertebra using the in-plane technique. The location of the needle will be confirmed by hydrodissection with saline after touching the transverse process. After the plan open, 5 ml of 2% lidocaine, 10 ml of 0.5% bupivacaine and 10 ml of saline, including hydrodissection, will be given in a total amount of 25 ml. Then a 20-G epidural catheter will be inserted 3-4 cm and fixed.

After skin infiltration with 2 ml of 2% lidocaine, an 18 G tuohy needle will be entered through the T4-5 interspinous space (median or paramedian approach). After reaching the thoracic epidural area by loss of resistance method, the epidural catheter will be advanced and fixed to remain 3-4 cm in the epidural area. Following the test dose (2 ml of 2% lidocaine), 3 ml of 2% lidocaine, 5 ml of 0.5% bupivacaine and 5 ml of saline will be administered intermittently in a total volume of 15 ml.