Rhomboid Intercostal Block vs Erector Spina Plan Block for Peri-operative Analgesia in Mastectomy

Effectiveness of erector spinae plane block for analgesia in breast surgery was documented in previous studies. Rhomboid intercostal block may be beneficial for analgesia in breast surgery. The aim of this study is to compare the peri-operative analgesic effect of rhomboid intercostal block with erector spinae plane block in mastectomy operation. This trial was designed as prospective randomized single-blind study. The included patients will be assigned into two groups: RIB-Group where the patients will receive ultrasound-guided rhomboid intercostal block and ESP-Group where the patients will receive ultrasound-guided erector spinae plane block prior to the operation. Primary outcome will be peri-operative pain scores and secondary outcomes will be peri-operative opioid consumption and peri-operative hemodynamic effect of these blocks.