Breast cancer is the most common malignancy in women in the United States and is second only to lung cancer as a cause of cancer death. Breast surgery is commonly performed as a part of the management of breast cancer, is associated with considerable acute postoperative pain. Ultrasound guided Regional anesthesia is recommended to be a part of multimodal analgesia in order to manage the acute post-operative pain. New techniques are proposed to give adequate control of postoperative analgesia with less opioid needs in the first day postoperative. They include pectoralis nerve modified pectoralis, and erector spinae blocks.
The investigators will compare Modified pectoralis nerve block (Pecs II) plus transversus thoracic muscle plane (TTP) block versus Erector spinae block on morphine consumption during first 24 h following modified radical mastectomy.
