Paravertebral Block (PVB) Combined Pectoral Musculature Blocks for Modified Radical Mastectomy (MRM)

Comparisons the Analgesia of Paravertebral Block Combined With Thoracic Wall Block Versus Paravertebral Block Alone for Modified Radical Mastectomy in Breast Cancer

Previous studies have shown that PVB reduces pain and postoperative nausea and vomiting after breast cancer surgery when used in addition to general anesthesia or sedation. However, major breast cancer surgery involves areas beyond the breast tissue, such as pectoral musculature.

Inclusion Criteria:

• The American Society of Anesthesiologists (ASA) Physical Status classification I to III
• 20 - 75 years of age
• female gender

Exclusion Criteria:

• body mass index (BMI) ≥ 35 kg/m2
• modified radical mastectomy not performed by the single surgeon (Ben Long Yu)
• anesthesia not performed by the single anesthesiologist (Nai Liang Li)