Does the PECS II block reduce morphine use after Breast Cancer surgery?
The PECS II block (also called the combined PSP/IPP block) is a regional anesthesia technique that numbs the chest wall. For breast cancer surgery, it is used alongside general anesthesia to manage pain and reduce the need for opioid painkillers like morphine. Multiple studies show that patients who receive a PECS II block use less morphine after surgery compared to those who receive standard pain control alone.
What the research says
A 2023 randomized controlled trial of 185 women found that those who received a combined PSP/IPP block (PECS II) needed significantly less rescue morphine in the first 48 hours after breast cancer surgery compared to those who received intravenous morphine before waking up 9. A 2021 trial of 60 patients also reported lower total morphine consumption in the PECS II block group 11. A systematic review and meta-analysis of 11 randomized trials involving 790 patients confirmed that PECS II provides longer analgesia duration and reduces postoperative morphine use in the first 24 hours compared to another regional technique (erector spinae plane block) 2. Additionally, a retrospective study of 107 patients found that PECS II block reduced opioid consumption in the post-anesthesia care unit 10. Together, these studies provide strong evidence that PECS II block is an effective opioid-sparing strategy for breast cancer surgery.
What to ask your doctor
- Is the PECS II block an option for my breast cancer surgery?
- How much could this block reduce my need for morphine or other opioids after surgery?
- What are the possible risks or side effects of the PECS II block?
- Will the block affect my recovery time or ability to go home the same day?
- Is the PECS II block available at the hospital where I will have my surgery?
This question is drawn from common patient questions about Anesthesiology & Pain Medicine and answered using cited medical research. We do not provide individualized advice.