Long-term Efficacy of Pectoserratus Plane Block (PSPB) for Prevention of Post-mastectomy Pain Syndrome: Extended Follow-up From a Randomized Controlled Trial.

Objectives: Pectoserratus plane block (PSPB) leads to lower postoperative pain intensity. We examined whether PSPB could also reduce the incidence of post-mastectomy pain syndrome (PMPS) in women undergoing breast cancer surgery.

Methods: We performed an extension study of a randomized trial that compared PSPB versus control in women undergoing mastectomy.