Abu Elyazed MM, et al. - Among patients scheduled for modified radical mastectomy (MRM), researchers assessed the pain relieving efficacy of continuous pectoral nerve block (PEC) vs that of the continuous thoracic paravertebral block (TPVB) and the intravenous opioid analgesia. Participants were 90 female patients aged 20 to 70 years, American Society of Anesthesiologists I to III, receiving unilateral MRM. Per findings, continuous PEC and continuous TPVB resulted in decrease in the postoperative morphine use vs the intravenous opioid analgesia among patients receiving MRM with greater decrease in TPVB and with no increased adverse impacts.