A Prospective, Randomized, Controlled Trial of Paravertebral Block versus General Anesthesia Alone for Prosthetic Breast Reconstruction

Background: Paravertebral blocks have gained popularity because of ease of implementation and a shift toward ambulatory breast surgery procedures. Previous retrospective studies have reported potential benefits of paravertebral blocks, including decreased narcotic and antiemetic use. Methods: The authors conducted a prospective controlled trial of patients undergoing breast reconstruction over a 3-year period. The patients were randomized to either a study group of paravertebral blocks with general anesthesia or a control group of general anesthesia alone. Demographic and procedural data, in addition to data regarding pain and nausea patient-reported numeric scores and consumption of opioid and antiemetic medications, were recorded. Results: A total of 74 patients were enrolled to either the paravertebral block (n = 35) or the control group (n = 39). There were no significant differences in age, body mass index, procedure type, or cancer diagnosis between the two groups. Patients who received a paravertebral block required less opioid intraoperatively and postoperatively combined compared with patients who did not receive paravertebral blocks (109 versus 246 fentanyl equivalent units; p

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