This is a prospective randomized controlled double-blind interventional study comparing the effect of pulsed-electromagnetic field device (PEMF), pectoral interfascial block (PIB), and placebo on postoperative pain control. This study has the interdisciplinary cooperation of the regional anesthesia group, and the breast and plastic surgery divisions. All female patients with breast cancer evaluated at Columbia University Medical Center (CUMC) who are undergoing unilateral or bilateral mastectomy with tissue expander reconstruction will be offered enrollment in this prospective study.
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Score on Visual Analog Scale (VAS) - 1 Hour Post-intervention
Timeframe: 1 hour post-intervention
Score on Visual Analog Scale (VAS) - 3 Weeks Post-intervention
Timeframe: 3 weeks post-intervention