A Randomized Trial Evaluating Bioimpedance Spectroscopy Versus Tape Measurement in the Prevention of Lymphedema Following Locoregional Treatment for Breast Cancer (PREVENT)

Experimental: BIS Assessment

Patients will undergo measurements by trained staff. Measurements will be performed pre-op and at 3, 6, 12, 15\*, 18, 21\*, 24, and 36 months post-op. Measures include L-Dex, skin assessment and self-report forms. Patients with \< 6.5 L-Dex units change will continue follow-up for 36 months. Patients with an L-Dex value change ≥ 6.5 will undergo circumference measurement and begin treatment for 4 weeks with a 23-32 mmHg compression sleeve with gauntlet. At the end of 4 weeks patients will have their arms measured. Those demonstrating improvement will continue with follow up. Those not demonstrating improvement will be removed from the study and their medical oncologist or surgeon will be notified.~\*At discretion of the site PI or attending physicians.

Active_comparator: Tape Measure

Patients will undergo measurements by trained staff. Measurements will be performed pre-op and at 3, 6, 12, 15\*, 18, 21\*, 24, and 36 months post-op. Measures include arm volume (tape measure), skin assessment and self-report forms. Patients with no volume increase will continue follow-up for 36 months. Patients with a volume change of between ≥ 5% and \< 10% in the at-risk limb will undergo L-Dex testing and begin treatment for 4 weeks with a 23-32 mmHg compression sleeve with gauntlet. At the end of 4 weeks patients will have their arms measured. Those demonstrating improvement will continue with follow up. Those not demonstrating improvement will be removed from the study and their medical oncologist or surgeon will be notified.~\*At discretion of the site PI or attending physicians.