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Interface Pressures Produced by Two Different Types of Lymphedema Therapy Devices

HN Mayrovitz, PhD, is Professor of Physiology, College of Medical Sciences, Nova Southeastern University, 3200 S University Dr, Ft Lauderdale, FL 33328 (USA)

Address all correspondence to Dr Mayrovitz at: mayrovit{at}nova.edu

Background and Purpose: Sequential compression is used to manage lymphedema, but little is known about pressures delivered to the therapeutic targets. This study characterized actual pressures delivered by a traditional compression pump (Lympha Press [LP]) and one using an alternate compression pattern (Flexitouch [FT]).

Subjects: Ten adults who were healthy volunteered to participate in the study.

Methods: Pressure-time along the forearm was measured using a 256–pressure sensor array during the pressure cycling of each device. Device assessments were separated by at least 48 hours.

Results: Pressure patterns and magnitudes produced by the 2 devices differed considerably. The FT pressure pattern displayed a rapid rise and fall, progressing from the wrist toward the elbow. The LP pressure rose slower and was sustained at a higher level during its inflation cycle. Pressures delivered with the LP were significantly greater than those delivered with the FT.

Discussion and Conclusion: The pressure patterns and magnitudes on treated limbs depend on the device. These differences should be considered before selecting a device for a specific patient.