On the mechanism of action of pneumatic compression devices: Combined magnetic resonance imaging and duplex ultrasound investigation Fedor Lurie, MD,

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Presentation transcript:

On the mechanism of action of pneumatic compression devices: Combined magnetic resonance imaging and duplex ultrasound investigation Fedor Lurie, MD, PhD, Victoria Scott, BSc, Hyo-Chun Yoon, MD, PhD, Robert L. Kistner, MD Journal of Vascular Surgery Volume 48, Issue 4, Pages 1000-1006 (October 2008) DOI: 10.1016/j.jvs.2008.04.009 Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 1 For the interface pressure measurement, the pressure-sensing element (Tactilus Human Body Interface sensor system, Sensor Products Inc, Madison, NJ) was wrapped between the volunteer's skin and the garment of intermittent pneumatic compression (IPC) devices. Journal of Vascular Surgery 2008 48, 1000-1006DOI: (10.1016/j.jvs.2008.04.009) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 2 Results are shown for the spatial distribution of the interface pressure the during compression cycle for the (A-C) WizAir (Medical Compression Systems, Inc, Ltd, Or-Akiva, Israel) and (D-F) VenaFlow (AirCast Inc, Summit, NJ) intermittent pneumatic compression devices: inflation (A, WizAir; D, VenaFlow), maximally inflated garment (B, WizAir; E, Venaflow), and deflation (C, WizAir; F, VenaFlow). The category axis represents interface pressure in mm Hg, and the value axis represents percentage of surface under the garment with certain interface pressure. Mean values are shown with the error bars representing the standard error of the mean. Journal of Vascular Surgery 2008 48, 1000-1006DOI: (10.1016/j.jvs.2008.04.009) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 3 Images show the spatial distribution of the interface pressure by a maximally inflated garment. Color represents the magnitude of pressure from 0 to 150 mm Hg, as on the scale at the center. Journal of Vascular Surgery 2008 48, 1000-1006DOI: (10.1016/j.jvs.2008.04.009) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 4 Magnetic resonance images are shown at (A) baseline and with maximally inflated garment of (B) VenaFlow (AirCast Inc, Summit, NJ) and (C) and WizAir (Medical Compression Systems, Inc, Ltd, Or-Akiva, Israel). Journal of Vascular Surgery 2008 48, 1000-1006DOI: (10.1016/j.jvs.2008.04.009) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions