peripheral artery disease Archives - ACI MedicalACI Medical

Recent Research in IPC for Lower Limb Ischemia

Lower limb ischemia caused by Peripheral Arterial Disease is a hot topic in medicine. Intermittent pneumatic compression therapy is being used to treat patients with ischemic limbs where conventional treatments (namely surgery) fail or cannot be used.

If you are interested in learning more about arterial pneumatic compression pump therapy to treat ischemic ulcers, ACI Medical encourages you to explore the growing research surrounding the ArtAssist® device.

The latest research comes from a presentation at the Society of Vascular Surgery Annual Meeting in June 2015. Excerpt from abstract:

Enhancing Neovascularization in Chronic Limb-Threatening Ischemia

Objectives: The shear stress stimulus needed to switch on arteriogenesis, attenuated in chronic limb-threatening ischemia (CLI), can be restored with intermittent pneumatic compression (IPC). IPC also increases inflow of
oxygenated nutritive blood, clears waste products of metabolism, and enhances the traffic of elements needed for neovascularization (NV). The circulating progenitor cell (CPC) population is also depressed in CLI. We hypothesize that NV will be promoted by IPC and CPC mobilization.

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Additional research begins to explore the effect of leg IPC on nitric oxide (NO) levels in the arm. Excerpt from abstract:

The effect of intermittent pneumatic compression of legs on the levels of nitric oxide related species in blood and on arterial function in the arm

Background: Intermittent pneumatic compression (IPC) of legs exerts beneficial local vascular effects, possibly through local release of nitric oxide (NO). However, studies demonstrating systemic transport of nitrogen oxide species and release of NO prompt the question of whether IPC could also exert nonlocal effects. We tested whether IPC (1) affects systemic levels of nitrite, S-nitrosothiols and red blood cell (RBC) NO, and (2) exerts vasoactive effects in the brachial artery (BA), although this hypothesis-generating pilot study did not investigate cause and effect relationship between (1) and (2).

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Additional studies surrounding the treatment of lower limb ischemia with IPC can be found on the Clinical Studies page under the Limb Salvage & CLI heading.

Contact ACI Medical to discuss all aspects of arterial IPC treatment, from ongoing research to how patients can easily obtain the ArtAssist® device for home use:

Toll Free (888) 453-4356 or info@acimedical.com

Endothelial Activation is Central to Collateral Artery Growth in PAD Patients

Collateral artery growth is possible for patients with critical limb ischemia with the use of external pneumatic compression therapy. Many vascular specialists are skeptical of this notion because it sounds contradictory: how can a completely non-invasive treatment improve microvascular circulation to the point that the limb is saved?

Efficacy lies in the activation of the endothelium by way of exerting shear stress on the vessel.

Vascular specialists have good reason to be wary of most compression pumps claiming to promote better circulation and limb salvage. This is because the developers of such pumps did not design their systems with the endothelium in mind, preferring instead to modify lymphedema pumps or DVT prophylaxes to exert more pressure on the patient’s limb at slow compression and decompression rates (two or more seconds). Little clinical evidence exists to support this technique and little thought was put into this type of system’s design for arterial disease treatment. Furthermore, with such compression pumps, little or no pressure is applied to the foot or watershed areas, limiting cutaneous blood flow in these regions.

Now, for the endothelium. When shear stress is exerted on a vessel, its inner lining naturally secretes vasodilators and anticoagulants such as nitric oxide and TcPO2. In effect, the vessel temporarily widens, allowing more inflow. This effect can only be achieved with rapid external compression and decompression (each less than 0.5 seconds). Over time, the daily application of shear stress will encourage the growth of existing collateral arteries, as seen below:

angiogram van bemmelen artassist arterial pump technology

Arteriogenesis (or collateralization/collateral artery growth) explains why patients have long-term results after stopping ArtAssist® device usage

The ArtAssist® device is the only external pneumatic compression pump designed to focus on collateral artery growth. It activates the endothelium with rapid compression and decompression rates in the foot, ankle, and calf regions. This addresses poor circulation and wounds present from heel to toe, as well as in the rest of the limb.

Acquiring an ArtAssist® device is simple and may be reimbursed by insurance in certain areas of the United States. Device technology experts can discuss medical benefits with both physicians and patients, and will also fulfill orders. Call or email ACI Medical to begin: toll free (888) 453-4356 or info@acimedical.com.