NOrmoBaric Oxygen Therapy Use In Critical Limb ISchemia

Peripheral arteriopathy disease (PAD) affects 1 million people in France. In its most advanced stage: chronic permanent ischemia also called critical ischemia, the prognosis of patients is burdened with a one-year mortality rate of 30%. Chronic permanent ischemia results from a lack of oxygen supply to the microcirculatory network, responsible for tissue death and the development of trophic disorders. In this context, many studies have focused on the contribution of hyperbaric oxygen therapy, however none demonstrates with certainty its beneficial effect with a heavy set-up for teams and patients. Furthermore, it appears that normobaric oxygen therapy could have its place in this context by temporarily restoring a sufficient level of transcutaneous oxygen. However, even if normobaric oxygen therapy is common practice although empirical for some practitioners, no data demonstrates its real interest. The purpose of this study is therefore to report the proportion, in usual practice, of patients with permanent chronic ischemia of the lower limb(s), benefiting from normobaric oxygen therapy, but also to show the interest of the contribution of this therapy in usual comprehensive management of these patients. This is a pilot study, after which, if the hypothesis is confirmed, it may be proposed to carry out a randomized study, on a large scale, in order to validate the use of normobaric oxygen therapy in the context of chronic permanent ischemia.