There's an app for that: A handheld smartphone-based infrared imaging device to assess adequacy and level of aortic occlusion during REBOA.

BACKGROUND: Advances in thermal imaging devices have made them an appealing non-invasive point-of-care imaging adjunct in the trauma setting. We sought to assess whether a smartphone-based infrared imaging device (SBIR) could determine presence and location of aortic occlusion in a swine model. We hypothesized that various levels of aortic occlusion would transmit significantly different heat signatures a various anatomical points. METHODS: Six swine (35-50kg) underwent sequential zone I (Z1) aortic cross clamping as well as zone III (Z3) aortic balloon occlusion (REBOA). SBIR images and readings (FLIR OneTM) were taken at 5 anatomic points (axilla [A], subcostal [S], umbilical [U], inguinal [I], medial malleolar [M]) and were used to determine significant thermal trends 5-10 min after Z1 and Z3 occlusion. Significant (p

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