Accession Number : AD1035356


Title :   The Effect of Infrarenal Aortic Balloon Occlusion on Weaning from Supraceliac Aortic Balloon Occlusion in a Porcine Model (Sus scrofa) of Hemorrhagic Shock


Descriptive Note : Technical Report,25 Aug 2016,15 Jun 2017


Corporate Author : DAVID GRANT USAF MEDICAL CENTER TRAVIS AFB CA TRAVIS AFB


Personal Author(s) : Tibbits,Emily


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/1035356.pdf


Report Date : 15 Jun 2017


Pagination or Media Count : 4


Abstract : Objectives: We sought to determine whether stepwise reperfusion after supraceliac (Zone-1) REBOA by transitioning to infrarenal (Zone-3) occlusion would mitigate the physiologic consequences of balloon deflation and decrease hemodynamic instability.Methods: Twelve swine underwent controlled hemorrhage of 25 blood volume, 45 minutes of Zone-1 REBOA, then resuscitation with shed blood. Critical care began with deflation of the Zone-1 balloon in all animals, and continued for six hours. Half of the animals were randomly assigned to Zone-3 REBOA for an additional 45 minutes following Zone-1 balloon deflation.Results: There were no differences in physiology at baseline, during the initial 30 minutes of hypotension, or during the 45 minutes of Zone-1 occlusion. After Zone-1 balloon deflation, there was no difference in proximal mean arterial pressure (pMAP) with or without Zone-3 occlusion, or percentage of critical care time spent within target pMAP range (65-75 mmHg). There were no significant differences in peak lactate concentration or resuscitation requirements.Conclusion: In an animal model of hemorrhagic shock and Zone-1 REBOA, subsequent Zone-3 aortic occlusion did not add significant ischemic burden, but it also did not provide significant hemodynamic support. Continued investigation is necessary to determine optimal resuscitative support strategies during reperfusion following Zone-1 REBOA.


Distribution Statement : APPROVED FOR PUBLIC RELEASE