Name: complete and partial aortic occlusion for the treatment of hemorrhagic shock in swine
Uploaded: 2018-08-24T14:45:00
Description: Watch this Scientific Journal Video about Complete and Partial Aortic Occlusion for the Treatment of Hemorrhagic Shock in Swine at JoVE.com

We would like to acknowledge Rachel O&#39;Connell,&#160;and Jessica Lee for their assistance with the animal studies. We would also like to acknowledge Maj. General Harold Timboe, MD, MPH, U.S. Army (Ret.), who has been an advisor and mentor for this project.

In conducting research using animals, the investigators adhered to the Animal Welfare Act Regulations and other Federal statutes relating to animals and experiments involving animals and the principles set forth in the current version of the Guide for Care and Use of Laboratory Animals of the National Research Council. This study protocol was approved by the University of Michigan Institutional Animal Care and Use Committee (IACUC). The experiments were conducted in compliance with all regulations and guidelines regardin...

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E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+role+of+REBOA+in+the+control+of+exsanguinating+torso+hemorrhage.">The role of REBOA in the control of exsanguinating torso hemorrhage.</a> Journal of Trauma and Acute Care Surgery. 78 (5), 1054-1058 (2015).</li><li>Manzano Nunez, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+meta-analysis+of+resuscitative+endovascular+balloon+occlusion+of+the+aorta+(REBOA)+or+open+aortic+cross-clamping+by+resuscitative+thoracotomy+in+non-compressible+torso+hemorrhage+patients.">A meta-analysis of resuscitative endovascular balloon occlusion of the aorta (REBOA) or open aortic cross-clamping by resuscitative thoracotomy in non-compressible torso hemorrhage patients.</a> World Journal of Emergency Surgery. 12, 30 (2017).</li><li>Gupta, B. K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+role+of+intra-aortic+balloon+occlusion+in+penetrating+abdominal+trauma.">The role of intra-aortic balloon occlusion in penetrating abdominal trauma.</a> Journal of Trauma. 29 (6), 861-865 (1989).</li><li>Inoue, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Resuscitative+endovascular+balloon+occlusion+of+the+aorta+might+be+dangerous+in+patients+with+severe+torso+trauma:+A+propensity+score+analysis.">Resuscitative endovascular balloon occlusion of the aorta might be dangerous in patients with severe torso trauma: A propensity score analysis.</a> Journal of Trauma and Acute Care Surgery. 80 (4), 559-566 (2016).</li><li>Russo, R. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extending+the+golden+hour:+Partial+resuscitative+endovascular+balloon+occlusion+of+the+aorta+in+a+highly+lethal+swine+liver+injury+model.">Extending the golden hour: Partial resuscitative endovascular balloon occlusion of the aorta in a highly lethal swine liver injury model.</a> Journal of Trauma and Acute Care Surgery. 80 (3), 378-380 (2016).</li><li>Russo, R. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Partial+Resuscitative+Endovascular+Balloon+Occlusion+of+the+Aorta+in+Swine+Model+of+Hemorrhagic+Shock.">Partial Resuscitative Endovascular Balloon Occlusion of the Aorta in Swine Model of Hemorrhagic Shock.</a> Journal of the American College of Surgeons. 223 (2), 359-368 (2016).</li><li>Williams, T. K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extending+resuscitative+endovascular+balloon+occlusion+of+the+aorta:+Endovascular+variable+aortic+control+in+a+lethal+model+of+hemorrhagic+shock.">Extending resuscitative endovascular balloon occlusion of the aorta: Endovascular variable aortic control in a lethal model of hemorrhagic shock.</a> The Journal of Trauma and Acute Care Surgery. 81 (2), 294-301 (2016).</li><li>Hannon, J. P., Swindle, M. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hemorrhage+and+hemorrhagic-shock+in+swine:+A+review.">Hemorrhage and hemorrhagic-shock in swine: A review.</a> Swine as Models in Biomedical Research. , 197-245 (1992).</li><li>Garry, B. P., Bivens, H. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Seldinger+technique.">The Seldinger technique.</a> Journal of Cardiothorac Anesthesia. 2 (3), 403 (1988).</li><li>Halaweish, I., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Addition+of+low-dose+valproic+acid+to+saline+resuscitation+provides+neuroprotection+and+improves+long-term+outcomes+in+a+large+animal+model+of+combined+traumatic+brain+injury+and+hemorrhagic+shock.">Addition of low-dose valproic acid to saline resuscitation provides neuroprotection and improves long-term outcomes in a large animal model of combined traumatic brain injury and hemorrhagic shock.</a> The Journal of Trauma and Acute Care Surgery. 79 (6), 911-919 (2015).</li><li>Alam, H. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surviving+blood+loss+without+blood+transfusion+in+a+swine+poly-trauma+model.">Surviving blood loss without blood transfusion in a swine poly-trauma model.</a> Surgery. 146 (2), 325-333 (2009).</li><li>Jin, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Traumatic+brain+injury+and+hemorrhagic+shock:+evaluation+of+different+resuscitation+strategies+in+a+large+animal+model+of+combined+insults.">Traumatic brain injury and hemorrhagic shock: evaluation of different resuscitation strategies in a large animal model of combined insults.</a> Shock. 38 (1), 49-56 (2012).</li><li>Nikolian, V. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Valproic+acid+decreases+brain+lesion+size+and+improves+neurologic+recovery+in+swine+subjected+to+traumatic+brain+injury,+hemorrhagic+shock,+and+polytrauma.">Valproic acid decreases brain lesion size and improves neurologic recovery in swine subjected to traumatic brain injury, hemorrhagic shock, and polytrauma.</a> The Journal of Trauma and Acute Care Surgery. 83 (6), 1066-1073 (2017).</li><li>Langeland, H., Lyng, O., Aadahl, P., Skjaervold, N. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+coherence+of+macrocirculation,+microcirculation,+and+tissue+metabolic+response+during+nontraumatic+hemorrhagic+shock+in+swine.">The coherence of macrocirculation, microcirculation, and tissue metabolic response during nontraumatic hemorrhagic shock in swine.</a> Physiological Reports. 5 (7), (2017).</li><li>Johnson, M. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+effect+of+resuscitative+endovascular+balloon+occlusion+of+the+aorta,+partial+aortic+occlusion+and+aggressive+blood+transfusion+on+traumatic+brain+injury+in+a+swine+multiple+injuries+model.">The effect of resuscitative endovascular balloon occlusion of the aorta, partial aortic occlusion and aggressive blood transfusion on traumatic brain injury in a swine multiple injuries model.</a> Journal of Trauma Acute Care Surgery. 83 (1), 61-70 (2017).</li><li>Theisen, M. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ventral+recumbency+is+crucial+for+fast+and+safe+orotracheal+intubation+in+laboratory+swine.">Ventral recumbency is crucial for fast and safe orotracheal intubation in laboratory swine.</a> Laboratory Animals. 43 (1), 96-101 (2009).</li><li>Li, Y., Alam, H. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Modulation+of+acetylation:+creating+a+pro-survival+and+anti-inflammatory+phenotype+in+lethal+hemorrhagic+and+septic+shock.">Modulation of acetylation: creating a pro-survival and anti-inflammatory phenotype in lethal hemorrhagic and septic shock.</a> Journal of Biomedicine and Biotechnology. 2011, 523481 (2011).</li><li>Nikolian, V. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Valproic+acid+decreases+brain+lesion+size+and+improves+neurologic+recovery+in+swine+subjected+to+traumatic+brain+injury,+hemorrhagic+shock,+and+polytrauma.">Valproic acid decreases brain lesion size and improves neurologic recovery in swine subjected to traumatic brain injury, hemorrhagic shock, and polytrauma.</a> The Journal of Trauma and Acute Care Surgery. 83 (6), 1066-1073 (2017).</li><li>Dekker, S. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Normal+saline+influences+coagulation+and+endothelial+function+after+traumatic+brain+injury+and+hemorrhagic+shock+in+pigs.">Normal saline influences coagulation and endothelial function after traumatic brain injury and hemorrhagic shock in pigs.</a> Surgery. 156 (3), 556-563 (2014).</li><li>Causey, M. W., McVay, D. P., Miller, S., Beekley, A., Martin, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+efficacy+of+Combat+Gauze+in+extreme+physiologic+conditions.">The efficacy of Combat Gauze in extreme physiologic conditions.</a> The Journal of Surgical Research. 177 (2), 301-305 (2012).</li><li>Frankel, D. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Physiologic+response+to+hemorrhagic+shock+depends+on+rate+and+means+of+hemorrhage.">Physiologic response to hemorrhagic shock depends on rate and means of hemorrhage.</a> The Journal of Surgical Research. 143 (2), 276-280 (2007).</li><li>Morrison, J. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+inflammatory+sequelae+of+aortic+balloon+occlusion+in+hemorrhagic+shock.">The inflammatory sequelae of aortic balloon occlusion in hemorrhagic shock.</a> The Journal of Surgical Research. 191 (2), 423-431 (2014).</li><li>White, J. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+porcine+model+for+evaluating+the+management+of+noncompressible+torso+hemorrhage.">A porcine model for evaluating the management of noncompressible torso hemorrhage.</a> Journal of Trauma. 71, S131-S138 (2011).</li><li>Alam, H. B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Putting+life+on+hold-for+how+long?+Profound+hypothermic+cardiopulmonary+bypass+in+a+Swine+model+of+complex+vascular+injuries.">Putting life on hold-for how long? Profound hypothermic cardiopulmonary bypass in a Swine model of complex vascular injuries.</a> Journal of Trauma. 64 (4), 912-922 (2008).</li><li>Bebarta, V. S., Daheshia, M., Ross, J. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+significance+of+splenectomy+in+experimental+swine+models+of+controlled+hemorrhagic+shock.">The significance of splenectomy in experimental swine models of controlled hemorrhagic shock.</a> The Journal of Trauma and Acute Care Surgery. 75 (5), 920 (2013).</li><li>Georgoff, P. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Alterations+in+the+human+proteome+following+administration+of+valproic+acid.">Alterations in the human proteome following administration of valproic acid.</a> Journal of Trauma and Acute Care Surgery. 81 (6), 1020-1027 (2016).</li><li>Dekker, S. 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In this protocol, we highlighted a hemorrhagic shock model in swine. This model has been shown to be both reliable and reproducible16,17,18,19. Models similar to this have been employed in several scientific studies investigating the effects of hemorrhagic shock on animal physiology16,20. Furthermore, this model has also been used for t...

Hemorrhage continues to be the dominant cause of preventable deaths in patients undergoing traumatic events, accounting for 90% of trauma-related deaths in the military setting and 40% of post-traumatic deaths in the civilian population1,2. Although direct pressure can treat compressible hemorrhage, non-compressible torso hemorrhage remains difficult to treat and can be lethal without prompt hemostatic control. The historical approach of resuscitative thoracotomy or laparotomy with aortic cross-clamping has proved to be extremely invasive3,4. This intervention also requires a complex selection algorithm to determine the candidacy of patients that have undergone traumatic insults5.
In recent years, there has been a resurgence of interest in a previously described approach&#8212;resuscitative endovascular balloon occlusion of the aorta (REBOA)6,7,8. Although REBOA has conferred a short-term survival advantages in hemorrhage, a prolonged complete occlusion of the aorta during balloon inflation poses serious concerns that include irreversible end-organ ischemia9,10. In an attempt to overcome this potential morbidity, alternative endovascular strategies to manage hemorrhage are being devised. One such strategy that has seen a growing attention is a partial occlusion of the aorta11,12. The idea of partial aortic balloon occlusion affords the perfusion of vascular beds distal to the site of occlusion, improved physiologic proximal aortic MAPs, and a gradual afterload reduction following the balloon deflation. These changes in parameters are desired modifications to the physiological characteristics of a bleeding animal. Prior to this method&#39;s translation to humans, complete and partial aortic balloon occlusion catheters have been heavily tested in swine models of hemorrhagic shock11,12,13.
Swine have been used in studies entailing hemorrhagic shock for many years. Most of the current understanding of the pathophysiology of hemorrhagic shock is derived from studies that have utilized animal models, including swine. Their physiology and homeostatic responses in the setting of pathologic volume depletion following hemorrhage, especially those pertaining to blood clotting and cardiovascular responses, have been well-documented and are like those in humans14. Swine models of hemorrhagic shock also provide opportunities to investigate treatment strategies for hemorrhagic shock and other traumatic injuries.
In this study, we demonstrate a clinically realistic model of hemorrhagic shock in swine to evaluate endovascular treatment strategies, including complete and partial aortic balloon occlusion. We hypothesize that a partial occlusion of the aorta results in a better physiologic and laboratory profile compared to a complete occlusion of the aorta in swine undergoing a controlled fixed-volume hemorrhage.
We aimed to compare the physiologic effects of partial and complete aortic occlusion as a treatment for hemorrhagic shock in a swine model. Partial aortic occlusion was achieved using a selective aortic balloon occlusion in trauma (SABOT) catheter (Figure 1). The SABOT catheter is a two-balloon system that allows intra-luminal blood flow, thereby providing a partial aortic flow to the vascular beds distal to the occlusion. Complete aortic occlusion was achieved using a single-balloon aortic occlusion catheter (e.g.,CODA) (Figure 1). Treatment groups were randomized to undergo resuscitative aortic occlusion either with the complete or with the partial aortic balloon occlusion catheters (n = 2/group).
The major steps of the model include the induction of anesthesia and intubation, the maintenance of anesthesia, instrumentation, 35% TBV hemorrhage (20 min total; half over the first 7 min, and half over the remaining 13 min), aortic balloon occlusion and whole-blood resuscitation (60 min of occlusion; 20% whole-blood resuscitation during the last 20 min of the occlusion), critical care monitoring (240 min) with hemodynamic observation, and euthanasia with tissue harvesting. Figure 2 demonstrates the model utilized in this experiment.

<table>
	<tbody>
		<tr>
			<td>Yorkshire-Landrace Swine</td>
			<td>Michigan State University Veterinary Farm</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Anesthesia: Telazol</td>
			<td>Pfizer</td>
			<td></td>
			<td>Dose: 2-8 mg/kg; IM</td>
		</tr>
		<tr>
			<td>Anti-cholinergic: Atropine</td>
			<td>Pfizer</td>
			<td></td>
			<td>Dose: 1mg, IM</td>
		</tr>
		<tr>
			<td>Anesthesia: Isoflurane</td>
			<td>Baxter</td>
			<td></td>
			<td>Dose: 1-5%, INH</td>
		</tr>
		<tr>
			<td>Betadine</td>
			<td>Humco</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Alcohol 70%</td>
			<td>Humco</td>
			<td>NDC 0395-4202-28</td>
			<td></td>
		</tr>
		<tr>
			<td>Datex-Aespire Anesthesia Machine</td>
			<td>GE Healthcare</td>
			<td>7900</td>
			<td></td>
		</tr>
		<tr>
			<td>Endotracheal tube</td>
			<td>DEE Veterinary</td>
			<td>20170518</td>
			<td>Appropriate size for animal (6.5 or 7.0F)</td>
		</tr>
		<tr>
			<td>Laryngoscope</td>
			<td>Miller</td>
			<td>85-0045</td>
			<td></td>
		</tr>
		<tr>
			<td>Stylet</td>
			<td>Hudson RCI</td>
			<td>5-151--1</td>
			<td></td>
		</tr>
		<tr>
			<td>Jelco 20G IV Catheter</td>
			<td>Smiths Medical</td>
			<td>4054</td>
			<td></td>
		</tr>
		<tr>
			<td>Operating Room Monitor (Vital Signs Monitor)</td>
			<td>SurgiVet Advisor</td>
			<td>V9201</td>
			<td>May require at least 2</td>
		</tr>
		<tr>
			<td>Surgical Gowns</td>
			<td>Kimberly Clark</td>
			<td>90142</td>
			<td>Use appropriate size for surgeon.</td>
		</tr>
		<tr>
			<td>Sterile surgical gloves</td>
			<td>Cardinal Health (Allegiance)</td>
			<td>22537-570</td>
			<td>Use appropriate size for surgeon.</td>
		</tr>
		<tr>
			<td>Cautery Pencil</td>
			<td>Medline</td>
			<td>ESPB 2000</td>
			<td></td>
		</tr>
		<tr>
			<td>Suction tubing</td>
			<td>Medline</td>
			<td>DYND50251</td>
			<td></td>
		</tr>
		<tr>
			<td>Sunction tip: Yankauer</td>
			<td>Medline</td>
			<td>DYND50130</td>
			<td></td>
		</tr>
		<tr>
			<td>Bovie Aaron 1250 Electrocautery Unit</td>
			<td>Bovie Medical Co. FL</td>
			<td>BOV-A1250U</td>
			<td></td>
		</tr>
		<tr>
			<td>Salpel Blade - Size #10</td>
			<td>Cardinal Health (Allegiance)</td>
			<td>32295-010</td>
			<td></td>
		</tr>
		<tr>
			<td>Scalpel Handle</td>
			<td>Martin</td>
			<td>10-295-11</td>
			<td></td>
		</tr>
		<tr>
			<td>Debakey Forceps</td>
			<td>Roboz</td>
			<td>RS-7562</td>
			<td></td>
		</tr>
		<tr>
			<td>Weitlander Retractor</td>
			<td>Roboz</td>
			<td>RS-8612</td>
			<td></td>
		</tr>
		<tr>
			<td>Mayo Scissors</td>
			<td>Roboz</td>
			<td>RS-76870SC</td>
			<td></td>
		</tr>
		<tr>
			<td>Army-navy Retractor</td>
			<td>Teleflex</td>
			<td>164715</td>
			<td></td>
		</tr>
		<tr>
			<td>Mixter Right-angle Forceps</td>
			<td>Teleflex</td>
			<td>175073</td>
			<td></td>
		</tr>
		<tr>
			<td>5F (1.7 mm) 11 cm Insertion Sheath with 0.35&#34; Guidewire</td>
			<td>Boston Scientific</td>
			<td>16035-05B</td>
			<td></td>
		</tr>
		<tr>
			<td>8F (2.7 mm) 11 cm Insertion Sheath with 0.35&#39;&#39; Guidewire</td>
			<td>Boston Scientific</td>
			<td>16035-08B</td>
			<td></td>
		</tr>
		<tr>
			<td>20G angled Introducer Needle</td>
			<td>Arrow</td>
			<td>AK-09903-S</td>
			<td></td>
		</tr>
		<tr>
			<td>14F (4.78 mm) 13 cm Insertion Sheath with 10F dilator</td>
			<td>Cook Medical</td>
			<td>G08024</td>
			<td></td>
		</tr>
		<tr>
			<td>2-0 Silk 18&#39;&#39; 45 cm</td>
			<td>Ethicon</td>
			<td>A185H</td>
			<td></td>
		</tr>
		<tr>
			<td>3-0 Vicryl 36&#39;&#39; 90 cm</td>
			<td>Ethicon</td>
			<td>J344H</td>
			<td></td>
		</tr>
		<tr>
			<td>3-0 Nylon 18&#39;&#39; 45 cm</td>
			<td>Ethicon</td>
			<td>663G</td>
			<td></td>
		</tr>
		<tr>
			<td>4-0 Prolene 30&#39;&#39; 75 cm</td>
			<td>Ethicon</td>
			<td>8831H</td>
			<td></td>
		</tr>
		<tr>
			<td>20 ml syringe</td>
			<td>Metronic/Covidien</td>
			<td>8881512878</td>
			<td></td>
		</tr>
		<tr>
			<td>3 mL syringe</td>
			<td>Metronic/Covidien</td>
			<td>1180300555</td>
			<td></td>
		</tr>
		<tr>
			<td>6 mL syringe</td>
			<td>Metronic/Covidien</td>
			<td>1180600777</td>
			<td></td>
		</tr>
		<tr>
			<td>1000ml 0.9% Saline</td>
			<td>Baxter</td>
			<td>2B1324X</td>
			<td></td>
		</tr>
		<tr>
			<td>Foley Catheter (18F 30 cc)</td>
			<td>Bard</td>
			<td>0166V18S</td>
			<td></td>
		</tr>
		<tr>
			<td>Urinary Drainage Bag</td>
			<td>Bard</td>
			<td>154002</td>
			<td></td>
		</tr>
		<tr>
			<td>9F 10 cm Insertion Sheath</td>
			<td>Arrow</td>
			<td>AK-09903-S</td>
			<td></td>
		</tr>
		<tr>
			<td>Swan-Ganz pulmonary artery catheter (8F)</td>
			<td>Edwards Lifesciences co. CA</td>
			<td>746F8</td>
			<td></td>
		</tr>
		<tr>
			<td>Carotid Flow Probe System</td>
			<td>Transonic, Ithaca, NY</td>
			<td></td>
			<td>3, 4, or 6 mm probes</td>
		</tr>
		<tr>
			<td>SABOT catheter</td>
			<td>Hayes Inc.</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>CODA balloon catheter</td>
			<td>Cook Medical</td>
			<td>8379144</td>
			<td></td>
		</tr>
		<tr>
			<td>Ultrasound, M-Turbo</td>
			<td>SonoSite</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Amplatz Stiff Guidewire (0.035 inch, 260 cm)</td>
			<td>Cook Medical</td>
			<td>G03460</td>
			<td></td>
		</tr>
		<tr>
			<td>Arterial Blood Gas Syringes</td>
			<td>Smiths Medical</td>
			<td>4041-2</td>
			<td></td>
		</tr>
		<tr>
			<td>Arterial Blood Gas Analyzer</td>
			<td>Nova Biochemical</td>
			<td>ABL800</td>
			<td></td>
		</tr>
		<tr>
			<td>Masterflex Pump</td>
			<td>Cole Palmer</td>
			<td>HV-77921-75</td>
			<td></td>
		</tr>
		<tr>
			<td>Blood Collection Bags</td>
			<td>Terumo</td>
			<td>1BBD606A</td>
			<td></td>
		</tr>
		<tr>
			<td>Macro IV drip set</td>
			<td>Hospira</td>
			<td>12672-28</td>
			<td></td>
		</tr>
		<tr>
			<td>Pentobarbital</td>
			<td>Pfizer</td>
			<td></td>
			<td>Dose: 100 mg/kg; IV</td>
		</tr>
		<tr>
			<td>Eppendorf Tubes</td>
			<td>Sorenson</td>
			<td>11590</td>
			<td></td>
		</tr>
		<tr>
			<td>50 cc conical tubes</td>
			<td>Falcon</td>
			<td>352097</td>
			<td></td>
		</tr>
		<tr>
			<td>Formalin</td>
			<td>Fisherbrand</td>
			<td>431121</td>
			<td></td>
		</tr>
		<tr>
			<td>Bair Hugger Normothermia System</td>
			<td>Arizant Healthcare, Inc.</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

complete and partial aortic occlusion for the treatment of hemorrhagic shock in swine

Hemorrhage remains the leading cause of preventable deaths in trauma. Endovascular management of non-compressible torso hemorrhage has been at the forefront of trauma care in recent years. Since complete aortic occlusion presents serious concerns, the concept of partial aortic occlusion has gained a growing attention. Here, we present a large animal model of hemorrhagic shock to investigate the effects of a novel partial aortic balloon occlusion catheter and compare it with a catheter that works on the principles of complete aortic occlusion. Swine are anesthetized and instrumented in order to conduct controlled fixed-volume hemorrhage, and hemodynamic and physiological parameters are monitored. Following hemorrhage, aortic balloon occlusion catheters are inserted and inflated in the supraceliac aorta for 60 min, during which the animals receive whole-blood resuscitation as 20% of the total blood volume (TBV). Following balloon deflation, the animals are monitored in a critical care setting for 4 h, during which they receive fluid resuscitation and vasopressors as needed. The partial aortic balloon occlusion demonstrated improved distal mean arterial pressures (MAPs) during the balloon inflation, decreased markers of ischemia, and decreased fluid resuscitation and vasopressor use. As swine physiology and homeostatic responses following hemorrhage have been well-documented and are like those in humans, a swine hemorrhagic shock model can be used to test various treatment strategies. In addition to treating hemorrhage, aortic balloon occlusion catheters have become popular for their role in cardiac arrest, cardiac and vascular surgery, and other high-risk elective surgical procedures.

Hemodynamic and Physiological Parameters:
The MAP decreased immediately after the hemorrhage (Figures 3A - 3D). During the balloon inflation phase, animals in the complete occlusion group experienced a higher proximal MAP compared to the animals in the partial occlusion group (Figures 3A and 3B). The average distal MAP during the balloon inflation was higher in the...

Watch this Scientific Journal Video about Complete and Partial Aortic Occlusion for the Treatment of Hemorrhagic Shock in Swine at JoVE.com

Complete and Partial Aortic Occlusion for the Treatment of Hemorrhagic Shock in Swine

Here, we present a protocol demonstrating a hemorrhagic shock model in swine that uses aortic occlusion as a bridge to definitive care in trauma. This model has application in testing a wide range of surgical and pharmacological therapeutic strategies.

Hemorrhage remains the leading cause of preventable deaths in trauma. Endovascular management of non-compressible torso hemorrhage has been at the ...

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Medicine

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