Introduction: Abdominal-pelvic hemorrhage (i.e., originates below the diaphragm and above the inguinal ligaments) is a major cause of death. It has diverse etiology but is typically associated with gunshot or stab wounds, high force or velocity blunt trauma, aortic rupture, and peripartum bleeds. Because there are few immediately deployable, temporizing measures, and the standard approaches such as direct pressure, hemostatics, and tourniquets are less reliable than they are with compressible extremity injuries, risk for death resulting from abdominal-pelvic hemorrhage is high. This review concerns the exciting potential of proximal external aortic compression (PEAC) as a temporizing technique for life-threatening lower abdominal-pelvic hemorrhage. PEAC can be accomplished by means of a device, two locked arms (manual), or a single knee (genicular) to press over the midline supra-umbilical abdomen. The goal is to compress the descending aorta and slow or halt downstream hemorrhage while not delaying more definitive measures such as hemostatic packing, tourniquets, endovascular balloons, and ultimately operative repair. Methods: Clinical review of the Ovid MEDLINE, In-Process, & Other Non-Indexed, and Google Scholar databases was performed for the period ranging from 1946 to 3 May 2019 for studies that included the following search terms: [proximal] external aortic compression OR vena cava compression AND (abdomen or pelvis) OR (hemorrhage) OR (emergency or trauma). In addition, references from included studies were assessed. Conclusion: Sixteen studies met the inclusion criteria. Evidence was grouped and summarized from the specialties of trauma, aortic surgery, and obstetrics to help prehospital responders and guide much-needed additional research, with the goal of decreasing the high risk for death after life-threatening abdominal-pelvic hemorrhage.

Keywords: hemorrhage; trauma; shock; junctional trauma; noncompressible hemorrhage; prehospital care; austere environment; proximal external aortic compression; PEAC

The JSOM podcast digs deeper into the articles and subjects that matter to our readers. Our podcast hosts, Captains Alex Merkle and Josh Randles, tackle articles from the journal based on merit, interest, and application for operators in the field. In addition, the podcast features a special, not to be missed Interview Series with leaders, doctors, and authors.

In the Summer 2020 episode of the JSOM Podcast, Alex and Josh discuss the article, "Step Duration Effects on Blood Loss in Simulated Designs of Tourniquet Use Procedure". Guest Will Price breaks down the article, "Clothing Effects on Limb Tourniquet Application", and authors Matt Douma and Peter Brindley discuss their article, "Temporizing Life-Threatening Abdominal-Pelvic Hemorrhage Using Proprietary Devices, Manual Pressure, or a Single Knee: An Integrative Review of Proximal External Aortic Compression and Even 'Knee BOA'.

Duration: 37:10

MAJ Andrew Fisher, MS-4, PA-C, LP for a great review of pre-hospital whole blood in the military; where we are now and how we got there. He reminds us that, "everything old is new again." The first whole blood transfusion research was done by the military in 1940 (Armed Forces Blood Program) and was used extensively in WWII and the Korean War. But times change and lessons learned are lost to the sands of time as one generation of peacetime military surgeons hands off the reigns to the next. Listen here.

World-renowned tourniquet expert Dr. John Kragh. In this interview, Dr. Kragh takes us through his history in becoming a tourniquet expert as well as detailing the evolution of tourniquet use in combat situations as a battalion surgeon in Southwest Asia. Tourniquet use has evolved considerably even during the 20-years since the JSOM has been in publication. Be sure to read Dr. Kragh's contributions to this quarter's journal as a companion to this interview. Listen here.

CMSgt Michael Rubio, currently the commandant of the 351st Special Warfare Training Squadron of the PJ schoolhouse at Kirkland AFB. It's a great opportunity to hear from the best about how PJ training has changed during the past 20 years, and get a glimpse of where it is heading in the future. You can listen here. Look for another episode later this month.

This practice management guide does not supersede DoD Policy. It is a guideline only and not a substitute for clinical judgment. It is based upon the best information available at the time of publication. It is designed to provide information and assist decision making. It is not intended to define a standard of care and should not be construed as one. Neither should it be interpreted as prescribing an exclusive course of management. It was developed by experts in this field. Variations in practice will inevitably and appropriately occur when clinicians take into account the needs of individual patients, available resources, and limitations unique to an institution or type of practice. Every healthcare professional making use of this guideline is responsible for evaluating the appropriateness of applying it in the setting of any particular clinical situation. The practice management guide is not intended to represent TRICARE policy. Further, inclusion of recommendations for specific testing and/or therapeutic interventions within this guide does not guarantee coverage of civilian sector care. Additional information on current TRICARE benefits may be found at www.tricare.mil or by contacting your regional TRICARE Managed Care Support Contractor. 

Register today for the World Trauma Symposium, bringing cutting-edge trauma education from internationally renowned experts who will discuss Trauma Care in a Changing World. 

The World Trauma Symposium will be held virtually in conjunction with EMS World Expo, September 14 and 15. Choose one full program or two half-day beginning at just a $50 registration fee. Attendees can receive up to 8 hours of ACCME or CAPCE-approved credits

The JSOM is incredibly grateful to have the support of many institutions around the world. We would like to thank our recent institutional subscribers and re-subscribers for their support by acknowledging them in our eNewsletter and, when applicable, sharing their social media information. We reached a milestone, surpassing 50 institutions! We currently have 55 active institutional subscriptions, reaching a potential 59,000+ readers!

In this edition, we welcome back 1 returning institution

Korps Commando Troepen - Roosendaal, The Netherlands

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If your institution is not on the list and you would like more information about our institutional access, contact our subscriptions manager, Dr. Scott Graverson.

Air Force Special Tactics operators conduct a static line jump out of a C-130H Hercules, assigned to the 908th Airlift Wing from Maxwell Air Force Base, Georgia, following a Rigged Alternate Method Boat package into the water during training at Eglin Range, Florida. The training was conducted to ensure operators are familiar with static line jump procedures and working with a RAMB package for water rescues. (U.S. Air Force photo by Tech. Sgt. Rose Gudex)

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