Ultrasound of the Aorta.

This article reviews the use of point-of-care ultrasound (POCUS) for evaluating the aorta from anatomy and image acquisition to the diagnosis of aortic pathology, including aneurysms and dissection. Ruptured aortic aneurysm and aortic dissection are associated with high mortality and often experience a delay in time to diagnosis. Traditionally diagnosis was made through computed tomography which takes time and removes the patient from the emergency department. Incorporating POCUS into the evaluation of patients with suspected aortic pathology allows for rapid, accurate diagnosis and earlier definitive treatment.

Point of Care Ultrasounds Obtained by Novice Physician Assistant Residents (POCUS ON PAR).

INTRODUCTION: The integration of Point of Care Ultrasound (POCUS) into the care of trauma patients, specifically the E-FAST, has improved the accuracy of initial diagnoses and improved time to surgical intervention in critically ill patients. Physician assistants (PAs) are critically important members of any military trauma resuscitation team and are often team leaders in a pre-hospital setting. They may receive training in ultrasound but there are little data to support their use or evaluate their effectiveness in using POCUS. We designed a study to evaluate the image quality of an E-FAST Exam performed by Emergency Medicine Physician Assistant (EMPA) Fellows and Emergency Medicine (EM) Interns following identical training. Our hypothesis is that image quality obtained by EMPAs will be non-inferior to those images obtained by EM Interns. MATERIALS AND METHODS: This is a prospective single-blinded study comparing the image quality of E-FAST exams performed by first year EM interns and first year EMPA fellows. All participants completed standard POCUS training prior to enrollment in the study. A total of 8 EMPAs and 8 EM first year residents completed 10 recorded E-FAST exams to be used as study images. Participants also viewed a 15-question slide show containing images of positive (6) and negative (9) E-FAST exams and recorded their interpretations. Images were reviewed by expert reviewers who were blinded to which images were collected by which group. An image quality score was recorded for each view as well as an overall image quality score. Image quality was rated on a 1 to 5 image quality scale. RESULTS: For overall image quality, the mean score for EMPAs was 3.6 ± 0.5 and for EM residents was 3.2 ± 0.5 with statistical significance favoring better image quality from the EMPAs. The time to completion for the EFAST exam for EMPAs was 4.8 ± 1.3 minutes and for interns it was 3.4 ± 1.4 minutes (P value = 0.02). There was no difference in image interpretation quiz scores between the groups (mean score 92% among interns and 95% among PAs). CONCLUSIONS: POCUS is an imaging modality which is very portable and relatively inexpensive which makes it ideal for military medicine. PAs are essential members of military trauma teams, and often run an initial trauma resuscitation. Being able to correctly identify patients who have free fluid early in the course of treatment allows for more correct evacuation criteria to ensure the sickest patients get to care the fastest. Although there are limited data to support POCUS use by non-physicians, our data support a growing body of evidence that it is not the profession or baseline medical education that determines an individual's ability to use and incorporate ultrasound into bedside and clinical practice. Our study shows that with training and experience PAs or other members of the military health care team can use the EFAST to better care for trauma patients.

Military Medical Evacuation After the Benghazi Embassy Attack: Implications for Military Support of Diplomatic Missions.

BACKGROUND: The Department of State has the primary responsibility of diplomatic operations in foreign countries. The US military often supports these missions and, when needed, may be called upon to provide security in the event of changes in the host nation's government stability. The US military was requested to help evacuate the consulate in Benghazi after the attack on September 11, 2012. The medical requirements to support such a mission remain unclear, and data are lacking. We sought to describe the medical care required during this evacuation mission. METHODS: This is a secondary analysis of a previously described dataset from the United States Transportation Command (TRANSCOM) Regulating Command & Control and Evacuation System (TRAC2ES) from 2008 to 2018, with a focus on cases involving the evacuation after the Libyan consulate attack in September 2012. Within our dataset, we isolated all cases of evacuation from the attack on US government facilities in Benghazi. We describe the available data within TRAC2ES, including the free text information placed by the initiating medical personnel. RESULTS: We identified three cases of evacuations within TRAC2ES associated with the Benghazi consulate attack. All cases were evacuated from host nation hospitals to Landstuhl Regional Medical Center (LRMC) by military aircraft under urgent status. Case 1 was an adult male injured by an undocumented mechanism. He was found to be in severe shock, received four units of blood prior to transport, and was intubated. Case 2 was an adult male injured by an undocumented mechanism. He had documented smoke inhalation injury and was found to be coughing up black sputum. Case 3 was an adult male injured by an undocumented mechanism. He had a compound radial fracture with an external fixator in place and subsequently developed compartment syndrome. He was intubated prior to transport. CONCLUSIONS: Our case series focuses on the unique aspects of military support of diplomatic missions in countries lacking a stable government-specifically, what transpired in Benghazi. Such events showcase areas of potential collaboration between the Department of State and the Department of Defense in coordinating medical evacuations for casualties sustained during diplomatic missions.