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          use is different than that of in-hospital providers. In traditional   single battalion during a deployment in 2009.  In this study,
          hospital settings, ultrasound often assists in difficult diagnostic   29 out of 40 Special Forces medics (18Ds) received ultrasound
          pathways. For example, undifferentiated shock may be diffi-  training, with a modal number of 8 hours. The specific details
          cult to appropriately categorize  as distributive, cardiogenic,   of the training were not given; however, the authors noted that
          obstructive, or hypovolemic. However, in the combat theater,   trauma diagnostic ultrasonography exams and E-FAST exams
          the etiology of shock is rarely a mystery. Furthermore, the im-  comprised most of the training. As a part of the 18Ds’ ongoing
          plications of ultrasound findings in the hospital setting often   training, they conducted ultrasound exams during the deploy-
          drastically change management, such as the extended focused   ment to be reviewed later. Upon review, the authors found that
          assessment with sonography in trauma (E-FAST), determin-  out of the 109 exams performed 39 were classified as muscu-
          ing the need for surgical intervention. However, in the tactical   loskeletal (MSK), 34 as abdomen/trauma (E-FAST, covering
          environment, advanced interventions, such as surgery, are not   lung, cardiac, and abdominal exams), 22 as superficial, 8 as
          immediately available, and the decision to not facilitate evac-  special applications, 3 as procedural, and 3 as miscellaneous,
          uation based on a negative ultrasound examination would be   defined as not interpretable/unknown. Of note, superficial was
          ill-advised. Given these differences between in-hospital and   defined as abscess evaluation of a foreign body, and special
          Special Operations medicine, it is worth evaluating the role of   applications was defined as advanced application relevant to
          PoCUS specifically in SOCM practice.               SOF practice, including fetal viability, ocular foreign bodies,
                                                             retinal detachment, nephrolithiasis, and vascular studies.
          Methods
                                                             The second general article was a literature review that cov-
          To assess the current use of ultrasound in SOCM practice and   ered articles describing PoCUS use by military clinicians, with
          explore potential future applications, the author first con-  sensitivity and specificity reported. In this review by Savell et
          ducted a broad literature search specific to SOCMs. The au-  al.,  14 studies were included with 4 that included SOCMs.
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          thor initially searched the PubMed database in September 2023   The authors concluded that the evidence describing military
          for any articles describing SOCM use of ultrasound in clinical   use of PoCUS is limited. They also concluded that the limited
          practice. Upon completing this search, the author found no   evidence available supports the theory that military clinicians
          descriptions of SOCM-specific clinical ultrasound usage out-  can perform various PoCUS examinations with adequate sen-
          side of the Journal of Special Operations Medicine. Addition-  sitivity and specificity, particularly FAST exams and fracture
          ally, only a single article outside of this journal was identified,   detection.
          which described a potential future application of ultrasound
          for SOCMs, specifically the ability of SOCM trainees to suc-  Neurologic Articles
          cessfully perform optic nerve sheath examinations on healthy   In this review, a single article addressing the diagnostic appli-
          volunteers. 8                                      cation of ultrasound for neurologic pathology was identified.
                                                             This article by Hightower et al.,  describes the pathophysi-
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          Given the lack of literature outside of the Journal of Special   ology and logistics related to detecting elevated intracranial
          Operations Medicine, a focused search was conducted within   pressure by measuring optic nerve sheath diameter. The au-
          this journal. This search was conducted using the PubMed da-  thors argue that employing ultrasound for this purpose could
          tabase with the following keywords: ((FoCUS) OR (PoCUS)   be beneficial in military field setting, especially for SOF medics
          OR (Ultrasound) OR (Ultrasonography))  AND (Journal of   who have received the necessary training.
          Special Operations Medicine)). This search occurred on Oc-
          tober 9, 2023, resulting in 120 initial search results. All 120   Additionally, the previously discussed article by Morgan et
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          abstracts were reviewed by the author with articles describing   al.  references the procedural application of ultrasound in
          the clinical use of ultrasound by SOCMs or advocating for the   relation to neurologic structures. In this article, 3 of the 109
          implementation of ultrasound among SOCMs being selected   reviewed cases were of a procedural nature, with the authors
          for inclusion and further review. The included articles were   defining procedures as intravenous access or regional anesthe-
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          then categorized by organ system, with distinctions made be-  sia blocks.  However, no additional details were provided re-
          tween operational descriptions and advocacy of use, as well   garding the specific types of regional blocks performed or the
          as whether the described examination was procedural or di-  circumstances surrounding their application.
          agnostic in nature. The summarized findings are presented in
          Table 1 and discussed in the following sections.   Respiratory Articles
                                                             In this review, the author identified three articles supporting
                                                             the use of ultrasound by SOF medics for diagnosing respira-
          Literature Review, Content
                                                             tory pathology, specifically pneumothoraces. The first article,
          General Overview / Multiple Systems Articles       an observational study by Monti et al.,  involved 22 non-
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          Among the 20 articles included in this review there were 2 that   physician military members, including physician assistants
          presented a broad description of military and Special Opera-  (without prior ultrasound training), SOCM and conventional
          tions Forces (SOF) medicine ultrasound use across a variety   medics, veterinary technicians, and food inspectors. The study
          of organ systems. The first was a retrospective description of   demonstrated that this diverse cohort was able to successfully
          a Special Forces battalion’s use of ultrasound during a deploy-  detect a pneumothorax in 44 hemithoraces using a pig model,
          ment, and the second was a literature review covering military   achieving high sensitivity and specificity after a brief train-
          use of ultrasound, specifically in SOF medicine.   ing presentation. The second article, an observational study
                                                             by Meadows et al., detailed 43 conventional medics examin-
          The  first general article  was  a retrospective  observational   ing 258 hemithoraces in a cadaver model and identifying the
          study by Morgan et al. based on quality assurance data from   presence of a pneumothorax with a high level of sensitivity
          109 studies conducted  by 29  Special  Forces  medics  from a   and specificity.  The third article presented a clinical scenario
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