Long-term Outcomes of Cricothyroidotomy Versus Endotracheal Intubation in Military Personnel: A Retrospective Comparative Analysis Cohort Study.

INTRODUCTION: Emergency airway management is critical in trauma care. Cricothyroidotomy (CRIC) is a salvage procedure commonly used in failed endotracheal intubation (ETI) or difficult airway cases. However, more data is needed regarding the short and long-term complications associated with CRIC. This study aimed to evaluate the Israel Defense Forces experience with CRIC over the past 2 decades and compare the short-term and long-term sequelae of prehospital CRIC and ETI. METHODS: Data on patients undergoing either CRIC or ETI in the prehospital setting between 1997 and 2021 were extracted from the Israel Defense Forces trauma registry. Patient data was then cross-referenced with the Israel national trauma registry, documenting in-hospital care, and the Israel Ministry of Defense rehabilitation department registry, containing long-term disability files of military personnel. RESULTS: Of the 122 patients with short-term follow-up through initial hospitalization, 81% underwent prehospital ETI, while 19% underwent CRIC. There was a higher prevalence of military-related and explosion injuries among the CRIC patients (96% versus 65%, P = 0.02). Patients who underwent CRIC more frequently exhibited oxygen saturations below 90% (52% versus 29%, P = 0.002). Injury Severity Score was comparable between groups.No significant difference was found in intensive care unit length of stay and need for tracheostomy. Regarding long-term complications, with a median follow-up time of 15 y, CRIC patients had more upper airway impairment, with most suffering from hoarseness alone. One patient in the CRIC group suffered from esophageal stricture. CONCLUSIONS: This retrospective comparative analysis did not reveal significant short or long-term sequelae among military personnel who underwent prehospital CRIC. The long-term follow-up did not indicate severe aerodigestive impairments, thus suggesting that this technique is safe. Along with the high success rates attributed to this procedure, we recommend that CRIC remains in the armamentarium of trauma care providers. The findings of this study could provide valuable insights into managing difficult airway in trauma care and inform clinical decision-making in emergency settings.

Predictors of Short-Term Trauma Laparotomy Outcomes in an Integrated Military-Civilian Health System: A 23-Year Retrospective Cohort Study.

Background: Trauma laparotomy (TL) remains a cornerstone of trauma care. We aimed to investigate prehospital measures associated with in-hospital mortality among casualties subsequently undergoing TLs in civilian hospitals. Methods: This retrospective cohort study cross-referenced the prehospital and hospitalization data of casualties treated by Israel Defense Forces-Medical Corps teams who later underwent TLs in civilian hospitals between 1997 and 2020. Results: Overall, we identified 217 casualties treated by IDF-MC teams that subsequently underwent a TL, with a mortality rate of 15.2% (33/217). The main mechanism of injury was documented as penetrating for 121/217 (55.8%). The median heart rate and blood pressure were within the normal limit for the entire cohort, with a low blood pressure predicting mortality (65 vs. 127, p < 0.001). In a multivariate analysis, prehospital endotracheal intubation (ETI), emergency department Glasgow coma scores of 3-8, and the need for a thoracotomy or bowel-related procedures were significantly associated with mortality (OR 6.8, p < 0.001, OR = 48.5, p < 0.001, and OR = 4.61, p = 0.002, respectively). Conclusions: Prehospital interventions introduced throughout the study period did not lead to an improvement in survival. Survival was negatively influenced by prehospital ETI, reinforcing previous observations of the potential deleterious effects of definitive airways on hemorrhaging trauma casualties. While a low blood pressure was a predictor of mortality, the median systolic blood pressure for even the sickest patients (ISS > 16) was within normal limits, highlighting the challenges in triage and risk stratification for trauma casualties.

Hemorrhagic Shock in Isolated and Non-Isolated Pelvic Fractures: A Registries-Based Study.

BACKGROUND: Pelvic fractures resulting from high-energy trauma can frequently present with life-threatening hemodynamic instability that is associated with high mortality rates. The role of pelvic exsanguination in causing hemorrhagic shock is unclear, as associated injuries frequently accompany pelvic fractures. This study aims to compare the incidence of hemorrhagic shock and in-hospital outcomes in patients with isolated and non-isolated pelvic fractures. METHODS: Registries-based study of trauma patients hospitalized following pelvic fractures. Data from 1997 to 2021 were cross-referenced between the Israel Defense Forces Trauma Registry (IDF-TR), documenting prehospital care, and Israel National Trauma Registry (INTR) recording hospitalization data. Patients with isolated pelvic fractures were defined as having an Abbreviated Injury Scale (AIS) <3 in other anatomical regions, and compared with patients sustaining pelvic fracture and at least one associated injury (AIS ≥ 3). Signs of profound shock upon emergency department (ED) arrival were defined as either a systolic blood pressure <90 mmHg and/or a heart rate >130 beats per min. RESULTS: Overall, 244 hospitalized trauma patients with pelvic fractures were included, most of whom were males (84.4%) with a median age of 21 years. The most common injury mechanisms were motor vehicle collisions (64.8%), falls from height (13.1%) and gunshot wounds (11.5%). Of these, 68 (27.9%) patients sustained isolated pelvic fractures. In patients with non-isolated fractures, the most common regions with a severe associated injury were the thorax and abdomen. Signs of shock were recorded for 50 (20.5%) patients upon ED arrival, but only four of these had isolated pelvic fractures. In-hospital mortality occurred among 18 (7.4%) patients, all with non-isolated fractures. CONCLUSION: In young patients with pelvic fractures, severe associated injuries were common, but isolated pelvic fractures rarely presented with profound shock upon arrival. Prehospital management protocols for pelvic fractures should prioritize prompt evacuation and resuscitative measures aimed at addressing associated injuries.

Survival following Prehospital Traumatic Cardiac Arrest Resuscitation in the Israel Defense Forces: A Retrospective Study.

BACKGROUND: Prehospital traumatic cardiac arrest (TCA) is associated with a poor prognosis and requires urgent interventions to address its potentially reversible causes. Resuscitative efforts of TCA in the prehospital setting may entail significant resource allocation and impose added tolls on caregivers. The Israel Defense Forces Medical Corps (IDF-MC) instructs clinicians to perform a set protocol in the case of TCA, providing prompt oxygenation, chest decompression and volume resuscitation. This study investigates the settings, interventions, and outcomes of TCA resuscitation by IDF-MC teams over 25 years in both combat and civilian settings. METHODS: Retrospective study of the IDF-MC Trauma Registry between 1997-2022. Search criteria were applied to identify cases where the TCA protocol was initiated. A manual review of cases matching the search criteria was performed by two curators to determine the indications, interventions, and outcomes of casualties with prehospital TCA. Patients for whom interventions were performed outside of the TCA protocol, such as with measurable vital signs, were excluded. The primary outcome was survival to hospital admission, with the secondary outcome being return of vital signs in the prehospital setting. RESULTS: Following case review, 149 patients with prehospital TCA were included, with a median age of 21 (interquartile range 19-27). Eighty-four (56.4%) presented with TCA in military or combat settings, with gunshot wounds and blast injuries being the most common mechanisms in this group. For 56 casualties (37.8%), all components of the protocol were performed (oxygenation, chest decompression, and volume resuscitation). Five (3.4%) casualties had return of vital signs in the prehospital setting, but none survived to hospital admission. CONCLUSION: The prognosis of prehospital TCA is poor, and efforts to address its potentially reversible causes may often be futile. These notions may be further emphasized in military settings, where resources are limited, and extensive penetrating injuries are more common.

Close-Range Fire Inflicting Behind Armor Blunt Trauma: Case-Series and Implications for Battlefield Care.

Behind armor blunt trauma (BABT) is a non-penetrating injury caused by energy transfer and rapid deformation of protective body armor. Although modern military body armor is designed to prevent penetrating trunk injuries, high-energy projectiles can produce a significant energy transfer to tissues behind the armor and inflict injuries such as fractures or organ contusions. However, knowledge of BABT is limited to biomechanical and cadaver modeling studies and rare case reports. We report two cases of BABT resulting from close-range fire and discuss the potential implications for triaging patients with BABT in battlefield scenarios. In the first case, a 19-year-old male soldier sustained a single close-range 5.56-mm assault rifle gunshot to his chest body armor. The soldier initially reported mild pain in the parasternal region and assessment revealed a 4 cm × 3 cm skin abrasion. Following emergency department evaluation, the soldier was diagnosed with a non-displaced transverse fracture of the sternal body. In the second case, a 20-year-old male sustained five machine gun bullets (7.62 mm) to his body armor. Computed tomography of the chest revealed pulmonary contusions in the right lower and middle lobes. Both soldiers achieved full recovery and returned to combat duty within several weeks. These cases highlight the potential risks of energy transfer from high-velocity projectiles impacting body armor and the need for frontline providers to be aware of the risk of underlying blunt injuries. Further reporting of clinical cases and modeling studies using high-velocity projectiles could inform recommendations for triaging, evacuating, and assessing individuals with BABT.

The Association Between Glasgow Coma Scale Scores and PTSD in Military Trauma Casualties: Does Mental Status Following Injury Play a Role in PTSD Development?

BACKGROUND: Posttraumatic stress disorder (PTSD) is prevalent among military personnel and may arise following a wide range of traumatic exposures. Consciousness level following traumatic injury may play a role in the development of PTSD, but its effects have been primarily investigated in the context of traumatic brain injury. METHODS: Registry-based study surveying three databases documenting care from point of injury to long-term rehabilitation of traumatic injuries among military personnel. The study population was divided according to Glasgow Coma Scale (GCS) scores upon emergency department admission (GCS scores 15, 13 and 14, 9-12, and 3-8), with PTSD diagnoses being determined according to disability claim records. Multivariable logistic regression was utilized to determine the association between GCS score at admission and PTSD. RESULTS: Overall, 3,376 military personnel hospitalized following traumatic injuries between 1997 and 2020 were included. The majority were male (92.3%), with a median age of 20 (interquartile range 19-22) at the injury time. Of these, 569 (16.9%) were diagnosed with PTSD according to disability claims, with a median follow-up time of 10.9 years. PTSD diagnosis was most prevalent (30.3% of patients), with a GCS score of 13 and 14. In the adjusted multivariable model, a GCS score of 13 and 14 was associated with significantly higher odds of PTSD diagnosis when compared to a GCS score of 15 (odds ratio 2.19, 95% CI, 1.21-3.88). The associations of other GCS groupings with PTSD diagnosis were nonsignificant. CONCLUSIONS: Minimally impaired consciousness following traumatic injuries is associated with increased odds of PTSD. The role of patient awareness, analgesia, and sedation following an injury in developing PTSD warrants further investigation and could guide early diagnosis and preventive interventions.

Low-titer group O whole blood in military ground ambulances: Lessons from the Israel Defense Forces initial experience.

BACKGROUND: Cold-stored low-titer group O whole blood (LTOWB) has become increasingly utilised in both prehospital and in-hospital settings for resuscitation of traumatic haemorrhage. However, implementing the use of LTOWB to ground medical teams has been limited due to logistic challenges. METHODS: In 2022, the Israel Defense Forces (IDF) started using LTOWB in ambulances for the first time in Israel. This report details the initial experience of this rollout and presents a case-series of the first patients treated with LTOWB. RESULTS: Between January-December 2022, seven trauma patients received LTOWB administered by ground IDF intensive care ambulances after presenting with profound shock. Median time from injury to administration of LTOWB was 35 min. All patients had evidence of severe bleeding upon hospital arrival with six undergoing damage control laparotomy and all but one surviving to discharge. CONCLUSIONS: The implementation of LTOWB in ground medical units is in its early stages, but continued experience may demonstrate its feasibility, safety, and effectiveness in the prehospital setting. Further research is necessary to fully understand the indications, methodology, and benefits of LTOWB in resuscitating severely injured trauma patients in this setting.

Implications for future humanitarian aid missions: Lessons from point-of injury and hospital care for Syrian refugees.

BACKGROUND: Warzone humanitarian medical aid missions are infrequent and applying lessons from these missions is vital to ensuring preparedness for future crises. Between 2013-2018, the Israel Defense Forces Medical Corps (IDF-MC) provided humanitarian medical aid to individuals injured in the Syrian Civil War who chose to seek medical assistance at the Israeli-Syrian border. Patients requiring care surgical or advanced care were transferred to civilian medical centers within Israel. This study aims to describe the injury characteristics and management of hospitalized Syrian Civil War trauma patients over a five-year period. METHODS: Retrospective cohort analysis cross-referencing data from the IDF trauma registry, documenting prehospital care, and the Israel National Trauma Registry, documenting in-hospital care, between 2013 and 2018. Syrian trauma patients hospitalized in Israeli hospitals were cross-referenced between the two registries. Multivariable logistic regression was applied to identify independent factors associated with in-hospital mortality. RESULTS: Overall, 856 hospitalized trauma patients were included following definitive cross-matching. The median age was 23 years, and 93.3% were males. Blast (n = 532; 62.1%) and gunshot (n = 241; 28.2%) were the most common injury mechanisms. Injury Severity Score was ≥25 for 28.8% of patients and most common body regions with severe injury (Abbreviated Injury Scale≥3) were the head (30.7%) and thorax (25.0%). Intensive care unit admission was required for 40.1% of patients, and the median hospital stay was 13 days. In-hospital mortality was recorded for 73 (8.5%). Signs of shock upon emergency department admission and severe head injury were significantly associated with mortality in the adjusted model whereas age of <18 years was associated with decreased odds for in-hospital mortality. CONCLUSIONS: Trauma patients hospitalized in Israel following injuries sustained in the Syrian Civil War were characterized by a high prevalence of blast injuries with concomitant involvement of several body regions. Future missions should ensure preparedness for complex multi-trauma, often involving the head, and ensure high intensive care and surgical capacities.

Adopting a culture of remote damage control resuscitation in the military: Insights from the Israel defense forces decade of experience.

BACKGROUND: Remote damage control resuscitation (RDCR) aims to apply the principles of damage control resuscitation to prehospital and austere care, emphasizing early control of compressible hemorrhage, balanced volume resuscitation, and the prevention or correction of coagulopathy, acidosis, hypothermia, and hypocalcemia. Over the past decades, the Israel Defense Forces Medical Corps (IDF-MC) has made significant efforts to integrate the principles of RDCR into prehospital trauma care in the military. STUDY DESIGN AND METHODS: In this article, we reflect on the implementation of RDCR in the prehospital setting by the IDF-MC, sharing successes, challenges, considerations on guideline changes, and their assessment over time. RESULTS: The implementation of RDCR has resulted in changes in clinical practice guidelines and training programs, with increased awareness and adoption of RDCR principles among both medical and non-medical military personnel. The implementation of these principles and adherence to guideline changes have been analyzed using the Israel Defense Forces Trauma Registry. DISCUSSION: By sharing our experiences, we hope to provide valuable insights for other military and civilian organizations seeking to adopt similar protocols for prehospital care. Continuous evaluation and refinement of guidelines and training programs will be essential for ongoing implementation and advancement of RDCR in the prehospital setting.

Association Between Profound Shock Signs and Peripheral Intravenous Access Success Rates in Trauma Patients in the Prehospital Scenario: A Retrospective Study.

BACKGROUND: Hemorrhage is the leading cause of preventable death in trauma patients, and establishment of intravenous (IV) access is essential for volume resuscitation, a key component in the treatment of hemorrhagic shock. IV access among patients in shock is generally considered more challenging, although data to support this notion are lacking. METHODS: In this retrospective registry-based study, data were collected from the Israeli Defense Forces Trauma Registry (IDF-TR) regarding all prehospital trauma patients treated by IDF medical forces between January 2020 and April 2022, for whom IV access was attempted. Patients younger than 16 years, nonurgent patients, and patients with no detectable heart rate or blood pressure were excluded. Profound shock was defined as a heart rate >130 or a systolic blood pressure <90 mm Hg, and comparisons were made between patients with profound shock and those not exhibiting such signs. The primary outcome was the number of attempts required for first IV access success, which was regarded as an ordinal categorical variable: 1, 2, 3 and higher and ultimate failure. A multivariable ordinal logistic regression was performed to adjust for potential confounders. Patients' sex, age, mechanism of injury and best consciousness level, as well as type of event (military/nonmilitary), and the presence of multiple patients were included in the ordinal logistic regression multivariable analysis model based on previous publications. RESULTS: Five hundred thirty-seven patients were included, 15.7% of whom were recorded as having signs of profound shock. Peripheral IV access establishment first attempt success rates were higher in the nonshock group, and there was a lower rate of unsuccessful attempts in this group (80.8% vs 67.8% for the first attempt, 9.4% vs 16.7% for the second attempt, 3.8% vs 5.6% for the third and further attempts, and 6% vs 10% unsuccessful attempts, P = .04). In the univariable analysis, profound shock was associated with requirement for an increased number of IV attempts (odds ratio [OR], 1.94; confidence interval [CI], 1.17-3.15). The ordinal logistic regression multivariable analysis demonstrated that profound shock was associated with worse results regarding primary outcome (adjusted odds ratio [AOR], 1.84; CI, 1.07-3.10). CONCLUSIONS: The presence of profound shock in trauma patients in the prehospital scenario is associated with an increased number of attempts required for IV access establishment.

Prehospital Tranexamic Acid Administration in Pediatric Trauma Patients: A Propensity-Matched Analysis of the Israeli Defense Forces Registry.

OBJECTIVES: Tranexamic acid (TXA) administration confers a survival benefit in bleeding trauma patients; however, data regarding its use in pediatric patients are limited. This study evaluates the prehospital treatment with TXA in pediatric trauma patients treated by the Israel Defense Forces Medical Corps (IDF-MC). DESIGN: Retrospective, cohort study using the Israel Defense Forces registry, 2011-2021. PATIENTS: Pediatric trauma patients less than 18 years old. We excluded patients pronounced dead at the scene. INTERVENTIONS: None. SETTING: All cases of pediatric trauma in the registry were assessed for treatment with TXA. Propensity score matching was used to assess the association between prehospital TXA administration and mortality. MEASUREMENTS AND MAIN RESULTS: Overall, 911 pediatric trauma patients were treated with TXA by the IDF-MC teams; the median (interquartile) age was 10 years (5-15 yr), and 72.8% were male. Seventy patients (7.6%) received TXA, with 52 of 70 (74%) receiving a 1,000 mg dose (range 200-1,000 mg). There were no prehospital adverse events associated with the use of TXA (upper limit of 95% CI for 0/70 is 4.3%). Compared with pediatric patients who did not receive TXA, patients receiving TXA were more likely to suffer from shock (40% vs 10.7%; p < 0.001), sustain more penetrating injuries (72.9% vs 31.7%; p < 0.001), be treated with plasma or crystalloids (62.9% vs 11.4%; p < 0.001), and undergo more lifesaving interventions (24.3% vs 6.2%; p < 0.001). The propensity score matching failed to identify an association between TXA and lesser odds of mortality, although a lack of effect (or even adverse effect) could not be excluded (non-TXA: 7.1% vs TXA: 4.3%, odds ratio = 0.584; 95% CI 0.084-3.143; p = 0.718). CONCLUSIONS: Although prehospital TXA administration in the pediatric population is feasible with adverse event rate under 5%, more research is needed to determine the appropriate approach to pediatric hemostatic resuscitation and the role of TXA in this population.

Isolated limb fractures - the underestimated injury in the Israeli Defence Forces (IDF).

INTRODUCTION: Musculoskeletal injuries dominate warfare-related trauma and differ from civilian settings in higher hospitalization costs, morbidity, and mortality. Partly due to introduction of personal protective equipment in the Israel Defence Force (IDF) to minimize head and torso injuries while the extremities remained unprotected. This study describes military extremity injury patterns, prehospital treatment and injury sequela regarding return-to-duty and disability compensation. METHODS: This retrospective study examined cases of battle and non-battle trauma casualties treated by the IDF Medical Corps from 2013 to 2020. Data from the IDF Trauma Registry (IDF-TR) was merged with The Israeli National Trauma Registry (INTR). Cases with high morbidity discharged from military service were compared with lower morbidity patients who returned to active duty service. RESULTS: Out of 1360 injured soldiers, 280 (20.6%) were found to have isolated limb fractures (ILFs). High morbidity casualties had more open fractures (63% vs. 42%) and higher involvement of lower extremities (79% vs. 58%) (p < 0.001), higher rates of tourniquets use (28% compared to 9%, p < 0.001), external fixation (34% vs. 19%, p < 0.001) and amputations (9% vs. 1%, p = 0.003), required more rehabilitation (34% vs. 7%, p < 0.001), and had 46% medical disabilities compared to 24% with low morbidity (p < 0.001). CONCLUSIONS: ILFs are associated with significant morbidity and disability. High morbidity is associated with high energy, scar-producing, lower-extremity open fractured limbs treated by tourniquets. Future studies should evaluate whether junctional or extremity protective gear is combat feasible and whether introducing Clinical Practice Guidelines to manage suspected limb fractures can decrease morbidity rates and improve return to duty.

Traumatic maxillofacial injuries: Patterns, outcomes, and long-term follow-up of a military cohort.

BACKGROUND/AIMS: Maxillofacial trauma poses a distinct challenge on the modern battlefield, and data on its long-term implications are scarce. The aim of this study was to investigate maxillofacial injury characteristics, outcomes, and complications along the continuum of care among hospitalized military personnel from the pre-hospital setting through long-term rehabilitation. MATERIALS AND METHODS: A registry-based study was undertaken of three national trauma and rehabilitation registries: The Israel Defense Forces Trauma Registry (IDF-TR), which records pre-hospital data. The Israeli National Trauma Registry for in-hospital data and the Israel Ministry of Defense Rehabilitation Department (MOD-RD) registry contain long-term disability data. The cohort comprised IDF soldiers who suffered maxillofacial injuries between 1997 and 2020. RESULTS: A total of 672 patients with maxillofacial injuries were included in the study, and 6.4% of all trauma admissions were related to maxillofacial injuries. Of these, 366 (54%) were injured in non-military (NMC) circumstances, and 306 (46%) were wounded in military circumstances (MC). The mechanisms of injury were mainly traffic-related among the NMC group compared with an explosion in the MC group. Maxillofacial fractures were frequently associated with traumatic brain injuries with higher rates in the NMC group than in the MC group (55% vs. 30%, p < .001). In a multivariate analysis, zygomatic and orbital fractures were associated with higher odds of concomitant head injury. The most common categories of long-term disability included central nervous system disorders, skull injuries, epilepsy, hearing impairment, ophthalmologic conditions, and post-traumatic stress disorder. CONCLUSIONS: Maxillofacial injuries are often associated with concomitant traumatic brain injury. Long-term disabilities associated with these injuries included the central nervous system, hearing, ophthalmologic impairments, and post-traumatic stress disorder.

Spontaneous Pneumomediastinum Resulting From Passionate Cheering at a Soccer Match.

Spontaneous pneumomediastinum is a rare and self-limiting clinical entity, often triggered by activities causing acute changes in intrathoracic pressure such as childbirth, strenuous exercise, vomiting, and coughing. We present a case of a young male soldier who developed spontaneous pneumothorax following persistent yelling while attending a soccer match. Spontaneous pneumomediastinum may be preceded by a variety of strenuous activities, and clinicians should be aware of this entity when performing the evaluation of patients with nonspecific symptoms such as chest pain and dyspnea. Patients diagnosed with pneumomediastinum but presenting with additional findings such as vomiting and pleural effusion should be thoroughly evaluated to rule out potentially life-threatening mediastinal organ injury. Return to military duty should be determined by clinical reevaluation and follow-up imaging findings.

Blast Injury Patterns Among Israel Defense Forces Fatalities.

INTRODUCTION: The incidence of blast injuries on the battlefield has risen over the last several decades. In order to improve prevention and treatment, it is essential to understand the severity and bodily distribution of these injuries. This study aims to characterize blast injury patterns among IDF fatalities. MATERIALS AND METHODS: This is a descriptive, retrospective study on postmortem reports of military-blast fatalities between the years 1982 and 2021. Body regions injured according to the Abbreviated Injury Scale (AIS) were described. The frequency of body region injury combinations was mapped, and the correlation between injured body regions was calculated using Pearson's coefficient. Analysis of a subgroup with a postmortem computed tomography (CT-PM) or autopsy was performed, describing severe (AIS ≥ 3) injury patterns. RESULTS: Overall, 222 fatalities suffered from blast injury, with most injuries affecting the upper and lower extremities (63.7% and 66.5%, respectively), followed by the head (57.1%) and the thorax (56.6%). The median number of injured body regions was 4 (interquartile range, 2-5). The most frequent injury combinations were the upper and lower extremities (51%), the upper extremities and the thorax (45%), and the lower extremities and the thorax (41%). In all, 47/222 (21.2%) fatalities had a documented autopsy or CT-PM report. Among the fatalities with CT-PM or autopsy, the head (63.8%) and the thorax (57.4%) were most frequently severely injured (AIS ≥ 3). CONCLUSIONS: Among blast fatalities in the military setting, the extremities were most commonly injured. However, data suggest that the head and thorax are more likely to sustain severe blast injuries resulting in mortality. Blast injuries in this cohort were characterized by concomitant involvement of several regions. Development of protective gear to minimize the multisystem injuries inflicted by blast injuries is warranted and should be focused on distinct types and anatomical distribution of severe blast injuries as reported in this study. LEVEL OF EVIDENCE: Level III, Retrospective analysis.

Spinal Backboard-Necessity or Hazard? The IDF Clinical Practice Guidelines and Policy.

INTRODUCTION: Prehospital spinal immobilization using a cervical collar and a backboard has been standard practice for suspected spinal cord injuries (SCIs) since the 1960s. Multiple studies have shown that the disadvantages of the spinal backboard outweigh its advantages. This report aims to present a review of the current literature along with the revised IDF protocol regarding patients with suspected SCI. METHODS: In 2019, the IDF Medical Corps (IDFMC) convened a multidisciplinary expert committee to revise the IDFMC protocols regarding the use of spinal backboards. Prior to convening the committee, a review of the pertinent literature was done by conducting a thorough clinical evaluation in "PubMed" and "Google Scholar" databases to identify recent studies investigating traumatic SCI and the prehospital military use of spinal backboards. RESULTS: There were no documented studies that have managed to prove the efficacy of spinal backboards to prevent exacerbation of spinal injuries during mobilization. Despite being a good tool for extraction from vehicles and combat arenas, more than 11 studies have shown that backboards may even result in adverse outcomes such as pain due to the contact between board and skin, the formation of decubitus ulcers, hypothermia, and inadequate ventilation. CONCLUSION: In light of the evidence showing the potential harmful effects of the routine use of spinal backboards, the IDF guidelines have been revised and now recommends avoiding the routine use of spinal backboards and using a standard stretcher for transporting potential SCI patients. Current IDF guidelines recommend using a backboard for the extraction of an entrapped patient and for obtunded or unconscious patients with obvious deformity or mechanism for spinal trauma.

SARS-CoV-2 Omicron Variant: Clinical Presentation and Occupational Implications in Young and Healthy IDF Soldiers.

INTRODUCTION: To this date, there is little known about the symptoms, their duration, and occupational implications of Coronavirus disease (COVID-19) in the military population. Decisions regarding implementing precaution measures are based on data deriving from the general population. Moreover, the Omicron variant seems to cause a disease with lesser severity than previous variants. We aimed to describe the clinical presentation and estimate the loss of workdays due to mild COVID-19 during an Omicron predominant wave among a young, healthy, and mostly vaccinated military population. MATERIALS AND METHODS: A cross-sectional, survey-based study among IDF soldiers who replied to an online questionnaire following recovery from COVID-19. Data included self-reported vaccination status, symptoms presentation and duration, and service-related sick days. Student's t-test and chi-square test of independence were used to compare differences in continuous and categorical variables, respectively. A binary logistic regression analysis was performed to estimate the odds ratio and 95% CIs for prolonged symptom duration (4 days and above) by participants' characteristics. The IDF medical corps institutional review board approved this study. RESULTS: A total of 199 soldiers, with a mean age of 21.9 years, were included in the study. Upper respiratory tract symptoms, headache, and constitutional symptoms were found to be the most common among symptomatic soldiers. The median reported time for inability to continue the daily routine, including work, was 5 days [Interquartile range (IQR), 0-10]. Median duration of symptoms was 4 days (IQR, 0-10). In addition, women were found to have longer symptomatic disease (odds ratio = 2.34; 95% CI, 1.20-4.52). CONCLUSIONS: Our findings demonstrate that even among a young and fully vaccinated population, COVID-19 caused by the Omicron variant may result in substantial medical leave from military service, compared to common cold or influenza virus infection. Our study sample was relatively small; however, the response rate was high and our results shed light on the yet-to-be fully characterized Omicron variant-related COVID-19. Despite the current common perception of COVID-19 as a self-limiting mild disease with low burden of symptoms, our findings show the potential occupational burden of infection with COVID-19 on military units and their readiness and could be considered when discussing public health restrictions and further steps taken to minimize outbreaks ramifications.

Femur fractures and hemorrhagic shock: Implications for point of injury treatment.

BACKGROUND: Femur shaft fractures (FSF) are perceived as potentially life-threatening injuries due to significant blood loss. However, these injuries are rarely the sole cause of hemorrhagic shock. Clinical practice guidelines for the prehospital management of FSF are inconsistent, especially concerning the use and timing of traction splinting which is postulated to reduce bleeding. We sought to understand the association between FSF and shock, and identify risk factors for shock among casualties with FSF. METHODS: This is a retrospective analysis of trauma casualties treated by Israeli Defense Forces (IDF) medical teams between the years 2000-2020 and suffering from isolated FSF. Prehospital data from the IDF-Medical Corps Trauma Registry was merged with hospitalization data from the Israeli National Trauma Registry. Isolated FSF was analyzed by excluding casualties with an Injury Severity Score ≥ 16 and an Abbreviated Injury Scale ≥ 3 in other anatomical regions. Shock was defined as systolic blood pressure ≤ 90 mmHg and/or heart rate ≥ 130 beats per minute. A case series review was performed for casualties in shock with isolated FSF injuries. Multivariable logistic regression was performed to assess for injury characteristics associated with shock. RESULTS: During the study period, we identified 213 patients with FSF (4.9%) of which 129 were isolated injuries. Overall, 9.9% and 26.3% of casualties had concurrent thoracic and abdominal injuries, respectively. Most FSF were due to motor vehicle accidents (60.1%) and shock was present in 17.1%. In isolated FSF patients, gunshot and explosive injury mechanisms were prevalent (65.0%) with severe shock being present in 8.5%. Open fractures were present in 72.7% of isolated FSF patients in shock. Open FSF injuries were characterized by prehospital bleeding which was difficult to control. In a multivariable logistic regression model, severe concomitant injuries were associated with increased odds of shock. CONCLUSIONS: Shock rarely presents when FSF is the primary injury. Such casualties predominantly suffer from open FSF which may present as difficult to control thigh bleeding. Our findings do not support urgent prehospital leg traction splinting which may result in delayed evacuation to definitive care. Casualties with shock and FSF should be investigated for other sources of bleeding. Leg traction splinting should be reserved for suspected FSF injuries with shock or persistent thigh bleeding.

The Influence of Gender Bias: Is Pain Management in the Field Affected by Health Care Provider's Gender?

INTRODUCTION: Appropriate pain management indicates the quality of casualty care in trauma. Gender bias in pain management focused so far on the patient. Studies regarding provider gender are scarce and have conflicting results, especially in the military and prehospital settings. STUDY OBJECTIVE: The purpose of this study is to investigate the effect of health care providers' gender on pain management approaches among prehospital trauma casualties treated by the Israel Defense Forces (IDF) medical teams. METHODS: This retrospective cohort study included all trauma casualties treated by IDF senior providers from 2015-2020. Casualties with a pain score of zero, age under 18 years, or treated with endotracheal intubation were excluded. Groups were divided according to the senior provider's gender: only females, males, or both female and male. A multivariate analysis was performed to assess the odds ratio of receiving an analgesic, depending on the presence of a female senior provider, adjusting for potential confounders. A subgroup analysis was performed for "delta-pain," defined as the difference in pain score during treatment. RESULTS: A total of 976 casualties were included, of whom 835 (85.6%) were male. Mean pain scores (SD) for the female only, male only, and both genders providers were 6.4 (SD = 2.9), 6.4 (SD = 3.0), and 6.9 (SD = 2.8), respectively (P = .257). There was no significant difference between females, males, or both female and male groups in analgesic treatment, overall and per specific agent. This remained true also in the multivariate model. Delta-pain difference between groups was also not significant. Less than two-thirds of casualties in this study were treated for pain among all study groups. CONCLUSION: This study found no association between IDF Medical Corps providers' gender and pain management in prehospital trauma patients. Further studies regarding disparities in acute pain treatment are advised.

Remote Damage Control Resuscitation: A Case Report of Hemorrhagic Shock Secondary to Multiple Gunshot Wounds.

Hypovolemic shock is the leading cause of preventable death on the battlefield. Remote damage control resuscitation has evolved dramatically in the past decade by introducing novel treatments and approaches to bleeding in the prehospital setting. This report presents a case of a casualty who sustained multiple gunshot wounds to the chest and gluteal regions and suffered from hemorrhagic shock with an Injury Severity Score of 34. The casualty was treated at the point of injury and during evacuation according to the IDF's remote damage control resuscitation algorithm utilizing the range of blood products available in the IDF. Prompt identification of the mechanism of injury, clinical and tactical decision-making, and immediate advanced medical care through several prehospital medical evacuation platforms culminated in this casualty's survival. This case emphasizes the importance of medical advancements in prehospital field care and guideline-directed treatment to improve casualty survival.