Outcomes after Prehospital Cricothyrotomy.

BACKGROUND: Prehospital surgical cricothyrotomies and complications from placement are an important and under-evaluated topic for both the military and civilian prehospital populations. This study uses the Department of Defense Trauma Registry to identify complications and the incidence of complications in prehospital combat surgical cricothyrotomies. METHODS: A secondary analysis of previously described prehospital-based dataset from the Department of Defense Trauma Registry (DODTR) was performed. Casualties who had a prehospital cricothyrotomy performed were isolated and assessed for documented airway injuries and surgical procedures after hospital admission. RESULTS: There were 25,8976 casualties in the original dataset, of which 251 met inclusion for this analysis. The median age was 25 and most (98%) were male. Explosives were most frequent (55%) followed by firearm (33%) mechanisms. Most were host nation partner forces (35%) and humanitarian (32%) casualties. The median injury severity score was 24. The most frequent seriously injured body region was the head/neck (61%). Most (61%) were discharged alive. Within the 251, 14% had a complication noted, most commonly requiring tracheostomy revision (5%). CONCLUSIONS: Cricothyrotomies are rarely performed, but when they are performed and the casualty survives long enough to reach a military treatment facility with surgical capabilities, the incidence of near-term and long-term complications is high. A better understanding of outcomes associated with this procedure will enable more targeted training and technology development.

Expert Consensus Panel Recommendations for Selection of the Optimal Supraglottic Airway Device for Inclusion to the Medic's Aid Bag.

INTRODUCTION: Airway obstruction is the second leading cause of potentially survivable death on the battlefield. The Committee on Tactical Combat Casualty Care (CoTCCC) has evolving recommendations for the optimal supraglottic airway (SGA) device for inclusion to the medics' aid bag. METHODS: We convened an expert consensus panel consisting of a mix of 8 prehospital specialists, emergency medicine experts, and experienced combat medics, with the intent to offer recommendations for optimal SGA selection. Prior to meeting, we independently reviewed previously published studies conducted by our study team, conducted a virtual meeting, and summarized the findings to the panel. The studies included an analysis of end-user after action reviews, a market analysis, engineering testing, and prospective feedback from combat medics. The panel members then made recommendations regarding their top 3 choices of devices including the options of military custom design. Simple descriptive statistics were used to analyze panel recommendations. RESULTS: The preponderance (7/8, 88%) of panel members recommended the gel-cuffed SGA, followed by the self-inflating-cuff SGA (5/8, 62%) and laryngeal tube SGA (5/8, 62%). Panel members expressed concerns primarily related to the (1) devices' tolerance for the military environment, and (2) ability to effectively secure the gel-cuffed SGA and the self-inflating-cuff SGA during transport. CONCLUSIONS: A preponderance of panel members selected the gel-cuff SGA with substantial feedback highlighting the need for military-specific customizations to support the combat environment needs.

Staff Augmentation during Disaster Response.

This article outlines a disaster medicine team response to the Texas-Mexico border during a coronavirus disease 2019 (COVID-19) surge. The team consisted of emergency medicine attending providers, as well as a nurse practitioner and a physician assistant, who were asked to work in the intensive care unit (ICU) under the guidance of an intensivist. The article highlights the medicolegal and ethical implications of providers working outside of their designated scope of practice. A framework for future staff augmentation during a disaster is explained.

Interventions to improve the psychological well-being of healthcare workers in disasters, pandemics, and mass casualty events.

OBJECTIVES: This information paper will describe the current research and recommendations for improving healthcare worker's (HCW) mental health. Individual and organizational goals will be outlined with items broken up into the time frames of predisaster, during a disaster, and post-disaster. METHODS: A team of subject matter experts reviewed the current literature utilizing a search of PubMed, Google Scholar, relevant article reference lists, and subject matter interviews. RESULTS: Thirty-six distinct recommendations were identified and distributed into the time frames of predisaster, during a disaster, and post-disaster. Twenty-one of these are pertaining to organizational goals and factors. Fifteen recommendations are identified for individual HCWs. CONCLUSIONS: Additional institutional and government policies supporting the protection of HCW's mental health are required to reduce the stigma and fear, preventing frontline workers from seeking help with the psychological effects of disasters, mass casualty incidents, and pandemics. Further research dealing with ways to ameliorate the negative effects of the stress related to the duties and responsibilities of HCWs, which are exacerbated by disasters, is needed.

A Pilot Study to Assess Urban, Fire-Based Paramedic Accuracy in Identification of Anatomical Landmarks Necessary for Cricothyrotomy and Needle Chest Decompression Using Live Patient Models.

BACKGROUND: Cricothyrotomy and chest needle decompression (NDC) have a high failure and complication rate. This article sought to determine whether paramedics can correctly identify the anatomical landmarks for cricothyrotomy and chest NDC. METHODS: A prospective study using human models was performed. Paramedics were partnered and requested to identify the location for cricothyrotomy and chest NDC (both mid-clavicular and anterior axillary sites) on each other. A board-certified or board-eligible emergency medicine physician timed the process and confirmed location accuracy. All data were collected de-identified. Descriptive analysis was performed on continuous data; chi-square was used for categorical data. RESULTS: A total of 69 participants were recruited, with one excluded for incomplete data. The paramedics had a range of six to 38 (median 14) years of experience. There were 28 medical training officers (MTOs) and 41 field paramedics. Cricothyroidotomy location was correctly identified in 56 of 68 participants with a time to identification range of 2.0 to 38.2 (median 8.6) seconds. Chest NDC (mid-clavicular) location was correctly identified in 54 of 68 participants with a time to identification range of 3.4 to 25.0 (median 9.5) seconds. Chest NDC (anterior axillary) location was correctly identified in 43 of 68 participants with a time to identification range of 1.9 to 37.9 (median 9.6) seconds. Chi-square (2-tail) showed no difference between MTO and field paramedic in cricothyroidotomy site (P = .62), mid-clavicular chest NDC site (P = .21), or anterior axillary chest NDC site (P = .11). There was no difference in time to identification for any procedure between MTO and field paramedic. CONCLUSION: Both MTOs and field paramedics were quick in identifying correct placement of cricothyroidotomy and chest NDC location sites. While time to identification was clinically acceptable, there was also a significant proportion that did not identify the correct landmarks.

A Comparison of the iGel Versus Cricothyrotomy by Combat Medics Using a Synthetic Cadaver Model: A Randomized, Controlled Pilot study.

Background: Airway obstruction is the second leading cause of potentially preventable death on the battlefield. Prior to 2017, the Committee on Tactical Combat Casualty Care (CoTCCC) recommended the surgical cricothyrotomy as the definitive airway of choice. More recently, the CoTCCC has recommended the iGel™ as the supraglottic airway (SGA) of choice. Data comparing these methods in medics are limited. We compared first-pass placement success among combat medics using a synthetic cadaver model. Methods: We conducted a randomized cross-over study of United States Army combat medics using a synthetic cadaver model. Participants performed a surgical cricothyrotomy using a method of their choosing versus placement of the SGA iGel in random order. The primary outcome was first-pass success. Secondary outcomes included time-to-placement, complications, placement failures, and self-reported participant preferences. Results: Of the 68 medics recruited, 63 had sufficient data for inclusion. Most were noncommissioned officers in rank (54%, E6-E7), with 51% reporting previous deployment experience. There was no significant difference in first-pass success (P = .847) or successful cannulation with regard to the two devices. Time-to-placement was faster with the iGel (21.8 seconds vs. 63.8 seconds). Of the 59 medics who finished the survey, we found that 35 (59%) preferred the iGel and 24 (41%) preferred the cricothyrotomy. Conclusions: In our study of active duty Army combat medics, we found no significant difference with regard to first-pass success or overall successful placement between the iGel and cricothyrotomy. Time-to-placement was significantly lower with the iGel. Participants reported preferring the iGel versus the cricothyrotomy on survey. Further research is needed, as limitations in our study highlighted many shortcomings in airway research involving combat medics.

Diabetic Muscle Infarction.

A 58-year-old male with past medical history of diabetes mellitus presented with pain to the bilateral groin for six weeks. Magnetic resonance imaging of the patient's lower extremities revealed acute myoedema, and he was diagnosed with myositis secondary to diabetic muscle infarction.

The Risk of Cancer from CT Scans and Other Sources of Low-Dose Radiation: A Critical Appraisal of Methodologic Quality.

INTRODUCTION: Concern exists that radiation exposure from computerized tomography (CT) will cause thousands of malignancies. Other experts share the same perspective regarding the risk from additional sources of low-dose ionizing radiation, such as the releases from Three Mile Island (1979; Pennsylvania USA) and Fukushima (2011; Okuma, Fukushima Prefecture, Japan) nuclear power plant disasters. If this premise is false, the fear of cancer leading patients and physicians to avoid CT scans and disaster responders to initiate forced evacuations is unfounded. STUDY OBJECTIVE: This investigation provides a quantitative evaluation of the methodologic quality of studies to determine the evidentiary strength supporting or refuting a causal relationship between low-dose radiation and cancer. It will assess the number of higher quality studies that support or question the role of low-dose radiation in oncogenesis. METHODS: This investigation is a systematic, methodologic review of articles published from 1975-2017 examining cancer risk from external low-dose x-ray and gamma radiation, defined as less than 200 millisievert (mSv). Following the PRISMA guidelines, the authors performed a search of the PubMed, Cochrane, Scopus, and Web of Science databases. Methodologies of selected articles were scored using the Newcastle Ottawa Scale (NOS) and a tool identifying 11 lower quality indicators. Manuscript methodologies were ranked as higher quality if they scored no lower than seven out of nine on the NOS and contained no more than two lower quality indicators. Investigators then characterized articles as supporting or not supporting a causal relationship between low-dose radiation and cancer. RESULTS: Investigators identified 4,382 articles for initial review. A total of 62 articles met all inclusion/exclusion criteria and were evaluated in this study. Quantitative evaluation of the manuscripts' methodologic strengths found 25 studies met higher quality criteria while 37 studies met lower quality criteria. Of the 25 studies with higher quality methods, 21 out of 25 did not support cancer induction by low-dose radiation (P = .0003). CONCLUSIONS: A clear preponderance of articles with higher quality methods found no increased risk of cancer from low-dose radiation. The evidence suggests that exposure to multiple CT scans and other sources of low-dose radiation with a cumulative dose up to 100 mSv (approximately 10 scans), and possibly as high as 200 mSv (approximately 20 scans), does not increase cancer risk.

Risk Factors for Falls among Hospitalized Trauma Patients.

Inpatient falls lead to an injury in 30 per cent of cases and serious injury in 5 per cent. Increasing staffing and implementing fall prevention programs can be expensive and require a significant use of resources. We hypothesized that trauma patients have unique risk factors to sustain a fall while hospitalized. This is a retrospective cohort study from 2005 to 2010 of all trauma patients admitted to an urban Level I trauma center. Patients who fell while hospitalized were compared with patients who did not fall to identify risk factors for sustaining an inpatient fall. There were 16,540 trauma patients admitted during the study period and 128 (0.8%) fell while hospitalized. Independent risk factors for a trauma patient to fall while hospitalized included older age (odds ratio [OR], 1.02 [1.01 to 1.03], P < 0.001), male gender (OR, 1.6 [1.0 to 2.4], P = 0.03), blunt mechanism (OR, 5.1 [1.6 to 16.3], P = 0.006), Glasgow Coma Score at admission (OR, 0.59 [0.35 to 0.97], P = 0.04), intensive care unit admission (OR, 2.3 [1.4 to 3.7], P = 0.001), and need for mechanical ventilation (OR, 2.2 [1.2 to 3.9], P = 0.01). Trauma patients who fell while hospitalized sustained an injury in 17 per cent of cases and a serious injury in 5 per cent. Inpatient falls in hospitalized trauma patients are uncommon. Risk factors include older age, male gender, blunt mechanism, lower Glasgow Coma Score, and the need for intensive care unit admission or mechanical ventilation. Trauma patients with these risk factors may require higher staffing ratios and should be enrolled in a formal fall prevention program.