Detectability of Small Low-Attenuation Lesions With Deep Learning CT Image Reconstruction: A 24-Reader Phantom Study.

BACKGROUND. Iterative reconstruction (IR) techniques are susceptible to contrast-dependent spatial resolution, limiting overall radiation dose reduction potential. Deep learning image reconstruction (DLIR) may mitigate this limitation. OBJECTIVE. The purpose of our study was to evaluate low-contrast detectability performance and radiation-saving potential of a DLIR algorithm in comparison with filtered back projection (FBP) and IR using a human multireader noninferiority study design and task-based observer modeling. METHODS. A dual-phantom construct, consisting of a low-contrast detectability module (21 low-contrast hypoattenuating objects in seven sizes [2.4-10.0 mm] and three contrast levels [-15, -10, -5 HU] embedded within liver-equivalent background) and a phantom, was imaged at five radiation exposures (CTDIvol range, 1.4-14.0 mGy; size-specific dose estimate, 2.5-25.0 mGy; 90%-, 70%-, 50%-, and 30%-reduced radiation levels and full radiation level) using an MDCT scanner. Images were reconstructed using FBP, hybrid IR (ASiR-V), and DLIR (TrueFidelity). Twenty-four readers of varying experience levels evaluated images using a two-alternative forced choice. A task-based observer model (detectability index [d']) was calculated. Reader performance was estimated by calculating the AUC using a noninferiority method. RESULTS. Compared with FBP and IR methods at routine radiation levels, DLIR medium and DLIR high settings showed noninferior performance through a 90% radiation reduction (except DLIR medium setting at 70% reduced level). The IR method was non-inferior to routine radiation FBP only for 30% and 50% radiation reductions. No significant difference in d' was observed between routine radiation FBP and DLIR high setting through a 70% radiation reduction. Reader experience was not correlated with diagnostic accuracy (R2 = 0.005). CONCLUSION. Compared with FBP or IR methods at routine radiation levels, certain DLIR algorithm weightings yielded noninferior low-contrast detectability with radiation reductions of up to 90% as measured by 24 human readers and up to 70% as assessed by a task-based observer model. CLINICAL IMPACT. DLIR has substantial potential to preserve contrast-dependent spatial resolution for the detection of hypoattenuating lesions at decreased radiation levels in a phantom model, addressing a major shortcoming of current IR techniques.

Interprofessional simulation of acute care for nursing and medical students: interprofessional competencies and transfer to the workplace.

BACKGROUND: Teamwork and communication are essential tools for doctors, nurses and other team members in the management of critically ill patients. Early interprofessional education during study, using acute care simulation, may improve teamwork and communication between interprofessional team members on the long run. METHODS: A comparative sequential quantitative-qualitative study was used to understand interprofessional learning outcomes in nursing and medical students after simulation of acute care. Students were assigned to a uni- or interprofessional training. Questionnaires were used to measure short and long term differences in interprofessional collaboration and communication between the intervention and control group for nursing and medical students respectively. Semi-structured focus groups were conducted to gain a better understanding of IPE in acute simulation. RESULTS: One hundred and ninety-one students participated in this study (131 medical, 60 nursing students). No differences were found between the intervention and control group in overall ICCAS scores for both medical and nursing students (p = 0.181 and p = 0.441). There were no differences in ICS scores between the intervention and control group. Focus groups revealed growing competence in interprofessional communication and collaboration for both medical and nursing students. CONCLUSIONS: Interprofessional simulation training did show measurable growth of interprofessional competencies, but so did uniprofessional training. Both medical and nursing students reported increased awareness of perspective and expertise of own and other profession. Furthermore, they reported growing competence in interprofessional communication and collaboration in transfer to their workplace.

Prehospital Active and Passive Warming in Trauma Patients.

OBJECTIVE: Hypothermia is common among trauma patients and can lead to a serious rise in morbidity and mortality. This study was performed to investigate the effect of active and passive warming measures implemented in the prehospital phase on the body temperature of trauma patients. METHODS: In a multicenter, multinational prospective observational design, the effect of active and passive warming measures on the incidence of hypothermia was investigated. Adult trauma patients who were transported by helicopter emergency medical services (HEMS) or ground emergency medical services with an HEMS physician directly from the scene of injury were included. Four HEMS/ground emergency medical services programs from Canada, the United States, and the Netherlands participated. RESULTS: A total of 80 patients (n = 20 per site) were included. Eleven percent had hypothermia on presentation, and the initial evaluation occurred predominantly within 60 minutes after injury. In-line fluid warmers and blankets were the most frequently used active and passive warming measures, respectively. Independent risk factors for a negative change in body temperature were transportation by ground ambulance (odds ratio = 3.20; 95% confidence interval, 1.06-11.49; P = .03) and being wet on initial presentation (odds ratio = 3.64; 95% confidence interval, 0.99-13.36; P = .05). CONCLUSION: For adult patients transported from the scene of injury to a trauma center, active and passive warming measures, most notably the removal of wet clothing, were associated with a favorable outcome, whereas wet patients and ground ambulance transport were associated with an unfavorable outcome with respect to temperature.

Protocol for a mixed-methods and multi-site assessment of the implementation process and outcomes of a new community-based frailty programme.

BACKGROUND: Frailty is increasing in prevalence internationally with population ageing. Frailty can be managed or even reversed through community-based interventions delivered by a multi-disciplinary team of professionals, but to varying degrees of success. However, many of these care models' implementation insights are contextual and may not be applicable in different cultural contexts. The Geriatric Service Hub (GSH) is a novel frailty care model in Singapore that focuses on identifying and managing frailty in the community. It includes key components of frailty care such as comprehensive geriatric assessments, care coordination and the assembly of a multi-disciplinary team. This study aims to gain insights into the factors influencing the development and implementation of the GSH. We also aim to determine the programme's effectiveness through patient-reported health-related outcomes. Finally, we will conduct a healthcare utilisation and cost analysis using a propensity score-matched comparator group. METHODS: We will adopt a mixed-methods approach that includes a qualitative evaluation among key stakeholders and participants in the programme, through in-depth interviews and focus group discussions. The main topics covered include factors that affected the development and implementation of each programme, operations and other contextual factors that influenced implementation outcomes. The quantitative evaluation monitors each programme's care process through quality indicators. It also includes a multiple-time point survey study to compare programme participants' pre- and post- outcomes on patient engagement, healthcare services experiences, health status and quality of life, caregiver burden and societal costs. A retrospective cohort study will compare healthcare and cost utilisation between participants of the programme and a propensity score-matched comparator group. DISCUSSION: The GSH sites share a common goal to increase the accessibility of essential services to frail older adults and provide comprehensive care. This evaluation study will provide invaluable insights into both the process and outcomes of the GSH and inform the design of similar programmes targeting frail older adults. TRIAL REGISTRATION: ClinicalTrials.gov Identifier NCT04866316 . Date of Registration April 26, 2021. Retrospectively registered.

Acceptance of healthy lifestyle nudges in the general population of Singapore.

BACKGROUND: In recent years, behaviourally driven policies such as nudges have been increasingly implemented to steer desired outcomes in public health. This study examines the different nudges and the socio-demographic characteristics and lifestyle behaviours that are associated with public acceptance of lifestyle nudges. METHODS: The study used data from the nationwide Knowledge, Attitudes and Practices study (KAP) on diabetes in Singapore. Three types of nudges arranged in increasing order of intrusiveness were examined: (1) information government campaigns, (2) government mandated information and (3) default rules and choice architecture. Acceptance was assessed based upon how much respondents 'agreed' with related statements describing heathy lifestyle nudges. Multivariable linear regressions were performed with socio-demographics and lifestyle behaviours using scores calculated for each nudge. RESULTS: The percentage of respondents who agreed to all statements related to each nudge were: 75.9% (information government campaigns), 73.0% (government mandated information), and 33.4% (default rules and choice architecture). Respondents of Malay/Others ethnicity (vs. Chinese) were more likely to accept information government campaigns. Respondents who were 18 - 34 years old (vs 65 years and above), female, of Malay/Indian ethnicity (vs Chinese), were sufficiently physically active, and with a healthier diet based on the DASH (Dietary Approach to Stop Hypertension) score were more likely to accept nudges related to government mandated information. Respondents of Malay/Indian ethnicity (vs Chinese), and who had a healthier diet were more likely to accept default rules and choice architecture. CONCLUSION: Individuals prefer less intrusive approaches for promoting healthy lifestyle. Ethnicity and lifestyle behaviours are associated with acceptance of nudges and should be taken into consideration during the formulation and implementation of behaviourally informed health policies.

The quality of pre-announcement communication and the accuracy of estimated arrival time in critically ill patients, a prospective observational study.

BACKGROUND: Efficient communication between (helicopter) emergency medical services ((H)EMS) and healthcare professionals in the emergency department (ED) is essential to facilitate appropriate team mobilization and preparation for critically ill patients. A correct estimated time of arrival (ETA) is crucial for patient safety and time-management since all team members have to be present, but needless waiting must be avoided. The aim of this study is to investigate the quality of the pre-announcement and the accuracy of the ETA. METHODS: A prospective observational study was conducted in potentially critically ill/injured patients transported to the ED of a Level I trauma center by the (H)EMS. Research assistants observed time slots prior to arrival at the ED and during the initial assessment, using a stopwatch and an observation form. Information on the pre-announcement (including mechanisms of injury, vital signs, and the ETA) is also collected. RESULTS: One hundred and ninety-three critically ill/injured patients were included. Information in the pre-announcement was often incomplete; in particular vital signs (86%). Forty percent of the announced critically ill patients were non-critical at arrival in the ED. The observed time of arrival (OTA) for 66% of the patients was later than the provided ETA (median 5:15 min) and 19% of the patients arrived sooner (3:10 min). Team completeness prior to the arrival of the patient was achieved for 66% of the patients. CONCLUSIONS: The quality of the pre-announcement is moderate, sometimes lacking essential information on vital signs. Forty percent of the critically ill patients turned out to be non-critical at the ED. Furthermore, the ETA was regularly inaccurate and team completeness was insufficient. However, none of the above was correlated to the rate of complications, mortality, LOS, ward of admission or discharge location.

Self-assessment of Skills by Surgeons and Anesthesiologists After a Trauma Surgery Masterclass.

BACKGROUND: In the Netherlands, each year a three-day international multidisciplinary trauma masterclass is organized to provide the knowledge and skills needed to care for critically injured trauma patients. This study was designed to longitudinally evaluate the effect of the course on participant's self-assessment of their own ability and confidence to perform general and specific skills. METHODS: Between 2013 and 2016, all participants were invited to complete a questionnaire before and during follow-up. Participants were asked to self-assess their level of confidence to perform general skills (communication, teamwork, leadership) and specific skills. Mean scores were calculated, and mixed models were used to evaluate correlation. RESULTS: We asked 265 participants to participate. Response rate was 64% for the pre-questionnaire, 63% for the post-questionnaire and for 3 months, 1 year and 2 years, respectively, 40%, 30%, 20%. The surgical group showed a statistically significant increase in self-assessed confidence for general skills (3.82-4.20) and specific technical skills (3.01-3.83; p < 0.001). In the anesthetic group, self-assessed confidence increased significantly in general skills (3.72-4.26) and specific technical skills (3.33-4.08; p < 0.001). For both groups statistical significance remained during follow-up. CONCLUSIONS: This study demonstrated a sustained positive effect of a dedicated multidisciplinary trauma training curriculum on participant's self-assessed confidence to perform both general and specific technical skills necessary for the care of injured patients. Given the known association between confidence and competence, these findings provide evidence that dedicated trauma training curricula can provide positive lasting results. LEVEL OF EVIDENCE: This is a basic science paper and therefore does not require a level of evidence.

Unpredictable Injectate Spread of the Erector Spinae Plane Block in Human Cadavers.

We performed bilateral ultrasound-guided erector spinae plane blocks at the second and eighth thoracic vertebrae in 11 fresh frozen cadavers. Methylene blue dye spread variably and extensively deep to the erector spinae muscles fascia with involvement of the spinal rami and paravertebral space in 1 of 11 cadavers when injected at the eighth thoracic vertebra, and in 4 of 11 cadavers at the second thoracic vertebra, with crossover to the contralateral side of the spine. Our study demonstrates that in cadavers, an erector spinae plane block follows the fascial planes with unpredictable spread, which might explain its varying clinical efficacy.

Prepared for Mission? A Survey of Medical Personnel Training Needs Within the International Committee of the Red Cross.

BACKGROUND: Humanitarian organizations such as the International Committee of the Red Cross (ICRC) provide worldwide protection and medical assistance for victims of disaster and conflict. It is important to gain insight into the training needs of the medical professionals who are deployed to these resource scarce areas to optimally prepare them. This is the first study of its kind to assess the self-perceived preparedness, deployment experiences, and learning needs concerning medical readiness for deployment of ICRC medical personnel. METHODS: All enlisted ICRC medical employees were invited to participate in a digital questionnaire conducted during March 2017. The survey contained questions about respondents' personal background, pre-deployment training, deployment experiences, self-perceived preparedness, and the personal impact of deployment. RESULTS: The response rate (consisting of nurses, surgeons, and anesthesiologists) was 54% (153/284). Respondents rated their self-perceived preparedness for adult trauma with a median score of 4.0 on a scale of 1 (very unprepared) to 5 (more than sufficient); and for pediatric trauma with a median score of 3.0. Higher rates of self-perceived preparedness were found in respondents who had previously been deployed with other organizations, or who had attended at least one master class, e.g., the ICRC War Surgery Seminar (p < 0.05). Additional training was requested most frequently for pediatrics (65/150), fracture surgery (46/150), and burns treatment (45/150). CONCLUSION: ICRC medical personnel felt sufficiently prepared for deployment. Key points for future ICRC pre-deployment training are to focus on pediatrics, fracture surgery, and burns treatment, and to ensure greater participation in master classes.

Use of Hemostatic Nasal Plugs in Emergency Medical Services in the Netherlands: A Prospective Study of 33 Cases.

BACKGROUND: Epistaxis is a common medical emergency with possible life-threatening complications. In the prehospital setting, epistaxis can be treated with nasal tampons. HemCon® Nasal Plug is a nasal tampon impregnated with oxidized cellulose, which has hemostatic properties. OBJECTIVE: The objective of this study was to determine the effectiveness and usability of HemCon Nasal Plugs in the treatment of severe epistaxis in the prehospital setting. METHODS: From June 2012 to December 2014, all ambulances of two emergency medical services in the Netherlands were equipped with HemCon Nasal Plugs. The plug was used according to protocol; if conventional treatment failed to control severe epistaxis or if conventional treatment was unlikely to achieve hemostasis. The ambulance personnel filled in an evaluation form after each use. RESULTS: A total of 33 patients were treated with HemCon Nasal Plugs. Twenty-four patients were taking anticoagulants or suffered from a clotting disorder. The cause of epistaxis was idiopathic in the majority of the patients. Inserting HemCon Nasal Plugs resulted in cessation of epistaxis in 25/33 patients and resulted in reduction of epistaxis in 4/33 patients. HemCon Nasal Plugs failed to control epistaxis in 4/33 patients, possible due to an unreachable site of bleeding. CONCLUSION: This study demonstrated that HemCon Nasal Plug is an effective adjunct in the prehospital treatment of severe and uncontrolled epistaxis.

Serum sFlt-1/PlGF ratio has better diagnostic ability in early- compared to late-onset pre-eclampsia.

Background To establish gestational specific cutoffs for the soluble fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF) ratio as a diagnostic tool for pre-eclampsia (PE) in an Asian population. Methods 82 subjects (48 PE patients and 34 controls) were recruited. sFlt-1 and PlGF were analysed on the Roche Cobas e411 analyzer and their ratio was calculated. Diagnostic performance was evaluated using receiver-operating characteristics (ROC) curves. Optimal cutoffs for sFlt-1/PlGF ratio were determined for different gestation phases. Results The most optimal cut-off for the study group is 32 with a sensitivity and specificity of 85.1% and 100% and Youden Index (J) of 0.85. Applying this cutoff for early-onset PE (EO-PE), sensitivity increased to 95.8% while specificity remains at 100% (J=0.96). However, for late onset PE (LO-PE), sensitivity decreases to 73.9% while specificity remains at 100% (J=0.74). Two cutoffs were further determined for EO-PE and LO-PE - the first focusing on high sensitivity; the second focusing on high specificity. For EO-PE, cutoff <17 yielded sensitivity of 100% and specificity of 94.4% (J=0.94) while cutoff ≥32 yielded sensitivity of 95.8% and specificity of 100% (J=0.95). For LO-PE, cutoff <22 has a sensitivity of 82.6% and a specificity of 91.7% (J=0.74) while cutoff ≥32 yielded sensitivity of 73.9% and specificity of 100% (J=0.74). Conclusion While our study found an overall cutoff at 32 regardless of gestation age, it has limited diagnostic accuracy for LO-PE in our study. Multiple cutoffs focusing on either high sensitivity or high specificity enhance the performance of the sFlt-1/PlGF ratio as a diagnostic tool for PE and contribute to the identification of women at risk of PE in our Asian region.

Gestational age-specific reference intervals for serum thyroid hormone levels in a multi-ethnic population.

BACKGROUND: Thyroid disorders are common during pregnancy. To date, a limited number of studies have reported differences in serum thyroid hormone concentrations between different ethnic groups. We sought to establish gestational age-specific reference intervals for serum levels of thyroid hormones in a multi-ethnic population and investigate whether separate reference intervals should be used for different ethnic groups. METHODS: A total of 926 pregnant women from multiple ethnic groups attended four separate study visits spanning the three trimesters. Venous blood samples were taken at 9 to 14 weeks, 18 to 22 weeks, 28 to 32 weeks, and 34 to 39 weeks of gestation. Serum concentrations of thyroid-stimulating hormone (TSH), free thyroxine (T4), free triiodothyronine (T3), total T4, total T3, thyroid peroxidase antibody and thyroglobulin antibody were measured using Abbott Architect immunoassays. A total of 562 women with singleton pregnancies were found to be negative for both thyroid autoantibodies at all four study visits and thus included in the reference sample group for the establishment of reference intervals (2.5th to 97.5th percentiles). RESULTS: Reference intervals for serum thyroid hormones at 9-14 weeks of gestation derived from the combined group of pregnant women are as follows: TSH, 0.01-2.39 mIU/L; free T4, 11.4-19.5 pmol/L; free T3, 4.23-6.69 pmol/L; total T4, 77.8-182.4 nmol/L; total T3, 1.39-2.97 nmol/L. No differences in the five thyroid parameters' reference intervals are detectable among the ethnic groups except that at study visit 3 (28-32 weeks of gestation), the upper reference limit of total T3 in Malays (3.20 nmol/L; 90% CI, 2.99-3.76 nmol/L) is slightly higher than that in Chinese (2.86 nmol/L; 90% CI, 2.70-2.98 nmol/L). CONCLUSIONS: The findings from this study on a multi-ethnic cohort highlight the importance of establishing locally derived and gestational age-specific reference intervals for the five thyroid hormone parameters.

Malunion of Long-Bone Fractures in a Conflict Zone in the Democratic Republic of Congo.

INTRODUCTION: Malunion is a well-recognized complication of long-bone fractures which accounts for more than 25% of injuries in conflict zones. The aim of this study was to investigate the rate of malunion sustained by casualties with penetrating gunshot wounds in an International Committee of the Red Cross (ICRC) surgical substitution project in the Democratic Republic of Congo (DRC) and compare these results with current literature. METHODS: A retrospective cohort study was performed. All patients admitted to the ICRC facility between the periods of 01.10.2014 and 31.12.2015 with long-bone fractures caused by gunshot wound were included, and data were collected retrospectively from the patient's hospital notes. RESULTS: A total of 191 fractures caused by gunshot were treated in the DRC at the ICRC surgical substitution project during the study period. On average, the fractures were 3 days old on admission and were all open, with 62% also being comminuted. The ICRC management protocol, which emphasizes debridement, antibiotic prophylaxis and conservative fracture stabilization, was followed in all cases. Forty-eight percentage of the fractures were finally classified as 'union without complication'; however, 17% were classified as 'malunion'. CONCLUSIONS: This study indicates that open long-bone fractures that are managed by the ICRC surgical substitution project in DRC may have an increased likelihood of malunion as compared to long-bone fractures treated in developed countries. Patient delay and mechanism of injury may have caused increased rates of infection which are likely behind these increased rates of malunion, alongside the lack of definitive fracture treatment options made available to the surgical team.

Pediatric Surgical Care in a Dutch Military Hospital in Afghanistan.

BACKGROUND: From August 2006-August 2010, as part of the ISAF mission, the Armed Forces of the Netherlands deployed a role 2 enhanced Medical Treatment Facility (R2E-MTF) to Uruzgan province, Afghanistan. Although from the principle doctrine not considered a primary task, care was delivered to civilians, including many children. Humanitarian aid accounted for a substantial part of the workload, necessitating medical, infrastructural, and logistical adaptations. Particularly pediatric care demanded specific expertise and equipment. In our pre-deployment preparations this aspect had been undervalued. Because these experiences could be influential in future mission planning, we analyzed our data and compared them with international reports. METHODS: This is a retrospective, descriptive study. Using the hospital's electronic database, all pediatric cases, defined as patients <17 years of age, who were admitted between August 2006 and August 2010 to the Dutch R2E-MTF at Multinational Base Tarin Kowt (MBTK), Urzugan, Afghanistan were analyzed. RESULTS: Of the 2736 admissions, 415 (15.2 %) were pediatric. The majority (80.9 %, 336/415) of these admissions were for surgical, often trauma-related, pathology and required 610 surgical procedures, being 26 % of all procedures. Mean length of stay was 3.1 days. The male to female ratio was 70:30. Girls were significantly younger of age than boys. In-hospital mortality was 5.3 %. CONCLUSION: Pediatric patients made up a considerable part of the workload at the Dutch R2E-MTF in Uruzgan, Afghanistan. This is in line with other reports from the recent conflicts in Iraq and Afghanistan, but used definitions in reported series are inconsistent, making comparisons difficult. Our findings stress the need for a comprehensive, prospective, and coalition-wide patient registry with uniformly applied criteria. Civilian disaster and military operational planners should incorporate reported patient statistics in manning documents, future courses, training manuals, logistic planning, and doctrines, because pediatric care is a reality that cannot be ignored.

Solution structure of the PAS domain of a thermophilic YybT protein homolog reveals a potential ligand-binding site.

The Bacillus subtilis protein YybT (or GdpP) and its homologs were recently established as stress signaling proteins that exert their biological effect by degrading the bacterial messenger cyclic di-AMP. YybT homologs contain a small Per-ARNT-Sim (PAS) domain (~80 amino acids) that can bind b-type heme with 1:1 stoichiometry despite the small size of the domain and the lack of a conserved heme iron-coordinating residue. We determined the solution structure of the PAS domain of GtYybT from Geobacillus thermodenitrificans by NMR spectroscopy to further probe its function. The solution structure confirms that PASGtYybT adopts the characteristic PAS fold composed of a five-stranded antiparallel ß sheet and a few short α-helices. One α-helix and three central ß-strands of PASGtYybT are noticeably shorter than those of the typical PAS domains. Despite the small size of the protein domain, a hydrophobic pocket is formed by the side chains of nonpolar residues stemming from the ß-strands and α-helices. A set of residues in the vicinity of the pocket and in the C-terminal region at the dimeric interface exhibits perturbed NMR parameters in the presence of heme or zinc protoporphyrin. Together, the results unveil a compact PAS domain with a potential ligand-binding pocket and reinforce the view that the PASYybT domains function as regulatory domains in the modulation of cellular cyclic di-AMP concentration.

Incidence and epidemiology of casualties treated at the Dutch role 2 enhanced medical treatment facility at multi national base Tarin Kowt, Afghanistan in the period 2006-2010.

BACKGROUND: To improve care for the injured service member, we have analyzed battle casualty patterns and mechanisms. This study is the first documented report of wounding patterns and mechanisms of battle casualties treated at the Dutch role 2 enhanced medical treatment facility at the multi-national base Tarin Kowt, Uruzgan, Afghanistan. METHODS: Participants were selected from the trauma registry at the Dutch role 2 enhanced medical treatment facility if they fitted the criteria 'battle casualty' and 'disease non-battle injury' between August 2006 and August 2010. RESULTS: The trauma registry query resulted in 2,736 casualties, of which 60 % (N = 1,635) were classified as 'disease non-battle casualties' and 40 % (N = 1,101) as 'battle casualties'. The battle casualties sustained 1,617 combat wounds, resulting in 1.6 wounds per battle casualty. These injuries were predominately caused by explosions (55 %) and gunshots (35 %). The wounding pattern was as follows: head and neck (21 %), thorax (13 %), abdomen (14 %), upper extremity (20 %), and lower extremity (33 %). CONCLUSIONS: The wounding patterns seen at the Dutch role 2 enhanced medical treatment facility at the multi-national base Tarin Kowt resemble the patterns as recorded by other coalition partners. The wounding patterns differ with previous conflicts: a greater proportion of head and neck wounds, and a lower proportion of truncal wounds.

The ground is the limit: epidemiology of skydiving accidents over 25 years and in 2.1 million jumps in the Netherlands with sub-analysis of injuries reported by medical professionals in the past five years.

BACKGROUND: Skydiving is the fastest nonmotorized sport; and consequently is not without risk. In the last decades, skydiving has become considerably safer but injuries and fatalities still occur. Incidents are reported to and administered by the Royal Netherlands Aeronautical Association (KNVvL). From 1995 to 2020, 2715 incidents were reported; of which 1503 resulted in injury and 26 in fatality. There is a need for more information available on the particular type, severity, and factors which contribute to skydiving-related injuries worldwide. This study aims to investigate patterns in occurrence rates, examine demographic and skydiving-related factors linked to injuries, and analyze the types and severity of injuries relating to these contributing factors. METHODS: The Dutch KNVvL database - covering more than 25 years of data - was examined for contributing factors. An analysis of the severity and types of injury resulting from incidents over the last five years were matched with a search of hospital databases. RESULTS: The rate of injuries pattern increases starting from 2016, with novice jumpers having the highest risk of injury. Most injuries occur during the landing phase. The lower extremities and the spine are most affected, with fractures being the most prevalent type of injury. More than half of the patients were admitted to hospital, with 10% requiring surgery, resulting in months of rehabilitation. CONCLUSION: This study is the first in the Netherlands, and only the second worldwide to analyze technical incident databases in combination with data from medical information systems. Skydiving accidents of experienced jumpers should be considered as 'high-energy trauma,' therefore treatment should follow standard trauma guidelines. In less experienced skydivers, it is critical to conduct a secondary survey to assess the extremities adequately. Clinicians should also pay attention to friction burns that can arise due to friction between the skin and skydive equipment, a phenomenom that is already known in road traffic accidents.

Impact of accidental hypothermia in trauma patients: A retrospective cohort study.

BACKGROUND: Trauma patients with hypothermia have substantial increases in mortality and morbidity. In severely injured patients, hypothermia is common with a rate up to 50% in various geographic areas. This study aims to elucidate the incidence, predictors, and impact of hypothermia on outcomes in severely injured patients. METHODS: This was a retrospective cohort study which included trauma patients with an Injury Severity Score (ISS) ≥ 16 admitted to a level 1 trauma center in the Netherlands between January 1, 2015 and December 31, 2021. Primary outcome was incidence of hypothermia on arrival at the emergency department. Factors associated with hypothermia were identified. Secondary outcomes were transfusion requirement, mortality, and intensive care unit (ICU) admission. Logistic regression analysis was used to identify associations. RESULTS: A total of 2032 severely injured patients were included of which 257 (12.6%) were hypothermic on hospital arrival. Predictors for hypothermia on hospital arrival included higher ISS, prehospital intubation, cervical spine immobilization, winter months, systolic blood pressure (SBP) < 90 mmHg and Glasgow Coma Scale (GCS) ≤ 8. Hypothermia was independently associated with transfusion requirement (OR, 2.68; 95% CI, 1.94 - 3.73; p < 0.001), mortality (OR, 2.12; 95% CI, 1.40 - 3.19; p < 0.001) and more often ICU admission (OR, 1.81; 95% CI, 1.10 - 2.97, p = 0.019). CONCLUSIONS: In this study, hypothermia was present in 12.6% of severely injured patients. Hypothermia was associated with increased transfusion requirement, mortality, and ICU admission. Identified predictors for hypothermia included the severity of injury, intubation, and immobilization, as well as winter season, SBP < 90 mmHg, and GCS ≤ 8.

European military surgical teams in combat theater: A survey study on deployment preparation and experience.

INTRODUCTION: Adequate (predeployment) training of the nowadays highly specialized Western military surgical teams is vital to ensure a broad range of surgical skills to treat combat casualties. This survey study aimed to assess the self-perceived preparedness, training needs, deployment experience, and post-deployment impact of surgical teams deployed with the Danish, Dutch, or Finnish Armed Forces. Study findings may facilitate a customized predeployment training. METHODS: A questionnaire was distributed among Danish, Dutch, and Finnish military surgical teams deployed between January 2013 and December 2020 (N = 142). The primary endpoint of self-perceived preparedness ratings, and data on the training needs, deployment experiences, and post-deployment impacts were compared between professions and nations. RESULTS: The respondents comprised 35 surgeons, 25 anesthesiologists, and 39 supporting staff members, with a response rate of 69.7 % (99/142). Self-perceived deployment preparedness was rated with a median of 4.0 (IQR 4.0-4.0; scale: 1 [very unprepared]-5 [more than sufficient]). No differences were found among professions and nations. Skills that surgeons rated below average (median <6.0; scale: 1 [low]-10 [high]) included tropical disease management and maxillofacial, neurological, gynecological, ophthalmic, and nerve repair surgery. The deployment caseload was most often reported as <1 case per week (41/99, 41.4 %). The need for professional psychological help was rated at a median of 1.0 (IQR 1.0-1.0; scale: 1 [not at all]-5 [very much]). CONCLUSIONS: Military surgical teams report overall adequate preparedness for deployment. Challenges remain for establishing broadly skilled teams because of a low deployment caseload and ongoing primary specializations. Additional training and exposure were indicated for several specialism-specific skill areas. The need for specific training should be addressed through customized predeployment programs.

Inhalable point-of-care urinary diagnostic platform.

Although low-dose computed tomography screening improves lung cancer survival in at-risk groups, inequality remains in lung cancer diagnosis due to limited access to and high costs of medical imaging infrastructure. We designed a needleless and imaging-free platform, termed PATROL (point-of-care aerosolizable nanosensors with tumor-responsive oligonucleotide barcodes), to reduce resource disparities for early detection of lung cancer. PATROL formulates a set of DNA-barcoded, activity-based nanosensors (ABNs) into an inhalable format. Lung cancer-associated proteases selectively cleave the ABNs, releasing synthetic DNA reporters that are eventually excreted via the urine. The urinary signatures of barcoded nanosensors are quantified within 20 min at room temperature using a multiplexable paper-based lateral flow assay. PATROL detects early-stage tumors in an autochthonous lung adenocarcinoma mouse model with high sensitivity and specificity. Tailoring the library of ABNs may enable not only the modular PATROL platform to lower the resource threshold for lung cancer early detection tools but also the rapid detection of chronic pulmonary disorders and infections.