Purpose:This study describes the transformation of a rural trauma center in the Upper Mountain West, which expanded from 280 to 305 beds between 2011 and 2022, and from an American College of Surgeons (ACS) verified Level II to Level I facility, serving a four-state region. Patients and Methods:A retrospective analysis of all 8947 trauma activations from 2011-2022 was conducted using the institution's trauma registry. A structured gap analysis assessed alignment with ACS Level I principles. Results:The gap analysis identified four priority areas for growth and development of our trauma program to become an ACS Level I Trauma Center: patient volumes, absence of a Surgical Intensive Care Unit (SICU), lack of a surgical residency program, and limited trauma research infrastructure. Targeted interventions led to the establishment of a dedicated SICU, initiation of PGY-4 surgical rotations, and the development of trauma-focused research capacity. By 2023, the number of severely injured patients (Injury Severity Score (ISS) ≥16) exceeded ACS thresholds despite total admissions remaining below 1200. Between 2011 and 2022, 8947 trauma patients were treated. Mean patient age increased from 42.6 to 51.8 years (p <0.0001), with geriatric cases rising from 19.8% to 37.1% and female patients from 33.3% to 41.2%. Overall injury severity decreased (mean ISS 10.4 to 9.7; p <0.0001), but ICU patient acuity rose (ISS 15.9 to 17.9; p <0.0001). Mortality remained stable (3.3-4.0%). ICU admissions declined from 33.1% to 22.6%, while length of stay and patient acuity increased (49.6% and 4.7%, respectively). Interfacility transfer rates decreased from 2.8% to 1.1% (p=0.0372), reflecting improved system capacity. Conclusion:Strategic investments in infrastructure, workforce development, education, and research enabled this rural trauma center to achieve Level I criteria while adapting to changing patient demographics and clinical demands. These implementation strategies may inform similar resource-constrained rural trauma systems pursuing ACS Level I verification.

This paper presents an analytical risk assessment of heavy metals (HMs) in twenty-three rivers and two typical lakes across five different provinces of Nepal. The study examines their effects on humans of varying age groups and ecological systems using different indexes such as Hazard Index (HI), Cancer Index (CI), and Hazard Quotient (HQ). The human health risk assessment reveals that female children are the most vulnerable to heavy metal risks, followed by male children, female adults, and male adults. Notably, Co, Pb, Cd, As, Cr, and Cu present substantially high non-carcinogenic health risks for all adults and children with HI values ranging from 1 to more than 100. However, this risk is confined to only children (both male and female) for the metals Mn and Ni. HMs such as Cr, Ni, As, Cd, and Pb have a very high carcinogenic risk in some rivers for all adults and children (CI > 1.00E-3). Concerning ecological risk, the HQ values are found to be significantly above the permissible limit with the order Cu > Cd > Pb > Fe > Zn > Co > Ni > Mn. Furthermore, the integration of various treatment technologies would enhance effectiveness in eliminating HMs from polluted river water, ensuring that the water becomes suitable for irrigation and other purposes. The heavy metals identified as priority controlling factors with potential remediation technologies can provide valuable insights for policymakers in making informed decisions concerning the safety of human health and the ecological system.

Time to definitive surgical debridement has been recognized as a predictor for morbidity and mortality in necrotizing soft-tissue infections (NSTI). Rural patients are at particular risk due to limited local resources, decreased access to care, and prolonged transport times. The aim of the current study was to examine the outcomes of NSTI requiring surgical treatment in a previously non-described setting. This retrospective study (2010-2020) from a single tertiary care center in Montana reviewed patients ≥18 years old with a NSTI via ICD9/10 codes. Rural-Urban Continuum Codes (RUCC; characterizing counties by population size) were used to distinguish urban versus rural counties. Race (White and American Indian/Alaskan Native (AI/AN)) was self-described. Qualitative and quantitative comparisons between groups were determined using the appropriate two-tailed statistical tests. An aggregate of 177 patients was identified. Mean age in AI/AN was significantly lower (P<0.0001) compared to White patients with no preexisting condition delineation. NSTI demonstrated an elevated incidence in both rural areas and AI/AN patients. Diabetes was also significantly higher (P=0.0073) in rural versus urban patients. Both rural and AI/AN patients faced extended travel distance for treatment. AI/AN patients had a significantly different infection location than White. Furthermore, polymicrobial species were significantly more prevalent in AI/AN patients. Morbidities (defined as septic shock and/or amputation) were significantly higher in AI/AN patients and rural environments (P<0.01). There was no significant difference in all-cause mortality between respective groups. The state of Montana presents unique challenges to optimizing NSTI treatment due to excessive distances to regional tertiary care facilities. This delay in treatment can lead to increased morbidity.

The paper is devoted to study the generalized fractional calculus of arbitrary complex order for the H - function defined by Inayat Hussain [8].The classical fractional integrals and derivatives of Riemann-Liouville type are treated.The considered generalized fractional integration and differentiation operators contain the Gauss Hypergeometric function as a kernel and generalize classical Riemann-Liouville, Erdelyi-Kober types ones.It is proved that the generalized fractional integrals and derivatives of H - function turn also out H -functions but of greater order.Especially, the obtained results define more precise and general ones than known.Corresponding assertion for Riemann-Liouville and Erdelyi-Kober fractional integral operators are also presented.

ZnO and CdO pellets with and without Mn doping were prepared by using Hydraulic pressure machine at room temperature. The effect of Mn content (1,3,5 wt % ) on the electrical properties have been carried out by Keithley meter. The result shows that the resistivity decreases as increasing Mn content. Impedance analyzer are used for dielectric behavior and results shows that decrement of dielectric constant as well as dielectric loss with the increment of frequency.

BACKGROUND Burn injuries can induce distinct, systemic inflammatory and immunological responses which occur acutely up to 72 hrs or chronically after 24 hrs. Previously published literature showed a dramatic increase in whole blood histamine values within 24 hrs of a thermal injury. However, the data is limited due to infrequent monitoring, resulting in statistically insignificant findings. The goal of this study was to determine localized histamine fluctuations for 6 consecutive days in a successive group of patients admitted immediately after a burn. METHOD Using blood plasma from 7 patients (average total burn surface area 24.7%), we examined histamine within an average 4.1 (± 0.3) hrs from burn injury, by means of a monoclonal-based competitive binding enzyme immunoassay. Histamine values were normalized to patient baselines prior to determining overall averages. Patient vitals and electrolyte values were extracted from the electronic health record. A two-tailed student t-test was used to compare values with p-value ≤ 0.05 considered statistically significant using statistical software R. RESULTS The histamine values were significantly higher than patient baseline values up to 48 hrs (p-value ≤ 0.05), followed by a return to baseline values from approximately 3 days post-injury. Heart rates were within normal values up until 72 hrs. Hematocrit and hemoglobin began within normal values, dropped at 72 hrs, and reduced significantly from 96 hrs post-injury. The electrolyte calcium began within the normal range, and then was significantly less than the baseline value from 96 hrs post-injury. CONCLUSIONS We have shown a distinct and significant increase in histamine plasma levels within 48 hrs after a moderate burn injury.

A cost-effective alternative approach capable of determining the prevalence of substance use in communities can complement the existing efforts of combating drug abuse and addiction. In this study, the prevalence of 10 illicit and 19 prescribed psychoactive drugs of potential abuse was determined utilizing wastewater-based epidemiology, and compared in two adjoined urban communities and a rural community. This is the first application of the Monte Carlo simulation method to account multiple uncertainties and propagation of errors associated with the individual parameter of wastewater based epidemiological estimations in the U.S. A significantly higher prevalence of cocaine [3830 (mean difference, MD: 2960) mg/d/1000 people] was found in the central business district while the per-capita consumption rates of amphetamine [738 (MD: 338) mg/d/1000 people] and methamphetamine [1660 (MD: 629) mg/d/1000 people] were higher in a rural community. Among narcotics, the per-capita consumption rate of fentanyl and morphine was significantly higher in urban communities while codeine, hydrocodone, hydromorphone, and buprenorphine were dominant in a rural community. The significantly higher prevalence of buprenorphine (˜20-30 folds), oxycodone (˜2-3 folds), and alprazolam (˜2-3 folds) determined in these communities compared to the conventional estimates based on the electronically reported prescriptions and drug-related inpatient hospitalizations suggest the abuse of these drugs.

Aim: The current study investigated the positive and negative psychological adaptations that are a result of secondary traumatic stress, and the role of resilience among paramedics and emergency medical technicians (EMTs). Methods: Emergency medical service (EMS) providers anonymously completed four validated questionnaires on: secondary traumatic stress, post-traumatic growth, resilience, and changes in outlook. Relationships between these constructs and demographics were explored. Findings: Overall, EMS participants reported a higher-than-average positive change in outlook. Resilience (p<0.001) was significantly inversely related to secondary traumatic stress and negative change in outlook. EMS working part-time demonstrated a significantly higher level of resilience (p=0.005) compared with full-time. Post-traumatic growth was significantly higher (p=0.03) in EMTs compared with paramedics. No significant differences (p>0.05) were detected between years of experience for any attributes analysed. Conclusion: Findings demonstrated significant correlations between secondary traumatic stress, resilience, post-traumatic growth, and changes in outlook in EMTs and paramedics.

BACKGROUND:Since 2010, the use of Tranexamic Acid (TXA) in trauma has been brought to the forefront of severe hemorrhage treatment. However, the mixed literature illustrates the need for additional proof of efficacy and determining which patients may benefit from TXA. The purpose of this retrospective study was to evaluate a more stringent TXA inclusion criterion (heart rate ≥ 120 beats per minute (BPM) with a systolic blood pressure (SBP) ≤ 90 mmHg) as compared to the standard CRASH-2 inclusion criteria. METHODS:From 2013-2016 a total of 115 patients (control, n = 62; TXA, n = 53) were included in the analysis. These patients adhered to the standard CRASH-2 and more stringent inclusion criteria; they also survived at least 8.5 hrs (minimum amount of time required for full TXA dose) from the initiation. Basic characteristics of the patients were summarized. The mortality rates between TXA and control groups were compared using two proportion z-tests. All p values <0.05 were considered statistically significant. RESULTS:There was no statistical significant difference in patient characteristics between the two treatment groups, making them more comparable (p value >0.05). This study found a significant reduction of percent mortality at the 24 hr time point against the control (p = 0.007). Additionally, utilizing the more strict inclusion criteria (BPM ≥ 120 and SBP ≤ 90) substantially extended time to stabilize patients to 48 hrs (p = 0.029). CONCLUSION:By imposing the more strict criteria, TXA appears to be a better treatment option in reducing mortality rates and potentially extends the treatment time-frame for stabilizing the patient up to 48 hours.

Purpose: Recent evidence suggests that increasing perimetric contrast all the way to 0 dB may not be clinically useful. This study examines whether raising the floor for point-wise sensitivities affects the ability of global indices to detect change.Methods: Longitudinal data from eyes with progressive glaucoma were used. Point-wise sensitivities were censored at various cutoffs (12-19 dB). At each cutoff, mean deviations (MD) were recalculated using censored sensitivities, called censored mean deviation (CMD). Both MD and CMD were fitted using a linear model. MD and CMD rate of changes (signal) and the standard deviations (SD) of the residuals (noise) were obtained from the fitted models. The linear signal to noise ratio (LSNR) for MD (LSNRMD) and CMD (LSNRCMD) were compared. Additionally, at each cutoff, the ratios of LSNRCMD to LSNRMD were calculated and tested.Results: CMD provided significantly (P < 0.05) better LSNR than MD when using any point-wise sensitivity cutoff between 15-19 dB for progressing eyes. Moreover, the ratios of LSNRCMD to LSNRMD were significantly (P < 0.05) greater than 1 at all cutoffs from 15-19 dB.Conclusion: This study demonstrates that censoring is an effective tool to reduce variability at low sensitivities for progressing eyes.Translational Relevance: This study suggests that 15-19 dB could be a more suitable endpoint for perimetric testing algorithms.

PURPOSEWe have shown previously that a nonlinear exponential model fits longitudinal series of mean deviation (MD) better than a linear model. This study extends that work to investigate the mode (linear versus nonlinear) of change for pointwise sensitivities.METHODSData from 475 eyes of 244 clinically managed participants were analyzed. Sensitivity estimates at each test location were fitted using two-level linear and nonlinear mixed effects models. Sensitivity on the last test date was forecast using a model fit from the earlier test dates in the series. The means of the absolute prediction errors were compared to assess accuracy, and the root means square (RMS) of the prediction errors were compared to assess precision.RESULTSOverall, the exponential model provided a significantly better fit (P < 0.05) to the data at the majority of test locations (69%). The exponential model fitted the data significantly better at 85% of locations in the upper hemifield and 58% of locations in the lower hemifield. The rate of visual field (VF) deterioration in the upper hemifield was more rapid (mean, -0.21 dB/y; range, -0.28 to -0.13) than in the lower hemifield (mean, -0.14 dB/y; range, -0.2 to -0.09).CONCLUSIONSAn exponential model may more accurately track pointwise VF change, at locations damaged by glaucoma. This was more noticeable in the upper hemifield where the VF changed more rapidly. However, linear and exponential models were similar in their ability to forecast future VF status.TRANSLATIONAL RELEVANCEThe VF progression appears to accelerate in early glaucoma patients.

Objective: The purpose of this study is to report our experience with an exclusive human milk–based diet (EHM) versus diets of mother’s milk supplemented with banked human milk (DHM) or formula (PTF) plus bovine fortifier. Second, we evaluated the cost-effectiveness of using EHM. Design/Methods: This is a retrospective study of infants ≤1500 g birth weight (VLBW) admitted to the NICU from January 1, 2007, to December 31, 2011. Primary outcomes were rates of Bell stage 2 to 3 necrotizing enterocolitis (NEC) and NEC plus significant gastrointestinal bleeding (GIB). There were 3 groups for analysis according to diet: PTF, DHM, and EHM. Binary outcomes were analyzed using a multivariate logistic regression. Linear analysis of covariance was used to analyze continuous outcomes. Cost analysis used costs from a previous study for stage 2 and 3 NEC and from a matched control analysis for infants in our study for stage 1 NEC. Results: Infants who received EHM (n = 44) had higher rates of risk factors for NEC compared with DHM (n = 224) and PTF (n = 93). Rates of NEC were decreased for EHM versus PTF (odds ratio [OR] = 0.060; confidence interval [CI] = 0.003-0.445; P = .019) and NEC plus GIB were decreased for EHM versus DHM (OR = 0.070; CI = 0.004-0.369; P = .012) and EHM versus PTF (OR = 0.062; CI = 0.003-0.366; P = .011). A cost saving was shown when using EHM for VLBW infants with several risk factors for NEC but not all VLBW infants. Conclusions: EHM lowered the incidence of NEC compared with PTF and NEC plus GIB compared with DHM and PTF. Using EHM in VLBW infants at higher risk of NEC appears to be cost-effective.

PURPOSE:Ordinary least squares linear regression (OLSLR) analyses are inappropriate for performing trend analysis on repeatedly measured longitudinal data. This study examines multilevel linear mixed-effects (LME) and nonlinear mixed-effects (NLME) methods to model longitudinally collected perimetry data and determines whether NLME methods provide significant improvements over LME methods and OLSLR.METHODS:Models of LME and NLME (exponential, whereby the rate of change in sensitivity worsens over time) were examined with two levels of nesting (subject and eye within subject) to predict the mean deviation. Models were compared using analysis of variance or Akaike's information criterion and Bayesian information criterion, as appropriate.RESULTS:Nonlinear (exponential) models provided significantly better fits than linear models (P < 0.0001). Nonlinear fits markedly improved the validity of the model, as evidenced by the lack of significant autocorrelation, residuals that are closer to being normally distributed, and improved homogeneity. From the fitted exponential model, the rate of glaucomatous progression for an average subject of age 70 years was -0.07 decibels (dB) per year. Ten years later, the same eye would be deteriorating at -0.12 dB/y.CONCLUSIONS:Multilevel mixed-effects models provide better fits to the test data than OLSLR by accounting for group effects and/or within-group correlation. However, the fitted LME model poorly tracks visual field (VF) change over time. An exponential model provides a significant improvement over linear models and more accurately tracks VF change over time in this cohort.