05); the mean of total pain reduction was greater in the ketamine group during the observation period compared with patients who received morphine ( =0.002). The study findings suggest that the sub-dissociative ketamine efficacy in controlling of the acute pain is not lower than morphine sulfate in patients with isolated limb trauma in ED's. Thus, it can be considered as a safe and effective alternative approach. The study findings suggest that the sub-dissociative ketamine efficacy in controlling of the acute pain is not lower than morphine sulfate in patients with isolated limb trauma in ED's. Thus, it can be considered as a safe and effective alternative approach. To assess the possible factors associated with increasing risk of COVID-19 among EMTs. This study was a case-control study conducted in Tehran, Iran. Case group was consisted of confirmed COVID-19 EMTs based on the results of reverse transcriptase polymerase chain reaction and/or lung computed tomography scan. Healthy EMTs were randomly selected as control group. https://www.selleckchem.com/products/AZD0530.html Patients were asked to fill out a checklist including demographic data, data related to the work situation (such as number of missions and type of mask and cloth) and PPE precautions. Sixty-eight patients and 148 healthy persons took part in this study as case and control group, respectively. Having two EMTs involved directly in taking care of patients ( <0.001) and working with a confirmed case teammate ( <0.001), considering the precautions such as seal check after wearing the mask ( =0.015), covering the hair with a medical hat ( <0.001), not using personal items despite protective clothing ( <0.001), and avoiding contact with the outer surface of clothing while removing ( <0.001) had significant difference in two groups. We found that the type and method of use of PPE were correlated with the increasing risk of COVID-19 in EMTs. Also, we found that when two EMTs were involved directly in taking care of the patients, and those who worked with a confirmed case teammate, more frequently affected. We found that the type and method of use of PPE were correlated with the increasing risk of COVID-19 in EMTs. Also, we found that when two EMTs were involved directly in taking care of the patients, and those who worked with a confirmed case teammate, more frequently affected. To describe the restructuring in-hospital systems of care at a Level -1 trauma center in India and to analyze an injury volume and patterns for future preparedness as well as to establish a specific injuries preventive measures during health emergencies like COVID-19. Data was extracted from a prospectively managed trauma registry at level-1 trauma center in India. We have compared the data in lockdown period with the same day's number from the pre-lockdown period. Patients were categorized according to age, gender, injury cause, injury place, injury severity, and injury outcome to compare the statistical analysis between two periods. Total emergency department (ED) trauma footfall decreased significantly by 73% during lockdown period. The injuries result increased significantly due to blunt forces. There was a significant decrease in the major injury of the patient's percentage. The road traffic injuries (RTIs) in individuals were less than the reported falls number, which increased significantly durine trauma. To analyze the factors associated with mortality in fracture patients with concomitant COVID-19 infection based on the available published data. Keywords such as "fracture" and "COVID or COVID-19" were searched through three major databases includes PubMed, EMBASE, and Google Scholar. Selection criteria were all published reports providing the mortality related information of COVID-19 positive fracture patients. Published papers containing mortality data of COVID-19 positive fracture patients were considered for qualitative review. For meta-analysis, the presenting individual's data were considered to study the different parameters association with mortality. The rate of mean mortality in COVID-19 positive fracture patients was 34%, and 91.7% of patients had hip fractures. Older age and hip fractures had a significant association with higher mortality rates in COVID-19 positive fracture patients. The mortality rates are considerably higher in COVID-19 positive patients with fractures compared to COVID-19 positive patients without fractures and to the COVID-19 negative fracture patients. Early surgical intervention should be preferred in hip fractures among COVID-19 positive patients for general stabilization and improved respiratory function. Older age and hip fractures are the main predictors of mortality in these patients. The mortality rates are considerably higher in COVID-19 positive patients with fractures compared to COVID-19 positive patients without fractures and to the COVID-19 negative fracture patients. Early surgical intervention should be preferred in hip fractures among COVID-19 positive patients for general stabilization and improved respiratory function. Older age and hip fractures are the main predictors of mortality in these patients. COVID-19 has mutation capability, and there are no specific drug therapies that are available to fight or inhibit the proteins of this virus. The present study aims to investigate the binding affinity of the bioactive and synthetic compounds with the main protease (Mpro) enzymes and angiotensin-converting enzyme 2 (ACE 2) by computational approach. PASS prediction, pharmacokinetics, and toxicological properties prediction studies were performed through the Google PASS prediction and Swiss ADME/T website. Besides, molecular docking studies were accomplished by BIOVIA Discovery Studio 2020, UCSF Chimera, and PyRx autodock vina. The docking scores were inferred and the selected compounds showed results varying from -3.2 to -9.8 (kcal/mol). Theaflavin scored the highest docking score to the 5REB, 6VW1, and 1R42 enzymes and showed the binding affinity as -6.3 kcal/mol, -9.8 kcal/mol, and -8.6 kcal/mol, respectively. Again, kaempferol showed the best binding affinity to the 7BQY (-7.1 kcal/mol) and 6Y2FB (-6.6 kcal/mol) enzymes.