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Milica Radanović

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Branislava Ćurčić, Dragana Sokolović, M. Radanović, D. Pavlović, Marija Bjeletić, Djordje Vuković, Dragana Drakul

<p><strong>Introduction. </strong>Test anxiety implies an intense pathological fear in situations of preparing and taking exams which is a significant problem for 15&ndash;70% of medical students. The frequent use of psychoactive substances is recognized as a problem for young people. The aim was to determine the frequency and degree of test anxiety and the association with misuse of psychoactive substances in medical students of the Faculty of Medicine in Foča.<br /><strong>Methods.</strong> The research was conducted according to the principle of a cross-sectional study at the Faculty of Medicine in Foča. Students were offered a custom-made questionnaire containing general and specific questions for test anxiety and use and dependence of psychoactive compounds and social networks. Test anxiety was evaluated by Westside anxiety scale.&nbsp;<br /><strong>Results.</strong> The sample included 145 respondents, 69.7% females and 30.3% males. The results indicate that the degree of test anxiety does not differ in male and female students, but test anxiety is less pronounced in younger students and students with medium academic success. The level of test anxiety was correlated with the rate of psychoactive compound use. Psychoactive substances were used by 50.3% of students, primary for anti-anxiety, than for psychostimulation and for hypnotic effects. The most commonly used classes of psychoactive substances were plant anxiolytics, followed by benzodiazepines, marijuana, alcohol and narcotics/cocaine (18.6%, 12.4%, 12.4%, 8.3%, and 4.8%, respectively).<br /><strong>Conclusion.</strong> A significant number of students reach for anxiolytics and other drugs that can create addiction. Elevated levels of test anxiety are positively correlated with increased consumption of psychoactive compounds. However, the frequency of use of psychoactive compounds surpasses the frequency of altogether moderate, high and extreme test anxiety.</p>

The constant worsening of antimicrobial resistance (AMR) imposes the need for an urgent response. Use of antibiotics (AB), both due to irrational prescribing by doctors and irrational use by patients, is recognized as one of the leading causes of this problem. This study aimed to identify knowledge, attitudes, and practices about AB use and AMR within the general population, stratified by age, gender, and urban/rural areas during the COVID-19 pandemic. This questionnaire-based cross-sectional study was conducted in April 2022 among patients who visited three health centers in the eastern region of Bosnia and Herzegovina. A high frequency of AB use was observed during the COVID-19 pandemic (64.2% of respondents were treated with AB). Age and place of residence have not been shown to be factors associated with AB use practices that pose a risk for AMR. However, female gender (β = 0.063; p = 0.041), better knowledge (β = 0.226; p < 0.001), and positive attitudes (β = 0.170; p < 0.001) about use of AB and towards to AMR proved to be factors associated with better practice by respondents. Women, younger respondents, and respondents from urban areas showed better knowledge, attitudes, and behavior about the use of AB and AMR during the COVID-19 pandemic.

Dragana Drakul, Dragana Sokolović, M. Radanović, Nikolina Dukić, Milica Kunarac, B. Ćurčić, D. Pavlović, R. Marić

OBJECTIVE Patients and medical professionals have a common misconception that cardiovascular diseases (CVD) predominantly affect men, which can lead to less prescribing of cardiovascular drugs to women. This study examined whether there were sex differences in the administration of cardiovascular (CV) drugs in patients admitted to the intensive care unit of the Internal Medicine Clinic of Foča University Hospital (ICFUH). MATERIALS AND METHODS The study comprised 332 patients hospitalized at the ICFUH from January 1st to June 30th, 2019. The following data on leading CVD and risks related to CV drug administration were collected: age, hyperlipidemia (HLD), diabetes mellitus (DM), chronic kidney disease (CKD), liver disease (LD), heart failure (HF), hypertension (HTN), myocardial infarction (MI), and stroke (S). The amount of the CV drugs of interest (statins, antiplatelet drugs, calcium channel blockers, ACE inhibitors, beta blockers, diuretics) administered during hospitalization was expressed as the Defined Daily Dose (DDD)/100 bed-days (BD) for patients of both sexes separately. RESULTS During hospitalization in the intensive care unit of ICFUH, female patients were less likely to be treated with statins than male patients (30.1 vs. 57.5 DDD/100 BD, P<0.05). There was no difference between sexes regarding the use of antihypertensive drugs. Women were less likely to be treated by antiplatelet therapy, more precisely by acetylsalicylic acid (30.4 vs. 36.9 DDD/100 BD, P<0.05). CONCLUSION Our study indicates that there were sex differences in CV drug administration in ICFUH. Presuming that drugs used during hospitalization were at least partially a continuation of the previous therapy prescribed by the family doctor, it is possible that such differences exist in primary care.

W. R. Hiler, S. Trauth, B. Wheeler, A. Jimenez, M. Radanović, Joseph R Milanovich, A. Christian

Ozark hellbenders (Cryptobranchus alleganiensis bishopi) have undergone marked population declines across their entire distribution. A variety of ecological life history research has been conducted to determine the cause(s) of the declines. Historically, hellbender diet studies used stomach content examination methods; however, alternative approaches such as less intrusive stable isotope analyses are now options for researchers. The goals of our study were to conduct stable isotope analysis on live and formalin-preserved museum specimen Ozark hellbender tissues to identify diet composition in the Eleven Point and Spring rivers, Arkansas. Also, we used stable isotope analysis to investigate if Spring River hellbender diets have changed over time. We sampled fish, live hellbenders (non-destructively), and formalin-preserved hellbender tissues from museum collections for stable isotope analysis. We sampled crayfish for assemblage composition and stable isotope analysis. The results of our stable isotope study revealed three main findings: (1) there were no statistically significant differences between hellbender δ13C and δ15N values among sites and hellbender stable C and N isotopes were correlated with body length; (2) traditional δ13C versus δ15N bi-plots and trophic discrimination values did not provide complete discernment in hellbender diets; however, Bayesian MixSIAR models revealed hellbenders to be generalists, and (3) the use of δ13C and δ15N values adjusted historic formalin-fixed and ethanol preserved hellbenders matched well with current crayfish and fish stable isotope values based on Bayesian MixSIAR models. These findings provide important diet information and a possible tool to examine dietary patterns from preserved specimens that may be used for hellbender conservation and management.

Goran Tmusic, M. Rat, B. Bokić, Boris Radak, M. Radanović, G. Anačkov

Given the long and continuous history of human settlements on the territory of Novi Sad, the human impact on the Danube?s coast configuration has been significant. Based on the field research and literature data regarding the Danube?s shoreline, from Cerevic to Cortanovci, a total number of 440 taxa classified into 224 genera and 68 families were registered. According to the number of species, the most abundant families were Asteraceae (51), Poaceae (49), Fabaceae (32) and Brassicaceae (28), while the most abundant genera were Carex (15), Rumex (10) and Euphorbia (8). Chorological analysis showed that 42% of the registered taxa belong to Eurasian floral element, 14% to Central European and 12% to Pontic-Southsiberian floral element, with special attention to alien plants with invasive character that included 24 taxa. The analysis of the life forms showed domination of hemicryptophytes (40%), followed by therophytes (27%) and phanerophytes (11%).

M. Radanović, Joseph R Milanovich, K. Barrett, J. Crawford

ABSTRACT Foraging theory suggests organisms increase their fitness through dietary and energetic choices. In nature, organisms choose to consume balanced optimal diets but as exotic plants invade ecosystems, new foraging options become available. Often these plants have different traits and can negatively affect fitness of foragers by lowering survival or growth due to toxicity. Wetland habitats are highly susceptible to plant invasions which can have negative effects on nutrient cycling. The purpose of this study was to examine whether invasion of purple loosestrife (Lythrum salicaria) alters tadpole foraging preference thus potentially impacting their survivorship and fitness. We designed a common garden experiment and utilized stable isotopic signatures to investigate the contribution of purple loosestrife and native hardwood detritus to larval wood frog (Rana sylvatica) and southern leopard frog (Rana sphenocephala) diets. Tadpoles derived a higher percentage of resources from purple loosestrife compared to native hardwood detritus when presented with both options, despite its high concentration of toxic secondary compounds. It is unknown if tadpoles can detect competing fitness signals that may be associated with higher nutrient and toxicity levels in purple loosestrife. Discovering the presence or absence of such signals will promote a greater understanding of selective foraging in changing environments.

M. Rat, B. Bokić, M. Radanović, Boris Radak, S. Bojčic, G. Anačkov, P. Boža

S. Živanović, G. Anačkov, B. Bokić, M. Radanović, M. Rat, S. Bojčic, R. Igić, P. Boža, D. Marisavljević

Srđan Živanović, Goran Anačkov, Bojana Bokić, Milica Radanović, Milica Rat, Slobodan Bojčić, Ružica Igić, Pal Boža Species Iva xanthifolia is invasive plant species from North America that is naturalized in the area of Europe. Iva most often inhabits a ruderal habitats, abandoned meadows and crops but sometimes grows along roadsides. The aim of this study is better understanding of species I. xanthifolia morphology, especially variability of organs that are responsible for production of biomass and potential allergens, which depend on habitats in urban areas, such as the city of Novi Sad.

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