Aleksandar Višnjić

Dr. Aleksandar Višnjić

Department of Social Medicine and Public Health, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
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Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Aleksandar VišnjićAleksandar Višnjić
Aleksandar Višnjić
VVVladica Veličković
Vladica Veličković
DSDušan Sokolović
Dušan Sokolović
MSMiodrag Stanković
Miodrag Stanković
KKristijan Mijatovic
Kristijan Mijatovic
OROlivera Radulović
Olivera Radulović
Objectives: There is insufficient evidence regarding the potential risk of mobile phone use on mental health. Therefore, the aim of this research was to examine the relationship between mobile phone use and mental health by measuring the levels of depression, anxiety, and stress among university students in Serbia and Italy. Methods: This cross-sectional study was carried out at two distinguished universities in Serbia and Italy from March to May of the 2015/2016 academic year and included 785 students of both genders. The questionnaire was compiled and developed from different published sources regarding the manner and intensity of mobile phone use, along with the Depression Anxiety Stress Scale (DASS 42) for measuring psychological health. The statistical analysis of the data included the application of binary logistic regression and correlation tests. Results: Statistical analysis indicates that anxiety symptoms are somewhat more present in younger students (odds ratio (OR) = 0.86, 95% confidence interval (CI): 0.76–0.96), in those who send more text messages SMSs (OR = 1.15, 95% CI: 1.11–1.31), and in those who browse the internet less frequently (OR = 0.84, 95% CI: 0.73–0.95). Stress is more common in students who make fewer calls a day (OR = 0.79, 95% CI: 0.64–0.97), as well in those who spend more time talking on the mobile phone per day (OR = 1.28, 95% CI: 1.12–1.56). The strongest predictor of high stress levels was keeping the mobile phone less than 1 m away during sleeping (OR = 1.48, 95% CI: 1.12–2.08). Conclusions: The results indicated that the intensity and modality of mobile phone use could be a factor that can influence causal pathways leading to mental health problems in the university student population.

31 October 2007 in Journal of Vascular Surgery
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Journal Article
Closed access
DMDragan J. Milic
Dragan J. Milic
SZSasa S. Zivic
Sasa S. Zivic
DBDragan C. Bogdanovic
Dragan C. Bogdanovic
ZPZoran D. Perisic
Zoran D. Perisic
ZMZoran D. Milosevic
Zoran D. Milosevic
BJBojan M. Jovanovic
Bojan M. Jovanovic

1 November 2014 in Nursing Outlook
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Journal Article
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VVVladica M. Veličković
Vladica M. Veličković
Aleksandar VišnjićAleksandar Višnjić
Aleksandar Višnjić
SJSlađana Jović
Slađana Jović
OROlivera Radulović
Olivera Radulović
ČŠČedomir Šargić
Čedomir Šargić
JMJelena Mladenović
Jelena Mladenović

13 January 2020 in Medicina
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Journal Article
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DNDragan Nikolić
Dragan Nikolić
Aleksandar VišnjićAleksandar Višnjić
Aleksandar Višnjić
Background and Objectives: People employed in emergency medical services represent a professional group which encounters events beyond ordinary human experience, great work demands, the risk of professional disputes, and stressful situations. The goal of this study is to examine the presence of mobbing and violence at work, as well as their influence on work ability of emergency medical doctors. Materials and Methods: The survey is conducted in Emergency Medical Service (EMS) in Niš in the period between December 2017 and January 2018. Using standardized questionnaires on psychosocial conditions in work environment (COPSOQ II) and work ability index (WAI) this study encompasses 79 doctors. For estimation of the examined factors’ influence on WAI linear regression analysis was used. Results: EMS doctors were exposed to abuse in 30.4% of the cases. The decline in WAI is significantly related with exposure to violence by patients (β = 0.727), exposure to physical violence (β = 0.896), exposure to abuse several times (β = 0.691) and exposure to ill-treatment by patients (β = 0.750). Conclusion: The results indicate that in the examined doctors mobbing and workplace violence are very much present and have a negative impact on their work, and therefore on the quality of health care.

11 August 2020 in Medicina
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Journal Article
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PKPredrag Kovačević
Predrag Kovačević
SMSnežana Miljković
Snežana Miljković
Aleksandar VišnjićAleksandar Višnjić
Aleksandar Višnjić
JKJefta Kozarski
Jefta Kozarski
PKPredrag Kovacevic
Predrag Kovacevic
Background and objectives: Quality of life (QoL) after breast cancer surgery is an important public health issue. The aim of this study was to determine the relationship between the levels of perceived quality of life in patients operated on for breast cancer in relation to the type of surgery, using the standardized questionnaires. Materials and Methods: We assessed 425 women after surgery for breast cancer. The assessment included the application of the WHOQOL-bref (The World Health Organization Quality of Life-Bref), and FACT-B (Functional Assessment of Cancer Therapy-Breast) questionnaires. The statistical analysis of the data included multiple linear regression and correlation tests. Results: Multiple linear regression analysis found that education, existence of comorbidities, time elapsed since surgery, and type of surgery were significant predictors of overall quality of life. Women’s overall quality of life and general health has increased by 0.16 times for each subsequent year of surgery, and by 0.34 times for each subsequent higher education level. Breast-conserving surgery or mastectomy with breast reconstruction were statistically significant (β = 0.18) compared to total mastectomy. Conclusions: There is a significant difference in the quality of life perceived by patients in whom the breast has been preserved or reconstructed in relation to patients in whom total mastectomy has been performed.

1 January 2009
Verified
Journal Article
Open access
DSDijana Stojanović
Dijana Stojanović
Aleksandar VišnjićAleksandar Višnjić
Aleksandar Višnjić
VMVladimir Mitrovic
Vladimir Mitrovic
MSMiodrag Stojanovic
Miodrag Stojanovic
Background/Aim. Cardiovascular diseases are a leading cause of death in the majority of developed, as well as in many developing countries. The aim of this study was to determine cardiovascular risk factors in student population and to suggest possible measures for prevention. Methods. The study was carried out during 2007-2008 at the School of Medicine, University of Nis. It included 824 students in their final year (220 males, 604 females). Results. There was no significant difference in prevalence of hypertension among the male (1.81%) and female students (0%). The prevalence of obesity (Body Mass Index - BMI > 30 kg/m2) was significantly higher (p < 0.001) in the male (7.27%) than in the female population (1.32%). Abdominal obesity was also more frequently encountered (p < 0.01) in the male (9.09%) than in female population (1.32%). Every fourth student smoked cigarettes with no significant difference between the male and female students. Alcohol consumption was a significantly higher problem (p < 0.001) in the male population (18.18%) than in the female one (2.65%). Physical inactivity was more often found (p < 0.001) in the female students (65.56%), than in male ones (36.36%). By the bivariate correlation of cardiovascular risk factors, it was determined that in the male student population systolic blood pressure correlated significantly with diastolic blood pressure, BMI and waist size, whereas age correlated with sistolic blood pressure, waist size and smoking. In the female students sistolic blood pressure correlated with diastolic blood pressure, BMI and waist size; diastolic blood pressure correlated with BMI and physical inactivity; cigarette smoking correlated with alcohol consumption and age. Conclusion. Cardiovascular risk factors are present in the final-year students of the School of Medicine, University of Nis. It is necessary to insist on decreasing obesity prevalence, cigarette and alcohol consumption, and on increasing physical activity of students in order to prevent cardiovascular diseases.