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Search Results: 1 - 10 of 3054 matches for " ?or?evi? Zorana "
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Stoli? Radojica,?or?eviZorana
Srpski Arhiv za Celokupno Lekarstvo , 2012, DOI: 10.2298/sarh1212813s
Abstract: nema
Urinary tract nosocomial infections at the Clinical centre in Kragujevac
?or?eviZorana,Ili? Milena
Srpski Arhiv za Celokupno Lekarstvo , 2012, DOI: 10.2298/sarh1204184d
Abstract: Introduction. Urinary tract infections are the most frequent hospital infections and account for about 40% of total hospital infections. The main risk factor for their development is the use of catheters. Objective. Assessment of basic epidemiological and etiological characteristics of nosocomial urinary tract infections (NUTIs) and investigation of differences in risk factors among the patients with NUTIs with and without the urinary catheter. Methods. The study comprised patients treated in chosen units/ of the Clinical Center in Kragujevac, in whom NUTI was registered during 2009. Differences in risk factors for NUTIs between the catheterized and uncatheterized patients were tested by the logistic regression analysis. Results. NUTIs was registered in 162 patients whose average age was 66.2±13.5 years with approximately equal gender participation (51.2% men and 48.8% women). Almost three quarters of the patients with NUITs had indwelling urinary catheter, 12.0±7.7 days on average (from 1 to 39 days). In the patients with urinary catheter, the risk for NUITs was significantly positively associated with emergency admission to hospital treatment (p=0.0185). The uncatheterized patients had a significant frequency of malignant tumours comparing to the patients with a urinary catheter (p=0.039). The compared groups did not differ in other risk factors. The most frequently isolated microbial agents was Klebsiella spp (37.3%), then Pseudomonas aeruginosa (14.1%) and Proteus mirabilis (11.9%). Most of the bacteria showed a great level of resistance to frequently used antibacterial drugs, even up to 100%. Conclusion. It is necessary to define national recommendations for the prevention and control of NUTIs in the future.
Changes in position and relationship between jaws in children treated with Delair’s mask
Gli?i? Branislav,??epan Ivana,Nikoli? Zorana,?or?evi? Du?an
Stomatolo?ki Glasnik Srbije , 2004, DOI: 10.2298/sgs0404177g
Abstract: The aim of this study was to examine the efects of Delair`s mask on facial skeleton in patients with Class III antero-posterior jaw relationship. Two groups of children were evaluated. The first group of 34 children with Class III was treated with Delair`s mask. The second group of 46 children with Class III did not receive any orthodontic treatment and was presented as a control group. In the first group pretreatment and post treatment radiographic tracing was done while second tracing in the control group was done a year after diagnostic radiographic tracing. Analysis of the skeletal facial profile was done measuring SNA, SNB and ANB angles. Rotation of the maxillary base (NS/SpP), rotation of the mandibular base (NS/MP) and vertical relationship between jaws (SpP/MP) were also measured. The results were statisticaly analysed using T test, descriptive statistics and Wilcoxon`s test. The results of this study showed changes in facial skeleton in children treated with Delair`s mask compared to the control group. In the first group of children SNA and ANB angles were increased and the SNB angle was decreased.
Risk factors for acute respiratory distress syndrome development in patients with type A influenza (H1N1)
?or?eviZorana,Lazi? Zorica,Gajovi? Olgica,?anovi? Predrag
Srpski Arhiv za Celokupno Lekarstvo , 2012, DOI: 10.2298/sarh1208441d
Abstract: Introduction. Acute respiratory distress syndrome (ARDS) is a significant complication in patients with type A influenza (H1N1) due to the severity of the disease and adverse outcome. Objective. The aim of the study was to identify risk factors for the development of ARDS in patients with type A influenza (H1N1) and outcome of ARDS. Methods. The research was conducted as a case series study, and included patients admitted at the Clinical Center in Kragujevac during the 2009 and 2010 flu season. Data for the study were obtained from patients’ medical records, inclusion criteria having been determined in accordance with recommendations of the Expert Methodological Guide for Controlling Spread of Pandemic Influenza in the Republic of Serbia. Primary data analysis was performed using descriptive statistics and a statistical method for testing hypotheses. Dependence analysis was performed using simple logistic regression. The statistical hypotheses were tested at the 0.05 level of significance. Results. The case group consisted of 14 patients who developed ARDS, while the control group was composed of 34 patients with influenza but without ARDS (group alignment performed by age). Simple logistic regression analysis identified the following risk factors for the development of ARDS: diabetes mellitus type 1 or 2 (p=0.028), high levels of C-reactive protein (p=0.004), aspartate-aminotransferase (p=0.006), urea (p=0.028), creatine kinase (p=0.001), lactate-dehydrogenase (p=0.005) and longer time elapsed from disease symptoms onset to the administration of specific antiviral therapy administration (p=0.021). Conclusion. The research showed that diabetes, late initiation of antiviral therapy and some laboratory tests are risk factors for ARDS development in patients with type A influenza (H1N1).
Dermatomyositis associated with metastatic rectal adenocarcinoma: Case report
Vesi? Sonja,?akovi? Zorana,Vuki?evi? Jelica,Vukovi? Jelena
Medicinski Pregled , 2009, DOI: 10.2298/mpns0910473v
Abstract: Introduction. Dermatomyositis is an idiopathic inflammatory myopathy with characteristic cutaneous changes. The disease belongs to paraneoplastic dermatosis. Association of dermatomyositis with malignant conditions has been described in various studies. We present a patient with paraneoplastic dermatomyositis associated with metastatic rectal adenocarcinoma. Case report. A 66 - year - old man was hospitalized in our Institute due to skin changes and myopathy in October 2006. According to the medical documents and history, he underwent surgery because of rectal adenocarcinoma in April 2006. Skin changes appeared 5 months before, while aggravation occurred 6 months after the surgery. The diagnosis of dermatomyositis was based on: characteristic clinical picture; the elevated serum level of following enzymes: creatinine kinase, lactate dehydrogenase; the presence of anti - Mi 2 antibodies in serum; electromyographic finding; and by histology of the muscle biopsy. Paraneoplastic nature of dermatomyositis was confirmed by computer tomography of the abdomen which revealed multiple deposits in the liver, by explorative laparotomy showing peritoneal dissemination and histopathological analysis that verified metastatic adenocarcinoma of the rectum. The oncological consulting team suggested chemotherapy which was not carried out because of the rapid lethal outcome. Conclusion. We report a case of paraneoplastic dermatomyositis associated with metastatic rectal adenocarcinoma and lethal outcome, and suggest a comprehensive evaluation of patients with dermatomyositis older than 50 years in order to exclude or verify the occult malignancy.
Ocular rosacea
?akovi? Zorana,Vuki?evi?-Sretenovi? Jelica,Dobrosavljevi? Danijela,Milenkovi? Svetislav
Vojnosanitetski Pregled , 2004, DOI: 10.2298/vsp0402205d
Abstract: Five cases of ocular rosacea (one male and four females) are reported in this paper. Two of the patients were with keratoconjunctivitis sicca, one with conjunctivitis chronica and blepharitis, one with conjunctivitis chronica and meibomitis, and one with reccurent corneal erosions with meibomitis and chordeloum. In four patients ocular symptoms preceded the occurence of skin lesions. The treatment with oral tetracyclines significantly improved the state of ocular rosacea in four patients, while in one case the changes of the anterior eye segment progressed in more severe state of ulcerative keratitis. It is considered that in almost 20% of the patients with rosacea ocular lesions may precede the skin changes, representing a diagnostic problem. Thus, in those cases multidisciplinary approach is suggested. Such approach is particularly important because of the decrease of morbidity and the prevention of the onset of the eye complications such as drastic worsening of visual acuity, i.e., the blindness.
Oxidative stress is reduced in Wistar rats exposed to smoke from tobacco and treated with specific broad-band pulse electromagnetic fields
Baji? V.,Baji? B.,Mili?eviZorana,Risti? Slavica
Archives of Biological Sciences , 2009, DOI: 10.2298/abs0903353b
Abstract: There have been a number of attempts to reduce the oxidative radical burden of tobacco. A recently patented technology, pulse electromagnetic technology, has been shown to induce differential action of treated tobacco products versus untreated products on the production of reactive oxygen species (ROS) in vivo. In a 90-day respiratory toxicity study, Wistar rats were exposed to cigarette smoke from processed and unprocessed tobacco and biomarkers of oxidative stress were compared with pathohistological analysis of rat lungs. Superoxide dismutase (SOD) activity was decreased in a dose-dependent manner to 81% in rats exposed to smoke from normal cigarettes compared to rats exposed to treated smoke or the control group. These results correspond to pathohistological analysis of rat lungs, in which those rats exposed to untreated smoke developed initial signs of emphysema, while rats exposed to treated smoke showed no pathology, as in the control group. The promise of inducing an improved health status in humans exposed to smoke from treated cigarettes merits further investigation.
Defect states in Ce0.85Nd(Gd)0.15O2-δ nano-crystals investigated by Raman spectroscopy
Lazarevi? Nenad ?.,Doh?evi?-Mitrovi? Zorana D.,Gruji?-Broj?in Mirjana U.,??epanovi? Maja J.
Hemijska Industrija , 2009, DOI: 10.2298/hemind0903221l
Abstract: Defect structures related to the intrinsic and extrinsic oxygen vacancies in Ce0.85Nd(Gd)0.15O2-δ nanocrystals were studied by Raman scattering spectroscopy during the temperature treatment. It was observed that the agglomeration effect has major contribution to the stoichiometry of Ce0.85Nd(Gd)0.15O2-δ, namely the change of surface to volume ratio in nanocrystals has significant influence on the concentration and type of defect formed structures. Investigation of these structures is very important from the aspect of application of doped cerium dioxide as an electrolyte in solid oxide fuel cells.
Characterisation of nanodimensional structures using spectroscopic ellipsometry
Miri? Milka M.,Radovi? Marko B.,Gaji? Rado? B.,Doh?evi?-Mitrovi? Zorana D.
Hemijska Industrija , 2009, DOI: 10.2298/hemind0903227m
Abstract: In this paper, using spectroscopic ellipsometry we studied the optical properties of thin films, nanocrystals and carbon nanotubes in UV-VIS-NIR range. With a three-phase model, we calculated the thickness of the SiO2 film on a silicon substrate. Using the model for multilayer structure together with the Bruggeman effective medium approximation we determined the existence of roughness on a glass substrate and we calculated the thickness of that layer. We also determined the thicknesses of 12 layers, Si3N4 i SiO2 deposited alternately on a glass substrate. The dielectric function of CeO2 nanocrystal was modeled using the Tauc-Lorentz model and we calculated the value of the energy gap for this material. By analyzing the ellipsometry spectra for the carbon nanotube layer on the silicon substrate, we measured the real and imaginary part of its dielectric function.
Investigation of thermostability of Mo6S3I6 nanowires using Raman spectroscopy
Todorovi? Jelena M.,?oki? Dejan M.,Doh?evi?-Mitrovi? Zorana D.,Mihailovi? Dragan
Hemijska Industrija , 2009, DOI: 10.2298/hemind0903217t
Abstract: The thermostability (phase stability) of Mo6S3I6 nanowires was investigated by Raman spectroscopy, varying the incident laser power (1-9 mW) or by gradual heating of the sample from room temperature to 600°C. We have noticed 18 Raman modes in the room temperature Raman spectra, which is in good agreement with the factor group analysis prediction for P1 space group. We confirmed that the vibrations of Mo6S8 clusters dominate in vibrational properties of the Mo6S3I6 nanostructure, since nanowires Raman spectra are similar to Chevrel phase Raman spectra. During the temperature treatment, it was established that in the temperature range between 300 and 400°C a new Raman mode appeares. This mode can be ascribed to molybdenum oxide (MoO3). With further temperature increase, the intensity of this mode increases, drawing a conclusion that at temperature above 300°C the phase separation takes place in this system followed by a formation of oxide layer.
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