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Dragan Piljic, M. Tabaković, A. C., Dilista Piljić, N. Sehic, Tarik Bakalovic, A. Skakić, Mirza Tokic et al.

A 78-year old man with a medical history of smoking, hyperlipidemia and hypertension was admitted to our department with ruptured abdominal aortic aneurysm (AAA) diagnosed by ultrasonography of the abdomen. The blood pressure was 60/20 mm Hg. An emergent computed tomography scan of the abdomen revealed a rupture of a giant infrarenal AAA of 16 cm in diameter with extensive intraluminal thrombus, evidence of rupture and large intraabdominal hematoma. The patient underwent a successful open surgical repair with placement of a Dacron tube graft 18 mm. The patient was transferred to the intensive care unit following successful surgical repair. Patient was transferred to the Department of cardiovascular surgery on postoperative day 2. Postoperative recovery resulted in hospital discharge at postoperative day 12.

Introduction: Chronic HCV infection is chronic inflamatory liver disease caused by hepatitis C virus. Anti HCV prevalence among intravenous drug users (IVDU) is very high and it accounts 40% -90% (60%-90%) with the risk of 80% of developing the chronic infection. Aim: The aims of this study were: a) to compare clinical characteristics of chronic HCV infection among IVDU and non-users population and to detect their impact to treatment outcome; b) to investigate the treatment efficacy comparing sustained viral response (SVR) in these two populations in Tuzla Canton. Patients and methods: The study was retrospective-prospective and included 45 IVDU of both sexes from Tuzla Canton which were treated from chronic HCV infection with Pegilated interferon 2a/2b + ribavirin in the Clinic for Infectious Diseases and Clinic for Internal Disease of University Clinical Centre in Tuzla. The control group were presented by non-users who completed therapy in both Clinics. For statistical analyses it was used statistical package SPSS 20,0 (SPSS Inc, Chicago, IL, USA) with tests of descriptive statistics with measures of central tendency and dispersion. Quantitative variables were tested by t-test or by Mann-Whitney test. Qualitative variables were tested by hi-square test or by Fisher’s test. The standard analyse of level’s risk was used too. The analyse of predictive value of EVR for achieving the ETR and SVR was done by cross-tabulation. The impact of known factors for achieving the SVR was evaluated by logistic regression analyses. All tests were done with statistical level of significance of 95% (p=0,05). Results: Men were more dominant in the test group (93,3% / 61,7%), also younger age (p<0,001) and lower BMI (p=0,019). The test group had significant higher basal values of Le, Hb, Plt and ALT and tendency to lower stages of fibrosis (p=0,08). The difference in genotype frequencies was statistically significant (p=0,001) with clearly dominance of G3 and G4 among IVDU. Treatment was not complited by two patients in both groups (4,4% /3,3%). EVR was significantly higher in test group (p=0,001) so did the ETR (p=0,002) and SVR (p<0,001). Predictive factors for SVR were: age (negative predictive factor), male sex, absence of reduction of pegilated interferon and ribavirin, Metavir stage of fibrosis and presence of EVR. Conclusion: Population of IVDU were adherent to treatment protocol and with excellent treatment response they justified the hope of health care workers for success treatment of this population.

Introduction: The main route of acquiring infectious blood and body fluids in hospital conditions is accidental exposure to stinging incidents. Aim: The aim of this study was to determine the epidemiological characteristics of accidental exposures to blood-borne pathogens among different professional groups of health care workers (HCWs). Materials and Methods: A cross-sectional study was conducted using the “Questionnaire on the HCWs exposure to blood and blood transmitted infections” at the University Clinical Centre Tuzla, Bosnia and Herzegovina, from the 1st of March to the 31st of December 2014. Study sample consisted of 1031 participants (65% of total employees) stratified into three occupational groups: doctors, nurses and support staff. Results and Discussion: Exposure incident was recorded in 1231 participants (54.8%) at least once in the last 12 months. An average number of exposure incidents per HCWs in total years of service was 7.07± 8.041. Out of total sample, 70% reported at least one type of exposure incident. Nurses had a higher frequency of multiple contacts compared to doctors and support staff (χ2=37.73; df=4; p<0.001). The frequency of reported incidents among nurses at the surgical departments was almost two times higher (1.7). 75.5% (778/1031) of the participants, reported not having been exposed to these incident. Doctors were significantly less likely to report exposure incidents than nurses and support staff. There were significant differences in reporting rate (χ2=32,66; df=4; p<0.001). Conclusion: HCWs in hospitals have a high prevalence of occupational exposure to blood-borne infections. Seventy percent of the HCWs is periodically or constantly exposed to or contact related to blood. Nurses are most frequently exposed occupational group among HCWs, while the lowest reporting rate on an exposure incident is among doctors.

Dragan Piljic, M. Petricevic, Dilista Piljić, Jus Ksela, B. Robič, T. Klokocovnik

Abstract Objective Elective minilaparotomy abdominal aortic aneurysm (AAA) repair is associated with a significant number of complications involving respiratory, cardiovascular, gastrointestinal, and central nervous systems, with mortality ranging up to 5%. In our study, we tested the hypothesis that intra- and postoperative intravenous restrictive fluid regimen reduces postoperative morbidity and mortality, and improves the outcome of minilaparotomy AAA repair. Methods From March 2009 to July 2013, 60 patients operated due to AAA were included in a prospective randomized controlled trial (RCT). About the administration of fluid during the operation and in the early postoperative period, all the patients were randomized into two groups: the group of standard fluid administration (S-group, 30 patients) and the group of reduced fluid administration (R-group, 30 patients). The verification of the treatment success was measured by the length of intensive care unit (ICU) stay, duration of hospitalization after the procedure, as well as the number and type of postoperative complications and mortality. This prospective RCT was registered in a publicly accessible database ClinicalTrials.gov with unique Identifier ID: NTC01939652. Results Total fluid administration and administration of blood products were significantly lower in R-group as compared with S-group (2,445.5 mL vs. 3308.7 mL, p = 0.004). Though the number of nonlethal complications was significantly lower in R-group (2 vs. 9 patients, p = 0.042), the difference in lethal complications remained nonsignificant (0 vs. 1 patient, p = ns). The average ICU stay (1.2 vs. 1.97 days, p = 0.003) and duration of postoperative hospital stay (4.33 vs. 6.20 days, p = 0.035 for R-group and S-group, respectively) were found to be significantly shorter in R-group. Conclusion Intra- and postoperative restrictive intravenous fluid regimen in patients undergoing minilaparotomy AAA repair significantly reduces postoperative morbidity, and shortens ICU and overall hospital stay. Even though incidence of lethal complication was lower in R-group, the difference did not reach statistical significance. Therefore, we may assume that this study was probably underpowered to estimate the differences in mortality between R- and S-groups. Further multicentric, sufficiently powered RCTs are needed to confirm these findings and to clarify effect of restrictive fluid management on mortality.

AIM To describe the first two cases of West Nile virus (WNV) neuroinvasive infections in Bosnia and Herzegovina. METHODS At the Clinic for Infectious Diseases of the University Clinical Centre Tuzla, Bosnia and Herzegovina (BiH), specific screening for WNV infection was performed on patients with neuroinvasive diseases from 1 August to 31 October 2013. Serum samples were tested for the presence of WNV IgM and IgG antibodies using enzyme-linked immunosorbent assay (ELISA); positive serum samples were further analyzed by detection of WNV nucleic acid of two distinct lineages (lineage 1 and lineage 2) in sera by RT-PCR. RESULTS Three (out of nine) patients met clinical criteria, and two of them had high serum titre of WNV specific IgM antibodies (3.5 and 5.2). Serum RT-PCR testing was negative. Conformation by neutralization testing was not performed. Both cases represented with encephalitis. None of these cases had recent travel history in WNW endemic areas, or history of blood transfusion and organ transplantation, so they represented autochthonous cases. CONCLUSION Although there were no previous reports of flavivirus infections in BiH, described cases had high titre of WNV specific antibodies in serum, and negative flavivirus-vaccination history, they were defined as probable cases because recommended testing for case confirmation was not performed. The West Nile virus should be considered a possible causative pathogen in this area, probably in patients with mild influenza-like disease of unknown origin and those with neuroinvasive disease during late summer and early autumn.

Introduction: More than three decades after recognition of acquired immunodeficiency syndrome (AIDS) in the United States, the pandemic of human immunodeficiency virus (HIV) infection has dramatically changed the global burden of disease. Aim: The main goal of this research is retrospective analysis of epidemiological and clinical characteristics of 28 HIV infected patients, who were diagnosed and treated at the Clinic for Infectious Diseases in University Clinical Center Tuzla in the period from 1996 until the end of 2013. Subjects and Methods: Retrospective analysis was performed using the medical records of 28 HIV-infected persons. Two rapid tests were used for HIV testing: OraQuick Advance test, Vikia HIV1/2, Elisa combo test, HIV RNA test. AIDS disease was determined by using the criteria from WHO. Results: Among a total of 28 HIV-infected persons, 23 (82.14%) were males and 5 (17.86%) were females, with the male: female ratio of 4,6:1. In terms of the transmission route, a large proportion of cases were infected through heterosexual contact 19 (67.86%). At the time of the first visit, 16 (57.15%) patients showed asymptomatic HIV infection, 4 (14.28%) HIV infection with symptoms other than the AIDS defining diseases, and 8 (28.57) had AIDS. At the time of first hospital visit, the CD4 + cells count ranged from 40 to 1795/µl (conducted in 19 patients), and mean value of CD4 + cells was 365,31/µl, and mean HIV RNA titer was 287 118 copies/ml³. Of 28 HIV-infected persons 39 cases of opportunistic diseases developed in 12 patients (42.9%). In terms of the frequency of opportunistic diseases, tuberculosis (12 cases, 42.9%). Among a total of 28 HIV-infected patients, 6 (21.4%) of them died. Conclusion: This study characterizes the epidemiological and clinical patterns of HIV–infected patients in Tuzla region of Bosnia and Herzegovina to accurately understand HIV infection/AIDS in our region, in the hope to contribute in the establishment of effective HIV guidelines in the Tuzla region of B&H in the future.

Medicinski Glasnik, Tarik Kapidžić Zenica, Herzegovina Bosnia, Selma Uzunović Zenica, Filip Čulo, Bosnia And Herzegovina, A. Redžić, Bosnia Sarajevo et al.

Original article 1 Mean platelet volume predicts the glycemic control deterioration in diabetes mellitus type 2 patients 36 Can a finding of cervical vestibular evoked myogenic potentials contribute to vestibular migraine diagnostics? 50 Does odor and taste identification change during hyperemesis gravidarum? 62 Factors affecting mortality in emergency surgery in cases of complicated colorectal cancer ABSTRACT Aim To investigate association of mean platelet volume (MPV) and glycemic control markers, and whether MPV could be used as a predictor of deterioration of glucoregulation in Diabetes mellitus type 2 (DMT2) patients. Methods The cross-sectional study included 106 DMT2 patients, treated at the Primary Health Care Centre in Zenica, distributed into groups according to glycated haemoglobin (HbA1c) values: A (n=44, HbA1c ≤7.0%) and B (n=62, HbA1c>7.0%). Spearman's correlation coefficients were calculated to evaluate the relationships between MPV and glycemic control markers. Binomial logistic regression analysis was performed to estimate the relationship between glycemic control, as dichotomous outcome, and MPV as the main predictor. Diagnostic value of MPV as a marker for poor glucoregulation was estimated by using ROC analysis. Results Mean platelet volume was significantly higher in the group B compared to the group A (p<0.0005). Significant positive correlations of MPV with fasting blood glucose and HbA1c were found in the total sample (rho=0.382, p<0.0005; rho=0.430, p<0.0005, respectively). Mean platelet volume was positively associated with the risk of inadequate glycemic control, with 2 times increased odds of inadequate glycemic control per femtoliter The area under ROC curve for MPV was 0.726 (95% CI: =0.628-0.823, p <0.0005). At the best cutoff value 9.55 fL, MPV showed sensitivity of 82% and specificity of 54.5%. Conclusion Mean platelet volume correlates with glycemic control markers in DMT2 patients. It could be used as a simple and cost-effective predictor of deterioration of glucoregulation.

Dragan Piljic, M. Tabaković, Almir Kusturica, Dilista Piljić, Alen Hajdarević, T. Klokocovnik

A 76-year-old male with a medical history of smoking and hypertension was admitted to our clinic with a ruptured abdominal aortic aneurysm (AAA) diagnosed by a trans-abdominal ultrasound. He was immediately brought to the emergency room (ER). His blood pressure was 80/40 mm Hg, with an HTC of less than 0.17. Six years earlier, he had noticed a painless, enlarging abdominal mass. An emergency abdominal computed tomographic angiography (CTA) with intravenous contrast showed a giant infrarenal AAA measuring 13x11 cm in diameter, with clear evidence of rupture and a large intra-abdominal hematoma (Figure 1). He was immediately brought to the operating theater (OT). Figure 1 Abdominal computed tomographic angiography with contrast showing: A) a ruptured giant abdominal aortic aneurysm (AAA), measuring 13x11 cm with B) a large inta-abdominal hematoma, that compresses the intra-abdominal organs. C) and D) showing a ruptured ... The approach to the abdomen was a classic median laparotomy. After we had opened the abdomen, we found a huge retroperitoneal hematoma that pushed beside the intra-abdominal organs rising almost to the edge of the rectal fascia. His blood pressure suddenly dropped to 45/25 mm Hg for the next several minutes. A continuous infusion of norepinephrine was administered (60 mcg/min), several doses of pure adrenalin (3 mg) and pure norepinephrine (1 mg). His blood pressure immediately rose to 80 mm Hg. During the surgery he was anuric. Autologous blood transfusion helped by cell saver was administered. Additionally, he received several doses of blood, blood derivates (fresh frozen plasma, cryoprecipitate, platelets), and other intravenous solutions totaling approximately 8 liters. We replaced the ruptured AAA using a 20 mm polytetrafluoroethylene (PTFE) vascular graft. After surgery he was transferred to the intensive care unit (ICU) where the blood pressure rose, and diuresis was established (Figure 2). Figure 2 Postoperative computed tomographic angiography (CTA) with contrast showing: A) complete sealing of the aneurysm and no endoleak detected. B) Abdominal CTA with contrast showing patency of the graft. On the first postoperative day, he was woken up without neurological deficits. Six days after surgery we performed a control CT angiography that showed normal findings on the abdominal iliac and leg vessels. Recovery was uneventful and he was discharged from hospital on postoperative day 10. Aneurysm size is the most important factor related to likelihood of rupture, and the risk increases substantially in large aneurysms. The annual rupture risk for AAA’s >8 cm is 30-50%.1 Symptomatic aneurysms present with back, abdominal, buttock, groin, testicular, or leg pain and require urgent surgical attention. Rupture of an AAA involves complete loss of aortic wall integrity, and is a surgical emergency requiring immediate repair.2 The sheer size of the aneurysm, the short length of the neck, and the dislodgment of abdominal organs that may be densely adhered to its surface with fistula formation, make surgery of this entity very challenging. Open repair of giant AAA’s is often the only available treatment, though not always with good results.3 In conclusion, open surgical repair is often the only viable treatment because aneurysm size implicates an adverse neck anatomy that makes these AAA’s not suitable for endovascular aneurysm repair.4 The repair of these giant aneurysms presents a challenge during surgery. Ruptured giant AAA’s present a significant additional surgical and anaesthetic challenge.

AIM To determine the prevalence and antimicrobial resistance of dominant causes of urinary tract infections (UTI) in patients treated at the Clinic for Infectious Diseases, University Clinical Center Tuzla during the period January 2010 to June 2011. METHODS This prospective study included 438 patients divided into three groups: hospital-treated patients group (H-T), outpatient- treated group (O-T) and patients with hospital-acquired (H-A) UTI. Identification of UTI causes completed using standard microbiological methods; antimicrobial susceptibility was done by disc-diffusion method according to the CLSI. RESULTS E. coli was significantly more commonly isolated in females H-T, 111 (68-1%) (p=0.012) and O-T, 148 (82.7%) (p=0.006) groups, as well as in females less than 65 years from the H-T, 87 (84.5%) (p=0.000) and H-A, four (40%) (p=0.044) groups. Klebsiella pneumoniae and Pseudomonas aeruginosa were significantly more commonly isolated in male H-T, 11 (29.7%) (p=0.000) and five (13.5%) (p=0.009), and O-T UTI, two (9.5%) (p=0.009) and three (14.3%) (p=0.000) groups. E. coli showed significantly higher prevalence of resistance to amoxycillin, coamoxiclav, cefuroxime, ceftriaxone, gentamicin and co-trimoxazole in the H-A group comparing to other two groups (p less than 0.05), as well as to ampicillin, amoxycillin and cefixime in the O-T comparing to H-T group (p less than 0.05). CONCLUSION Empirical antimicrobial therapy should include coamoxiclav, nitrofurantoin, cefepime, and ceftazidime for females less than 65 years old in both H-T and H-A, cefalosporines, co-amoxiclav and nitrofurantoin in O-T UTIs; for females more than 65 years old, cefalosporines, aminoglicosides, and ciprofloxacin, in H-T and O-T UTIs. For H-A UTI in females more than 65 years as well as for all male patients antimicrobial susceptibility testing should be performed.

AIM To determine a predictive potential of biochemical and clinical parameters, including independent predictors of the therapeutic outcome in patients with H1N1 influenza. METHODS In this retrospective study, 119 patients treated at the Clinic for Infectious Diseases in Tuzla in the period July 2009 to February 2010 were included. They were at the age of 1 month up to 80 years. The patients showed clinical, epidemiological and biochemical parameters of the pandemic flu and they had also been positive for the virus A (H1N1), which was confirmed by the real time polymerase chain reaction (RT-PCR). RESULTS One hundred and nineteen patients were positive to the virus A (H1N1), 60 (50.4%) were male, and 59 (49.6%) female patients. The average age of the patients was 26.74 years. The number of patients with co-morbidity was 53 (44.5%). There were 71 (59.7%) patients who had been admitted to the Intensive Care Unit. The complications of the flu had appeared in 45 (37.8%) patients. Pneumonia was recorded in 108 (90.8%), and reduced saturation in 62 (52.1%) patients. The highest number of cured patients was in the group of patients who had received the oseltamivir within 48 hours after the outbreak of the disease. CONCLUSION The age, reduced saturation with oxygen, duration of the hospitalization, pregnancy and overweight were independent predictors of the severe form of the disease/lethal outcome. For an optimal therapeutic outcome, it is important to apply antiviral therapy as soon as possible.

Introduction: Hospital-acquired Urinary tract infections make 35% of all the hospital-acquired infections, and about 80% of them are related to the catheterization of the urinary bladder Purpose: To determine clinical characteristics and dominant etiologic factors of Urinary Tract Infections associated with urinary catheter (C-UTIs). Methods: Determined clinical characteristics of C-UTIs were prospectively analyzed on 38 hospitalized patients in the Clinic for Infectious Diseases at the University Clinical Centre Tuzla, from January 1st 2011 to December 31st 2011. The control group constituted of 200 patients with community-acquired Urinary Tract Infections (Co-UTIs) hospitalized in the same period. Results: It was registered on 22 (57.89%) of symptomatic infections, 14 (36.84%) asymptomatic bacteriuria and 2 (5.26%) other C-UTIs. Dominant etiologic factors were: E. coli, caused 14 (36.84%), Extended-Spectrum Beta-lactamase producing (ESBL) Klebsiella pneumoniae 7 (18.42%), Enterococcus faecium and Candida spp. 3 (7.89%) of C-UTIs. E. coli was significantly most common etiologic factor of C-UTIs in younger women (p=0.04). E. coli from C-UTIS showed significantly higher resistance to antimicrobial drugs. Inadequate antimicrobial therapy was significantly more common prescribed to patients from C-UTIs. Lethal outcome was significantly most common associated with certain clinical and laboratory findings. Conclusion: Initial antimicrobial therapy of those serious infections should be based on data from those research.

INTRODUCTION Bacterial meningitis is one of the most serious infectious diseases in childhood. AIM To identify the most common causes of bacterial meningitis in children in Tuzla Canton. PATIENTS AND METHODS This is a retrospective study which included 140 children, aged from 1 month to 14 years, treated at the Clinic for Infectious Diseases Tuzla, in the period 1999-2009, who had clinical and laboratory parameters of bacterial meningitis. RESULTS In Tuzla Canton in ten year period were registered 140 cases of bacterial meningitis in children aged 1 month to 14 years. Prevalence was 1.53/1000. The average age of patients was 3.6 +/- 3.8 years. Male to female ratio was 1.3:1. April, May and November were the months with the most reported cases of bacterial meningitis (p = 0.02). Most affected were children 1-12 months of age (p < 0.001). The most common pathogens of bacterial meningitis were Haemophilus influenzae (13.6%), Neisseria meningitides (8.6%) and Streptococcus pneumoniae (5.7%) (p < 0.001). Mortality was 2.14%. CONCLUSION Bacterial meningitis is present in Tuzla Canton, and three major pathogens are Haemophilus influenzae, Neisseria meningitis and Streptococcus pneumoniae. The most affected were children 1-12 months of age, and most cases of bacterial meningitis occurred in spring.

Objective – Research was undertaken with the aim of analyzing the frequency of causes of bacterial meningitis (BM) in children before and after introduction of the conjugate vaccine against Haemophilus influenzae type b (Hib vaccine), and to analyze the age of patients and disease outcome.  Materials and methods – Data from the medical records of patients, age 1 month to 14 years, who were treated for BM at the Infectious Diseases Clinic Tuzla, in the period from 01.05.1999 to 30.06.2009 were analyzed as a retrospective cohort study. In relation to the introduction of the Hib vaccine the patients were divided into prevaccinal and postvaccinal periods.  Results – 140 children were treated for BM. The most common pathogens were Haemophilus influenzae (13.6%), Neisseria meningitidis (8.6%) and Streptococcus pneumoniae (5.7%). In the prevaccinal period there were 94 and in the postvaccinal 46 children (13 of them had been vaccinated). The number of BM cases decreased from 17.1 (prevaccinal period) to 10.2 (postvaccinal period) per year. The number of children hospitalized with BM caused by Neisseria meningitidis significantly decreased in the postvaccinal period (Fisher’ exact test, p=0.009), and Streptococcus pneumoniae was the most common cause of BM in the postvaccinal period (Fisher’ exact test, p=0.015). The frequency of Haemophilus influenzae as a cause of BM also significantly decreased in the postvaccinal period (Fisher’ exact test, p=0.034). Eleven children were under one year, and eight children were from one to five years of age. Three children died.  Conclusion – The most common causes of BM in children aged 1 month to 14 years were Haemophilus influenzae, Neisseria meningitidis and Streptococcus pneumoniae. After the introduction of Hib vaccine the number of BM cases caused by Haemophilus influenzae and the total number of BM cases was reduced.

Dilista Piljić, Dragan Piljic, S. Ahmetagić, F. Ljuca, Humera Porobić Jahić

Urinary tract infections (UTI) cause a great number of morbidity and mortality. These infections are serious complications in pregnancy, patients with diabetes, polycystic kidneys disease, sickle cell anaemia, kidney transplant and in patients with functional or structural anomalies of the urinary tract. The aim of this investigation was to determine a dominant causative agents of UTI and some of the clinical and laboratory characteristics of acute community-acquired UTI in adult hospitalised patients. We studied 200 adult patients with acute community-acquired UTI hospitalised in the Clinic for Infectious Diseases Tuzla from January 2006 to December 2007. The patients were divided into two groups: a group of patients with E. coli UTI (147) and a group of patients with non-E. coli UTI (53). In these two groups, the symptoms and signs of illness, blood test and urine analysis results were analysed. Our results have shown that the patients with E. coli UTI frequently had fever higher than 38,5 degrees C (p<0,0001), chills (p=0,0349), headache (p=0,0499), cloudy urine (p<0,0001), proteinuria (p=0,0011) and positive nitrite-test (p=0,0002). The patients with non-E. coli UTI frequently had fever lower than 38,5 degrees C (p<0,0001) and urine specific gravity <1015 (p=0,0012). There was no significant difference in blood test results between patients with E. coli and non-E. coli UTI. These clinical and laboratory findings can lead us to early etiological diagnosis of these UTI before urine culture detection of causative agents, which takes several days. Early etiological diagnosis of the E. coli and non-E. coli UTI is necessary for an urgent administration of appropriate empirical antibiotic treatment. This is very important in prevention of irreversible kidney damage, prolonged treatment, complications, as well as recidives and chronicity of the illness.

INTRODUCTION Etiological factors of community-acquired urinary tract infections (UTI) are specific for age, gender, season, complication of UTI and type of UTI. Their prevalence and susceptibility to antimicrobial agents shows geographic and time variability. PURPOSE To evaluate etiological characteristics of acute community-acquired UTI in hospitalised patients. PATIENTS AND METHODS This retrospective-prospective study included 200 adult patients with community-acquired UTI who were, in view of the serious clinical picture and unsuccessful ambulatory treatment, hospitalised in the Clinic for Infectious Diseases in Tuzla, for a period of two years (2006 and 2007). The data concerning the age, gender, season, complication of UTI and type of UTI were collected from the patient's records. Urine analysis was done following standard microbiological methods, and the antibiogram was done following standard disc-diffusion method on the Mueller-Hinton agar. WORK RESULTS The dominant etiological factors of UTI were: E. coli (73.5%), Klebsiella spp. (8.5%), Proteus mirabilis (5.5%), Pseudomonas aeruginosa (4.5%) and Enterococcus faecalis (3%). The predominant etiological factor of this UTI was E. coli (P < 0.0001). E. coli was significantly more frequent etiological factor of UTI in females (P < 0.0001). There was no significant difference in the frequency between etiological factors of UTI for different age groups of patients (P = 0.173), or for different seasons (P > 0.05). All etiological factors are significantly more frequent during warmer periods of the year (P < 0.05). E. coli is a significantly more frequent etiological factor in complicated and non-complicated pyelonephrytis and cystourethritis (P < 0.05), but there was no significant difference of frequency between etiological factors of prostatitis (P = 0.7163). By analyzing the susceptibility for antimicrobials, we found that E. coli has good susceptibility for Cephalosporins of the third generation, for Gentamycin, Nitrofurantoin, Norfloxacin, Ciprofloxacin and Pipemidin acid (susceptibility higher than 88.7%), Klebsiella spp. for Imipenem and Meropenem (susceptibility 100%), Proteus mirabilis for Imipenem (susceptibility 100%) and relatively for Amikacin (susceptibility 81.8%), Pseudomonas aeruginosa for Imipenem (susceptibility 100%) and for Meropenem (susceptibility 87.5%) and Enterococcus faecalis for Vancomycin (susceptibility 100%) and relatively for Ampicillin, Amoxicillin, Ciprofloxacin, Doxicyclin and Nitrofurantoin (susceptibility 83.4%). CONCLUSION Etiological characteristics of UTI are specific for different regions. Evaluation of these characteristics in our region is the basis for empirical antimicrobial therapy of UTI, which is necessary for a timely and successful treatment of UTI.

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