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Dive into the research topics where Ivan Cekerevac is active.

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Featured researches published by Ivan Cekerevac.


Jornal Brasileiro De Pneumologia | 2015

Community-acquired pneumonia: economics of inpatient medical care vis-à-vis clinical severity,

Vojislav Cupurdija; Zorica Lazic; Marina Petrovic; Slavica Mojsilovic; Ivan Cekerevac; Nemanja Rančić; Mihajlo Jakovljevic

Objective: To assess the direct and indirect costs of diagnosing and treating community-acquired pneumonia (CAP), correlating those costs with CAP severity at diagnosis and identifying the major cost drivers. Methods: This was a prospective cost analysis study using bottom-up costing. Clinical severity and mortality risk were assessed with the pneumonia severity index (PSI) and the mental Confusion-Urea-Respiratory rate-Blood pressure-age ≥ 65 years (CURB-65) scale, respectively. The sample comprised 95 inpatients hospitalized for newly diagnosed CAP. The analysis was run from a societal perspective with a time horizon of one year. Results: Expressed as mean ± standard deviation, in Euros, the direct and indirect medical costs per CAP patient were 696 ± 531 and 410 ± 283, respectively, the total per-patient cost therefore being 1,106 ± 657. The combined budget impact of our patient cohort, in Euros, was 105,087 (66,109 and 38,979 in direct and indirect costs, respectively). The major cost drivers, in descending order, were the opportunity cost (lost productivity); diagnosis and treatment of comorbidities; and administration of medications, oxygen, and blood derivatives. The CURB-65 and PSI scores both correlated with the indirect costs of CAP treatment. The PSI score correlated positively with the overall frequency of use of health care services. Neither score showed any clear relationship with the direct costs of CAP treatment. Conclusions: Clinical severity at admission appears to be unrelated to the costs of CAP treatment. This is mostly attributable to unwarranted hospital admission (or unnecessarily long hospital stays) in cases of mild pneumonia, as well as to over-prescription of antibiotics. Authorities should strive to improve adherence to guidelines and promote cost-effective prescribing practices among physicians in southeastern Europe.


International Journal of Chronic Obstructive Pulmonary Disease | 2016

Influence of inhaler technique on asthma and COPD control: a multicenter experience

Aleksandra Ilic; Vladimir Zugic; Biljana Zvezdin; Ivan Kopitovic; Ivan Cekerevac; Vojislav Cupurdija; Nela Perhoc; Vesna Veljkovic; Aleksandra Barac

Background The successful management of asthma and chronic obstructive pulmonary disease (COPD) mostly depends on adherence to inhalation drug therapy, the usage of which is commonly associated with many difficulties in real life. Improvement of patients’ adherence to inhalation technique could lead to a better outcome in the treatment of asthma and COPD. Objective The aim of this study was to assess the utility of inhalation technique in clinical and functional control of asthma and COPD during a 3-month follow-up. Methods A total of 312 patients with asthma or COPD who used dry powder Turbuhaler were enrolled in this observational study. During three visits (once a month), training in seven-step inhalation technique was given and it was practically demonstrated. Correctness of patients’ usage of inhaler was assessed in three visits by scoring each of the seven steps during administration of inhaler dose. Assessment of disease control was done at each visit and evaluated as: fully controlled, partially controlled, or uncontrolled. Patients’ subjective perception of the simplicity of inhalation technique, disease control, and quality of life were assessed by using specially designed questionnaires. Results Significant improvement in inhalation technique was achieved after the third visit compared to the first one, as measured by the seven-step inhaler usage score (5.94 and 6.82, respectively; P<0.001). Improvement of disease control significantly increased from visit 1 to visit 2 (53.9% and 74.5%, respectively; P<0.001) and from visit 2 to visit 3 (74.5% and 77%, respectively; P<0.001). Patients’ subjective assessment of symptoms and quality of life significantly improved from visit 1 to visit 3 (P<0.001). Conclusion Adherence to inhalation therapy is one of the key factors of successful respiratory disease treatment. Therefore, health care professionals should insist on educational programs aimed at improving patients’ inhalation technique with different devices, resulting in better long-term disease control and improved quality of life.


Srpski Arhiv Za Celokupno Lekarstvo | 2011

Obesity and chronic obstructive pulmonary disease

Ivan Cekerevac; Zorica Lazic

INTRODUCTION Nutritional abnormalities have one of the most important systematic effects on chronic obstructive pulmonary disease (COPD). A relationship between COPD and obesity has been observed and recognised. In COPD patients, beside changes in the total body weight, changes in body composition are also possible with the loss of fat-free mass (FFM). OBJECTIVE This study was undertaken to evaluate the impact of obesity and the change of body composition on the pulmonary function, dyspnoea level and the quality of life in COPD patients. METHODS Seventy-nine patients in the stable state of COPD were evaluated. Pulmonary function and arterial blood gas analysis were assessed. Nutritional status was analyzed according to Body Mass Index (BMI). Body composition was evaluated by using anthropometric measurement by fat free mass index (FFMI). Quality of life was assessed using the St. George Respiratory Questionnaire (SGRQ). The Visual Analogue Scale (VAS) was used to evaluate dyspnoea. RESULTS The highest prevalence of obesity (50.0%) was found in patients with mild COPD, while the lowest prevalence was detected in very severe COPD patients (10.0%). The loss of FFM occurred in 22.2% patients with normal body weight and in 9.0% of overweight COPD patients.The quality of life was lower in obese patients compared to other COPD patients. A higher dyspnoea level was also present in obese patients. The lowest airflow obstruction was in obese patients (p = 0.023). We found a significant positive correlation between forced expiratory volume in the first second (FEV1%) and BMI (r = 0.326, p = 0.003), FEV1% and FFMI (r = 0.321, p = 0.004). CONCLUSION The highest prevalence of obesity was in patients with mild COPD. Obese patients with COPD had the lowest level of airflow obstruction, higher dyspnoea level and lower quality of life in comparison to other COPD patients.


Srpski Arhiv Za Celokupno Lekarstvo | 2017

The prevalence of resistance to macrolides and lincosamides among community and hospital acquired Staphylococci and Streptococci isolates in southeast Serbia

Milena Mišić; Aleksandra Arsovic; Jelena Cukic; I Milenko Rosic; Jelena Zivadin Tosic-Pajic; Nevena Manojlovic; Ivan Cekerevac; Dejan Vidanović; Milanko Šekler; Dejan Baskic

Introduction/Objective The increasing resistance to macrolides and lincosamides among staphylococci and streptococci is becoming a global problem. The aim of this study was to investigate the prevalence of macrolide-lincosamide-streptogramin (MLS) resistance phenotypes in staphylococcal and streptococcal isolates in southeast Serbia. Methods The MLS phenotypes were determined by the double-disk diffusion method in 2,121 inpatient and outpatient staphylococcal and streptococcal isolates collected during a one-year period at the Center for Microbiology. Results The methicillin-resistant staphylococci isolates were significantly more resistant to penicillin, erythromycin, clindamycin, gentamicin, and ciprofloxacin (100%, 100%, 29.2%, 65.6%, and 53.1%, respectively) than the methicillin-sensitive ones (93.6%, 64.9%, 12%, 28.9%, and 11.7%, respectively). The inducible clindamycin resistance phenotype was dominant in S. aureus and coagulase-negative staphylococci isolates. S. pneumoniae, S. pyogenes, and S. agalactiae isolates showed very high resistance to erythromycin (77.8%, 46.2%, and 32.4%, respectively). All staphylococci and streptococci isolates were sensitive to vancomycin and linezolid, and all beta-hemolytic streptococci isolates to penicillin and ceftriaxone. Conclusion The phenotypic triage of staphylococci is necessary in order to separate inducible resistant and truly clindamycin-sensitive isolates. Macrolides should not be recommended for empirical therapy of streptococcal infections. Penicillins remain the drug of choice for treatment of streptococcal infections in our local area.


Serbian Journal of Experimental and Clinical Research | 2017

Life-Threatening Plasmodium Falciparum Malaria in Patient after Visiting Angola-Case Report

Olgica Gajovic; Marijana Stanojevic-Pirkovic; Biljana Popovska-Jovicic; Ljiljana Nesic; Zeljko Mijailovic; Ivan Cekerevac; Romana Susa; Jagoda Gavrilovic

Abstract Malaria is a potentially life-threatening disease, especially when complicated by a septic shock. It is caused by infection of erythrocytes with protozoan parasites of the genus Plasmodium that are inoculated into the humans by a feeding female anopheline mosquito. Of the four Plasmodia species, infection with Plasmodium (P.) falciparum is often associated with different types of complications and significant mortality. Most imported cases of malaria are not in tourists but in immigrants and their children who have returned to the country of their family’s origin to visit friends and relatives (so-called VFR travelers) and have forgone chemoprophylaxis. We described a case of a 52 year old patient who came from Angola, an African country with endemic malaria before the occurrence of the first symptoms of the disease. The first symptoms were not recognized by the presence of nonspecific symptoms. Very soon the patient was gone under the hemodynamic unstability that eas followed by shock and high percentage parasitemia of 25%. A global health disorder was developed accompanied with hemodynamic instability and cerebral dysfunction. He performs pulmonary ventilation disorder and renal failure. Only data from social epidemiological survey of travel to the African country, was sufficient to cast doubt on malaria. The diagnosis was conducted using the standard method - peripheral blood smear. After turning antimalarial drugs, improvement of health status with complete recovery within 10 days was noticed. The only consequence of the disease is persistent hypertension that is sensitive to standard antihypertensive therapy.


Vojnosanitetski Pregled | 2016

Churg-Strauss vasculitis in patient who received montelukast

Vojislav Cupurdija; Ivan Cekerevac; Marina Petrovic; Gordana Kostic; Romana Susa; Zorica Lazic

Introduction. Montelukast is a selective leukotriene receptor antagonist. One of side effects of this drug class is the ChurgStrauss syndrome (CSS). There is still no reliable evidence whether the expression of this syndrome could be masked by high doses of corticosteroids and become expressed by termination of corticosteroid use, or whether it could be a consequence of leukotriene receptor antagonists use. Case report. Female patient, aged 49 years, was hospitalized with symptoms of fever, dyspnea, cough and increased sputum production with occasional hemoptysis. She was treated for asthma during the previous year. Leukocyte differential formula registered 44% of eosinophils. IgE value was extremely elevated, with value measured to 580 kU/L and eosinophile cation protein value was 15.1 μg/L. Computed tomography of the chest described changes in the form of ground glass located in all lobes of the right lung and in the upper lobe of the left lung. Computed tomography of paranasal sinuses described changes that could resemble to polyposis, chronic sinusitis, and possible granulomatosis. Mononeuritis of peroneal nerve of the right leg was proven by electromyographic examination. Bone marrow biopsy indicated hypercellularity with domination of eosinophilic granulocytes (30%). Five out of six criteria were noted in patient’s clinical presentation, after which the diagnosis of CSS was set. The patient began treatment with high doses of corticosteroids while montelukast was discontinued which resulted in disease remission. Conclusion. Although there is no evidence that leukotriene modifiers cause the CSS in all patients with asthma, in case of frequent exacerbations with the appearance of pulmonary infiltrates, eosinophilia and paranasal sinus abnormalities make one think of this form of vasculitis.


Serbian Journal of Experimental and Clinical Research | 2016

Unusual Respiratory Manifestations of Ankylosing Spondylitis – A Case Report

Ivan Cekerevac; Vojislav Cupurdija; Ljiljana Novkovic; Zorica Lazic; Marina Petrovic; Olgica Gajovic; Romana Susa

Abstract A male patient, 54 years old, was initially admitted to the hospital because of fatigue he felt during the last month and swelling of the lower legs. Upon hospital admittance, gas exchange analysis showed global respiratory failure: pO2=6.1 kPa, pCO2=10.9 kPa, pH=7.35, A-a gradient = 1.0. Due to the existence of hypercapnia and decompensated respiratory acidosis, the patient was connected to a device for non-invasive mechanical ventilation. Reduced chest mobility was noticed, and the respiratory index value was decreased. Radiographs of the chest and thoracic and lumbo-sacral spine showed marked changes on the spine attributable to ankylosing spondylitis (AS). Radiographs of the sacroiliac joints showed reduced sacroiliac joint intraarticular space with signs of subchondral sclerosis. The diagnosis of AS was set on the basis of New York Criteria (bilateral sacroiliitis, grade 3) and clinical criteria (back pain, lumbar spine limitation and chest expansion limitation). HLA typing (HLA B27 +) confirmed the diagnosis of AS. Pulmonary function test proved severe restrictive syndrome. Polysomnography verified the existence of severe obstructive sleep apnoea (AHI =73). This was a patient with newly diagnosed AS, with consequent severe restrictive syndrome and global respiratory failure with severe obstructive sleep apnoea. Thee patient was discharged from the hospital with a NIV (global respiratory failure) device for home use during the night.


Medicinski Pregled | 2008

Recurrent respiratory infections with severely damaged lung functions: Kartagener's syndrome: Case report

Ivan Cekerevac; Vladimir Jakovljevic; Ljiljana Novkovic; Dragan Radovanovic; Zorica Lazic

INTRODUCTION Kartageners (or Siewert) syndrome represents a clinical presentation of primary ciliary diskinesia (PCD) with 3 dominant symptoms: bronchiectasiae, chronic sinusitis and situs viscerum inversus totalis or dextrocardia, only. Siewet demonstrated the first case of this clinical phenomenon in 1904, which was recognized by Kartagener in 1933, as a congenital disorder. PCD is an autosomal recessive disease with extensive genetic heterogenity. Dyskinetic or completely absent motiliy of cilia predisposes to recurrent pulmonary and upper respiratory tract infections resulting in bronchiestasis. Also, infections of the middle ear are common due to lack of ciliary movement in the Eustachian tube. Men have reduced fertility due to spermatozoa with absent motility or abnormalities in the ductuli efferentes. CASE REPORT Our case report represents a middle age woman, treated ambulatory for many years as a chronic obstructive pulmonary disease (COPD). The patient noted recurrent upper respiratory tract infections from her childhood, headaches and recurrent sinusitis. Also, she had extrauterine pregnancy, no children, in spite of several arteficial inseminations. Due to the clinical signs of the right heart failure and the described ECG changes, the echocardiographic examination was done, which showed the dextracardia and the ultrasonographic examination of the abdomen revealed the situs inversus, the finding being within the physiological limits. CONCLUSION All data regarding situs viscerum invesrus, supported by CT verification of bronchiectasiae and chronic inflammation of maxillar sinus led us to conclude that the patient suffered from Kartageners syndrome.


Medicinski Pregled | 2013

Early detection of asthma and chronic obstructive pulmonary disease in primary care patients.

Marija Vukoja; Predrag Rebic; Zorica Lazic; Marija Mitic-Milikic; Branislava Milenkovic; Biljana Zvezdin; Ivan Cekerevac; Mirjana Jovancevic-Drvenica; Sanja Hromis; Ivan Kopitovic


Vojnosanitetski Pregled | 2011

Risk factors for brain metastases in surgically staged IIIA non-small cell lung cancer patients treated with surgery, radiotherapy and chemotherapy

Marina Petrovic; Nevenka Ilic; Olivera Loncarevic; Ivan Cekerevac; Zorica Lazic; Ljiljana Novkovic; Vojislav Cupurdija; Gordana Kostic

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Zorica Lazic

University of Kragujevac

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Gordana Kostic

University of Kragujevac

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Olgica Gajovic

University of Kragujevac

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