High-quality and easy-to-regenerate personal filter.

Proper respiratory tract protection is the key factor to limiting the rate of COVID-19 spread and providing a safe environment for health care workers. Traditional N95 (FFP2) respirators are not easy to regenerate and thus create certain financial and ecological burdens; moreover, their quality may vary significantly. A solution that would overcome these disadvantages is desirable.

Professional stress and health among critical care nurses in Serbia.

The aim of this study was to identify and analyse professional stressors, evaluate the level of stress in nurses in Intensive Care Units (ICU), and assess the correlation between the perception of stress and psychological and somatic symptoms or diseases shown by nurses. The research, designed as a cross-sectional study, was carried out in the Intensive Care Units (ICU), in health centres in Serbia. The sample population encompassed 1000 nurses.

[The most frequent injury with mechanical corn picker during harvest--possibility of prevention].

Introduction: Inappropriate machine operating, long work hours and decreased concentration of machine operators create conditions for getting injured A corn picker is the most often cause of hand injuries among agricultural machineries.

Material And Methods: The study included 43 persons with hand injuries during corn harvest, treated in the four-year period (2006-2009). The study subjects were analysed by sex, age, season, type of injury, affected parts of the hands, length of treatment and data on being trained to work with the corn picker.

[Mobbing--special reference to the nursing profession].

Introduction: Heinz Leymann defined this phenomenon as a hostile and unethical communication. In his definition Leymann points out that the distinction between "conflict" and "mobbing" does not focus on what is done or how it is done, but rather on the frequency and duration of whatever is done. The exposure to the strain of mobbing begins to result in psychiatrically or psychosomatically pathological conditions due to the accumulation of negative emotions.

[Systemic and paraneoplastic manifestations of malignant diseases].

Timely diagnosis of malignant diseases largely depends on attention being given to early symptoms and on timely start of an extensive diagnostic process. Only this way can a tumour be diagnosed in its initial stage, and better effect of therapy can be achieved. The following overview provides a list of systemic (paraneoplastic - distant) manifestations of a tumour, and of symptoms related to local tumour expansion.

Mechanical cornpicker hand injuries.

Mechanical cornpicker hand injuries are not frequent in comparison to general hand trauma, but they have a specific mechanism of occurrence and are very severe. This investigation included 221 hand injuries. The sex distribution shows a general male dominance (85.

Presymptomatic spondylotic cervical cord compression.

Study Design: We conducted a cohort study of clinically asymptomatic spondylotic cervical cord compression cases with the primary end point of the development of clinical signs of cervical myelopathy.

Objectives: To investigate whether various demographic, clinical, radiologic, and electrophysiological parameters could predict progression from clinically asymptomatic (preclinical) spondylotic cervical cord compression to symptomatic myelopathy.

Summary Of Background Data: The data available on the prediction of the outcome in surgical and conservative treatment of spondylotic cervical myelopathy are controversial.

Epidermoid tumor of the pons.

Epidermoid tumors originating from the brainstem are extremely rare. The authors report a patient with an intraaxial epidermoid tumor of the pons. The tumor involved most of the pons and had a small exophytic component.

Dermoid tumor with involvement of the frontal lobes.

Intraparenchymal location of a dermoid tumor is extremely rare, and there are only four reports in the literature. This article presents a patient with a dermoid tumor with trilobulated components; an extra-axial component in the basal frontal/ethmoidal region, and two intra-axial components located in each frontal lobe. In addition, two small fat-density lesions anterior to the component in the left frontal lobe were present, probably due to partial intraparenchymal rupture of the tumor.

Bone mineral density in multiple myeloma patients after intravenous clodronate therapy.

Bisphosphonates inhibit osteoclastic bone destruction that may be stimulated by myeloma cells. By this way, bisphosphonates carry the potential to lower the number of new pathological fractures, of hypercalcaemic events, and of intensity of bone pain as was published earlier. Clodronate has been administered orally in most clinical studies so far despite of its poor bioavailability from the gastrointestinal tract.

Analytical monitoring of the production of biodiesel by high-performance liquid chromatography with various detection methods.

Gradient elution reversed-phase high-performance liquid chromatography (RP-HPLC) was used for the determination of compounds occurring during the production of biodiesel from rapeseed oil. Individual triacylglycerols (TGs), diacylglycerols, monoacylglycerols and methyl esters of oleic, linoleic and linolenic acids and free fatty acids were separated in 25 min using a combined linear gradient with aqueous-organic and non-aqueous mobile phase steps: 70% acetonitrile+30% water in 0 min, 100% acetonitrile in 10 min, 50% acetonitrile+50% 2-propanol-hexane (5:4, v/v) in 20 min and 5 min final hold-up. Another method with a non-aqueous linear mobile phase gradient [from 100% methanol to 50% methanol+50% 2-propanol-hexane (5:4, v/v) in 15 min] was used for fast monitoring of conversion of rapeseed oil triacylglycerols to fatty acid methyl esters and for quantitation of residual TGs in the final biodiesel product.

[Levels of "waste" halothane in operating rooms at gynecologic and obstetrical clinics--preliminary results].

Introduction: Medical staff working in surgical wards of hospitals, people that work on transport or storaging of gases and liquids, employees working on gas tanks and gas installations, mechanics for anesthetic devices and employees in the process of production of these substances are professionally exposed to anesthetic gases or and fumes that are released in their working environment. It has been confirmed that there were some deviations of indicators of the liver function after a long term exposure of the medical staff (surgeons, anesthesiologists, instrument nurses and anesthetists) to halothane and it has been notified that the level of wasted-halothane in the indoor air of the surgical theaters should be measured in order to get a correct and complete evaluation of the professional risk. The term "wasted-halothane" in this research means fumes of halothane that leave a closed circle: anesthetic device--respiratory organs (patient)--indoor air of the workplace (operating room).

The value of somatosensory and motor evoked evoked potentials in pre-clinical spondylotic cervical cord compression.

Previous studies have yielded conflicting data concerning the value of evoked potential parameters in the assessment of clinical relevance of cervical cord compression in clinically "silent" cases. The aim of this study was to assess the value of somatosensory (SEP) and motor evoked potentials (MEP) in the evaluation and prediction of the clinical course, by means of a 2-year follow-up prospective electrophysiological and clinical study performed in patients with clinically "silent" spondylotic cervical cord compression. Thirty patients with MR signs of spondylotic cervical cord compression but without clinical signs of myelopathy were evaluated clinically and using SEPs and MEPs during a 2-year period.

[Hepatologic parameters in health personnel after several years of occupational exposure to anesthetic gases].

The aim of this study was to indicate necessity of establishing sensitive methods for early detection of hepatobiliary tract disorders after exposure of medical staff to anesthetic gases, as well as to follow-up working conditions in operating rooms. The examined group comprised the medical staff of the Surgical Department of the Institute of Surgery in Novi Sad. In the group of examinees levels of bilirubin in blood were increased; prevalent increase of the indirect bilirubin occurred too, while she increase of the direct bilirubin concentration was almost insignificant.

[The effect of clodronate on bone density in patients with multiple myeloma--a 2-year follow-up of therapeutic effects].

Biphosphonates are used for the treatment of hypercalcaemia as well as in normocalcaemic patients for the long-term inhibition of malignant osteolytic bone processes. In patients with multiple myelomas treated with biphosphonates in randomized studies a reduction of the number of new osteolytic foci was proved and improvement of the quality of life. The objective of the present study was to evaluate the effect of clodronat on the development of bone density in patients with multiple myeloma.

Increasing bone density in myeloma patients after the administration of clodronate.

The use of bisphosphonates in hypercalcemia is fully accepted, but the long term therapy with bisphosphonates is still controversial. The aim of our study was to evaluate the influence of clodronate on the bone density of myeloma patients. 20 patients were included in the study.

[Increased bone density in patients with multiple myeloma treated with clodronate].

The indication of bisphosphonates in hypercalcemia is fully accepted, the long term therapy with bisphosphonates is still controversial. The aim of our study was to evaluate the influence of clodronate on the bone density of myeloma patients. Twenty patients were included in the study.

Tumor response and treatment complications in radiotherapy of localized prostate cancer.

The response of primary tumor to definitive radiation therapy and treatment related morbidity has been analysed in a group of 35 patients. All of them were treated with 20 MeV photon beam to a total dose of 67 to 71 Gy to the prostate. The effect of radiotherapy to a primary tumor were evaluated by means of repeated CT examination of the tumor volume.

Effect of small doses of 252Cf on the tumour regression in cervix uteri during combined radiotherapy.

The results of a randomized study on the regression rate of the cervix uteri tumour for a group of 56 patients, investigated during and after radiotherapy with 2 Gy dose of the 252Cf neutron component applied by means of intracavitary therapy at the beginning of the therapeutic cure are presented and compared with the conventional 226Ra therapy. It was found that the tumour regression curve after 252Cf irradiation is significantly steeper than the curve of the control group. The quantitative evaluation of the results regarding the time required for a 50% regression of the original tumour shows that a group of patients treated by 252Cf needs a 27 days' cure in comparison with 40 days' cure for patients treated only by gamma radiation.

[Computer tomography in the diagnosis of persistent hyperplastic primary vitreous body].

The authors described and evaluated clinical and CT pictures of five children with persistence of hyperplastic primary vitreous body originating due to regression of embryonal hyaloid vascular system. It becomes clinically manifest especially in leucocoria, reduced globe of the eye, prolonged ciliary processi and the formation of fibrovascular changes behind the lens. CT picture is characterized by a) increased density of vitreous body, b) dense stripes going in retrolental direction and in the course of the Cloquet canal, c) microphthalmus, d) absence of calcifications and e) facultative changes on the lens and anterior chamber.

[Regression of cervix uteri neoplasms in combined radiotherapy using low dose gamma-neutron irradiation].

The authors compared the results in the regression of uterus cervix tumour after intracavital therapy with gamma-neutron irradiation by 252cf and conventional sources of radiation gamma 226Ra in the course of a combined radiotherapy procedure. On the basis of a randomized study in 20 patients for a group it became obvious that due to the irradiation of the tumour in the initial phase of therapeutic cycle by physical dose 2 Gy of neutron component of 252Cf in the point A there was an increased regression of the tumour process causing in the 6th week since the beginning of the therapy a significant difference in the size of the tumours in both groups of patients. The time period required for 50% tumour reduction from the beginning of the therapy proved to be 23 days in patients treated with the 252Cf nuclide as compared with 48 days in the group of patients after conventional therapy.

[Reoxygenation of tumors of the uterine cervix during combined radiotherapy using low dose gamma-neutron irradiation with californium-252].

A polarographic method was used to follow the changes in oxygenation of a tumour of uterus cervix after intracavital irradiation by 252Cf by a physical dose of 2 Gy, applied at the beginning of a therapeutic cycle of combined radiotherapy. The results reached are compared with the results of tumour oxygenation in the course of a conventional therapeutic procedure. It has become apparent that even after the irradiation of a tumour of uterus cervix by a small dose of gamma-neutron radiation with 252Cf there is, beginning with 2nd week of therapy, a significant reoxygenation of the tumour population.