Dragan Bogdanovic

Risk factors related to the failure of venous leg ulcers to heal with compression treatment

BACKGROUND Compression therapy is the most widely used treatment for venous leg ulcers and it was used in different forms for more than 400 years. Published healing rates of venous ulcers obtained with compression therapy vary widely from 40-95%. According to numerous studies, it has been suggested that the application of external pressure to the calf muscle raises the interstitial pressure resulting in improved venous return and reduction in the venous hypertension. Several risk factors have been identified to be correlated with the failure of venous leg ulcers to heal with compression therapy (longer ulcer duration; large surface area; fibrinous deposition present on >50% of the wound surface and an Ankle Brachial Pressure Index (ABPI) of <0.85. METHODS An open prospective single-center study was performed in order to determine possible risk factors associated with the failure of venous ulcers to heal when treated with multi-layer high compression bandaging system for 52 weeks. In the study, 189 patients (101 women, 88 men; mean age 61 years) with venous leg ulcers (ulcer surface >5 cm(2); duration >3 months) were included. The study excluded patients with arterial disease (ABPI <0.8), heart insufficiency with ejection fraction (EF) <35, pregnancy, cancer disease, rheumatoid arthritis, and diabetes. Based on clinical opinion and available literature, the following were considered as potential risk factors: sex, age, ulceration surface, time since ulcer onset, previous operations, history of deep vein thrombosis, body mass index (BMI), reduction in calf circumference >3 cm during the first 50 days of treatment, walking distance during the day <200 meters, calf:ankle circumference ratio <1.3, fixed ankle joint, history of surgical wound debridement, >50% of wound covered with fibrin, depth of the wound >2 cm. RESULTS Within 52 weeks of limb-compression therapy, 24 (12.7%) venous ulcers had failed to heal. A small ulceration surface (<20 cm(2)), the duration of the venous ulcer <12 months, a decrease in calf circumference of more than 3 cm, and emergence of new skin islets on >10% of wound surface during the first 50 days of treatment were favorable prognostic factors for ulcer healing. A large BMI (>33 kg/m(2)), short walking distance during the day (<200 m), a history of wound debridement, and ulcers with deepest presentation (>2 cm) were indicators of slow healing. Calf:ankle circumference ratio <1.3, fixed ankle joint, and reduced ankle range of motion were the only independent parameters associated with non-healing (P < .001). CONCLUSION The results obtained in this study suggest that non-healing venous ulcers are related to the impairment of the calf muscle pump.

The influence of different sub-bandage pressure values on venous leg ulcers healing when treated with compression therapy

BACKGROUND Venous leg ulcers (VLU) have a huge social and economic impact. An estimated 1.5% of European adults will suffer a venous ulcer at some point in their lives. Despite the widespread use of bandaging with high pressure in the treatment of this condition, recurrence rates range between 25% to 70%. Numerous studies have suggested that the compression system should provide sub-bandage pressure values in the range from 35 mm Hg to 45 mm Hg in order to achieve the best possible healing results. METHODS An open, randomized, prospective, single-center study was performed in order to determine the healing rates of VLU when treated with different compression systems and different sub-bandage pressure values. One hundred thirty-one patients (72 women, 59 men; mean age, 59-years-old) with VLU (ulcer surface >3 cm(2); duration >3 months) were randomized into three groups: group A - 42 patients who were treated using an open-toed, elastic, class III compression device knitted in tubular form (Tubulcus, Laboratoires Innothera, Arcueil, France); group B - 46 patients treated with the multi-component bandaging system comprised of Tubulcus and one elastic bandage (15 cm wide and 5 cm long with 200% stretch, Niva, Novi Sad, Serbia); and group C - forty-three patients treated with the multi-component bandaging system comprised of Tubulcus and two elastic bandages. Pressure measurements were taken with the Kikuhime device (TT MediTrade, Soro, Denmark) at the B1 measuring point in the supine, sitting, and standing positions under the three different compression systems. RESULTS The median resting values in the supine and standing positions in examined study groups were as follows: group A - 36.2 mm Hg and 43.9 mm Hg; group B - 53.9 mm Hg and 68.2 mm Hg; group C - 74.0 mm Hg and 87.4 mm Hg. The healing rate during the 26-week treatment period was 25% (13/42) in group A, 67.4% (31/46) in group B, and 74.4% (32/43) in group C. The success of compression treatment in group A was strongly associated with the small ulcer surface (<5 cm(2)) and smaller calf circumference (CC; <38 cm). On the other hand, compliance in group A was good. In groups B and C, compliance was poor in patients with small CC, but the healing rate was high, especially in patients with large ulcers and a large CC (>43 cm). CONCLUSION The results obtained in this study indicate that better healing results are achieved with two or multi-component compression systems than with single-component compression systems and that a compression system should be individually determined for each patient according to individual characteristics of the leg and CC. Target sub-bandage pressure value (B1 measuring point in the sitting position) of the compression system needed for the ulcer healing could be determined according to a simple formula, CC + CC/2.

THE INFLUENCE OF MARITAL STATUS ON EPIDEMIOLOGICAL CHARACTERISTICS OF SUICIDES IN THE SOUTHEASTERN PART OF SERBIA

BACKGROUND The support of close persons is a protective factor in the suicide epidemiology. The aim of this paper is to determine if there are differences between epidemiological characteristics of the suicides committed by married people in relation to singles. METHODS In order to determine epidemiological characteristics of suicide among married and single people in the southeastern Serbia 628 suicides committed from 1995 to 2002 among persons 20 years of age and over were analysed. To compare suicide rates between married and single persons chi2 test was performed. RESULTS From 628 registered suicides, 188 were performed by women, and 440 by men. The average annual suicide rate among males was 24.1 per 100,000 and among females it was 9.9. The highest rates were among widowed (139.0) and divorced men (63.2). The highest risk factor for suicide was to be widowed (men: RR=8.35; women: RR=2.75). The suicide trend among women, both married and single has been declining, whilst among males it has been on significant increase. Seasonality of suicides, weekly and daily distribution had a small influence on the epidemiological characteristics of suicides. Married women committed more suicides by poisoning than single women (p=0.02). In both groups, the most frequent way is hanging. CONCLUSION Though marital status plays important role in an increasing rates of suicide, time and the way of its happening, this role is not decisive. Single people are very vulnerable and the time and way of suicide show that their reasons are more serious than among married ones.

Black smoke air pollution and daily non-accidental mortality in Nis, Serbia

The short-term effects of ambient black smoke concentrations on total non-accidental, cardiovascular and respiratory mortalities in Nis, during the 2000-2003 period, were investigated.Daily measurements for black smoke (BS), as well as the daily number of deaths have been collected. Generalised linear models extending Poisson regression were applied. The e.ects of time trend, seasonal variations, days of the week, temperature, humidity and air pressure were adjusted.The per cent increase in the daily number of total deaths associated with a 10 μg/m3 increase in BS was 1.13% (0.08–2.20%). The e.ect size was slightly higher for cardiovascular mortality (1.25%, 95% CI: 0.53–1.97%). There was no signi.cant association between air pollution and respiratory mortality.These results indicate that current levels of ambient BS have signi.cant e.ects on total and cardiovascular mortalities in Nis.

Air quality monitoring in NIS (SERBIA) and health impact assessment

The aim of this study is to indicate the significance of air quality monitoring and to determine the air quality fields for the assessment of air pollution health effects, with special attention to risk population. Radial basis function network was used for air quality index mapping. Between 1991 and 2005, on the territory of Nis, several epidemiological studies were performed on risk groups (pre-school children, school children, pregnant women and persons older than 65). The total number of subjects was 5837. The exposed group comprised individuals living in the areas with unhealthy AQI, while the control group comprised individuals living in city areas with good or moderate AQI. It was determined that even relatively low levels of air pollution had impact on respiratory system and the occurrence of anaemia, allergy and skin symptoms.

Placental growth factor and placental protein 13 in patients with Balkan endemic nephropathy, a worldwide disease.

Abstract Background: Balkan endemic nephropathy (BEN) is a chronic tubulointerstitial kidney disease occurring in people living in along the tributaries of the Danube River. The aim of the study was to determine serum level and urinary excretion of placental growth factor (PlGF) and placental protein 13 (PP13) in patients with BEN. Methods: Thirty patients with BEN from the South Morava River region of Serbia and 18 controls were studied. Age of patients was 74 yr (53–87) and 73 yr (66–83) in controls. Results: In patients with BEN, serum creatinine was significantly higher than in controls (129.7 vs. 83.2 µmol/L, respectively), but GFR was lower in patients than in controls (40.7 vs. 54.6 mL/min). Serum PlGF was significantly higher in BEN patients than in controls (9.90 vs. 6.80 pg/mL), urinary excretion being significantly lower in patients (0.20 vs. 0.90 pg/mmol creat.). Serum PP13 was significantly lower in BEN patients (208.2 vs. 291.0 pg/mL). Urinary excretion of PP13 was also significantly lower in BEN patients than in controls (32.5 vs. 182.5 pg/mmol creat). In multivariate regression analysis BEN, sex and age were significant determinants of the observed changes in PlGF and PP13. Conclusion: Important changes of PlGF and PP13 in patients with BEN were demonstrated, where kidney disease, female sex, and the age have been significant determinants.