ABSTRACT
Studies on the trend of air pollution in Tehran, Iran, as one of the most polluted metropolis in the world are scant, and today Tehran is known for its high levels of air pollutants. In this study, the trend of air pollution concentration was evaluated over the past 10 years (2004-2015). The data were collected from 22 stations of the Air Quality Control Company. Daily concentrations of CO, NO₂, SO₂, O₃, PM₁₀ were analyzed using SPSS 16 based on the statistical method, repeated measures, and intra-group test to determine the pattern of each pollutant changes. As a result of the 22 air pollution monitoring stations, NO₂ and SO₂ concentrations have been increasing over the period of 10 years. The highest anomaly is related to SO₂. The CO concentrations represent a descending pattern over the period, although there was a slight increase in 2013 and 2014. The O₃ concentrations declined in the following years. The average concentration of PM₁₀ has been rising during the period. Also we evaluated changes of each pollutant in different months and calculated the number of clean, healthy, unhealthy days for sensitive, unhealthy, very unhealthy, and dangerous groups. The study findings illustrated the necessity for larger investment in air pollution abatement. Overall, trends have been progressed to worsening, the number of healthy days has been declined and the number of unhealthy days has been increased in recent years.
Subject(s)
Air Pollutants , Air Pollution , Investments , Iran , Methods , Quality ControlABSTRACT
Studies on the trend of air pollution in Tehran, Iran, as one of the most polluted metropolis in the world are scant, and today Tehran is known for its high levels of air pollutants. In this study, the trend of air pollution concentration was evaluated over the past 10 years (2004-2015). The data were collected from 22 stations of the Air Quality Control Company. Daily concentrations of CO, NO₂, SO₂, O₃, PM₁₀ were analyzed using SPSS 16 based on the statistical method, repeated measures, and intra-group test to determine the pattern of each pollutant changes. As a result of the 22 air pollution monitoring stations, NO₂ and SO₂ concentrations have been increasing over the period of 10 years. The highest anomaly is related to SO₂. The CO concentrations represent a descending pattern over the period, although there was a slight increase in 2013 and 2014. The O₃ concentrations declined in the following years. The average concentration of PM₁₀ has been rising during the period. Also we evaluated changes of each pollutant in different months and calculated the number of clean, healthy, unhealthy days for sensitive, unhealthy, very unhealthy, and dangerous groups. The study findings illustrated the necessity for larger investment in air pollution abatement. Overall, trends have been progressed to worsening, the number of healthy days has been declined and the number of unhealthy days has been increased in recent years.
Subject(s)
Air Pollutants , Air Pollution , Investments , Iran , Methods , Quality ControlABSTRACT
Tuberculosis [TB] is a serpent disease with various pulmonary manifestations, and timely diagnosis of the disease is paramount, since delayed treatment is associated with severe morbidity, particularly in intensive care units [ICU]. Therefore, it is imperative that intensivists understand the typical distribution, patterns, and imaging manifestations of TB. To describe different manifestations of pulmonary TB in patients in the ICU. In a retrospective study, all patients with a clinical and a laboratory-confirmed diagnosis of TB who were admitted to the ICU were entered in the study. All patients had a confirmatory laboratory diagnosis of TB including positive smears. The patterns of parenchymal lesions, involved segments and presence of cavity, bronchiectasis and bronchogenic spread of the lesions with computed tomography [CT] and chest/X-ray [CXR] were recorded and analyzed. Data of 146 patients with TB were entered in the study. The most common finding in CT was acute respiratory distress syndrome [ARDS]-like radiologic manifestations [17.1%], followed by parenchymal nodular infiltration [13.6%] and cavitation [10.9%], consolidation [10.2%], interstitial involvement [9.5%], calcified parenchymal mass [8.3%], ground-glass opacities [7.5%], and pleural effusion or thickening [6.9%]. Radiologic evidence of lymphadenopathy was seen in up to 43% of adults. Miliary TB was observed in 2.3% of patients, mostly in those older than 60 years of age. ARDS-like [64.5%] manifestations on CT and miliary TB [85.5%] had the highest mortality rates among other pulmonary manifestations. ARDS, interstitial involvement, and Parenchymal nodular infiltration are the most common manifestations of pulmonary TB. Various features of TB in ICU patients could be misleading for intensivists
ABSTRACT
The objective of this study was to determine the prevalence and incidence of venous thromboembolism among critically ill medical surgical patients. In this cross sectional and retrospective study, we observed 243 patients who were first admitted at the intensive care unit. Patients who were diagnosed with deep venous thrombosis or embolism either by clinical or paraclinical methods were enrolled. Among 243 patients of ICU ward 12 cases of them were confirmed to have thromboembolism [prevalence of 9.4%]. But the incidence of venous thromboembolism after 48 hour of ICU admission was 5.2% [6 cases]. Among 6 VTE cases 3 of them didn't receive any anticoagulant prophylaxis, 2 patients received LDUH 5000 unit twice a day and one patient received LMWH 60 mg daily but all developed VTE although receiving prophylaxis. We found that the prevalence of proximal lower limb DVT among medical-surgical critically ill patients remaining in the ICU for >/= 3 days is about 9.4% and the incidence of that is about 5.2%. Further studies should be performed in order to assess the benefits and risks of venous thromboprophylaxis in Iranian patients