OBJECTIVE: Nosocomial infections pose a significant public health concern, impacting over 100 million people worldwide annually. Within this research, we investigated heparin nebulization through the endotracheal tube and its effect on preventing blockage due to clots and mucus plugs compared to normal saline. METHODS: A double-blind clinical experiment was done on a cohort of 40 pneumonia patients who were intubated and hospitalized in the intensive care unit (ICU) at Imam Khomeini Hospital in Ahvaz, Iran. The individuals were randomly assigned to two groups of 20 patients using a random allocation technique. The initial cohort was administered 5000 IU of heparin diluted in 4 ccs of 0.9% normal saline every eight hours via a nebulizer through a tracheal tube. In contrast, the second cohort was given 5 ccs of normal saline as a nebulizer through a tracheal tube. The study compared the incidence of tracheal tube obstruction caused by mucus plug or clot, the occurrence of patient hypoxia resulting in emergency tracheal tube replacement, and the frequency of emergency tracheal tube suction due to partial obstruction caused by mucus plug in both the heparin and saline groups. RESULTS: According to our data, the number of patients in the heparin group who could avoid the need for emergency tracheal tube replacement owing to blockage was more significant than in the ordinary saline group (P=0.013). Heparin was significantly correlated with the number of times emergency suction was required to remove a tracheal tube occlusion (P=0.01). Heparin had no significant effect on coagulation factors (international normalized ratio [INR], platelet [PLT], and partial thromboplastin time [PTT]), Acute Physiology and Chronic Health Evaluation (APACHE) score, pneumonia severity index (PSI), saturation of patients, or tracheal tube secretions. There was no statistically significant difference in total time spent in the intensive care unit (P=0.91). CONCLUSIONS: Further studies are suggested to determine the effect of heparin nebulization on preventing endotracheal tube obstruction due to clots and mucus plugs in intubated ICU patients.
Background: Epidemic thunderstorm asthma is an observed increase in cases of acute bronchospasm following thunderstorms. This study aimed to compare the frequency of obstructive airway disease or bronchial hyperresponsiveness in subjects with thunderstorm-associated respiratory symptoms with subjects with similar symptoms presented at other times. Methods: A cross-sectional study from June to November of 2013 was conducted on subjects with thunderstorm-associated respiratory symptoms living in Ahvaz City, Iran. Thunderstorm-associated subjects were presented with asthmatic symptoms in thunderstorms, and other patients presented with similar symptoms at other times. Baseline spirometry was performed on patients to examine the presence of obstructive airway disease. In all patients with normal spirometry, a provocation test was applied. A comparison of qualitative and quantitative variables was made using the Chi-square and independent t test, respectively. All analyses were carried out using SPSS Statistics Version 22. A P value less than 0.05 was considered statistically significant. Results: Out of 584 subjects, 300 and 284 participants were in thunderstorm-associated and non-thunderstorm-associated groups, respectively. After the final analysis, 87 (30.6%) and 89 (33.3%) of the thunderstorm-associated subjects and non-thunderstorm-associated group, respectively, had pieces of evidence of airflow limitation (P=0.27). Among the patients with normal spirometry, 161 (81.72%) of the thunderstorm-associated patients and 100 (56.17%) patients of the non-thunderstorm-associated symptoms group had a positive methacholine challenge test result (P<0.001). Conclusion: Most of the patients with thunderstorm-associated respiratory symptoms had no obvious evidence of airflow limitation in spirometry.
Asthma , Pulmonary Disease, Chronic Obstructive , Humans , Cross-Sectional Studies , Methacholine Chloride , Asthma/diagnosis , Asthma/epidemiology , Bronchial Provocation Tests , Pulmonary Disease, Chronic Obstructive/epidemiology
Phosphodiesterase inhibitors elevate the levels of cyclic adenosine monophosphate and cyclic guanosine monophosphate, which have been associated with various anti-inflammatory effects that can help alleviate asthma symptoms. This study aims to assess the impact of Tadalafil, a selective phosphodiesterase inhibitor, on pulmonary function in patients with asthma. This study was a randomized, double-blind clinical trial conducted in 2021 at Imam Khomeini Hospital in Ahvaz, Iran. The study enrolled 44 patients with severe asthma, who were divided equally into a Tadalafil group and a placebo group. The Tadalafil group received 20 mg/day of Tadalafil, while the placebo group received a placebo at the same dose. The patients' spirometry tests, asthma quality of life questionnaire, 6-minute walk distance, and quality of life were measured at the beginning of the study and one month later. The study results indicated that there was no statistically significant difference between the Tadalafil group and the placebo group in terms of pulmonary parameters (p>0.05). Furthermore, the scores for patients' quality of life (p=0.167) and the 6-minute walk test (p=0.148) at the end of the study did not show any statistically significant improvement compared to the placebo group. Results showed that the use of Tadalafil (20 mg) once daily for one month in patients with severe asthma did not affect clinical and laboratory outcomes.
Background: COVID-19 can lead to severe acute respiratory syndrome so that some patients need to be admitted to the Intensive Care Unit (ICU). The aim of the current study is to investigate the frequency of demographic, laboratory and imaging findings and type of treatment and their relationship with disease outcomes in patients with COVID-19. Material and Methods: This prospective cross-sectional study was conducted on all patients with COVID-19 who were admitted in the ICU of Razi Hospital in Ahvaz, Iran from January 20 to February 20, 2021. Patient information including demographic features, laboratory and imaging findings and clinical outcomes was recorded. Results: One hundred and thirty-three patients were recruited in the present study, out of which 74 patients (55.6%) were males and 59 patients (44.4%) were females. The overall mortality rate of patients was 35.3% (47 patients) and was higher in patients over 65 years of age. There was a significant difference in terms of thrombocytopenia (P value: 0.001), lymphopenia (P value: 0.004), progression of lung involvement in imaging, shock, disseminated intravascular coagulation (DIC), sepsis and receiving invasive respiratory support in living and deceased patients (P value < 0.001). Furthermore, the difference in life status and the length of in-ICU stay in patients with hyperkalemia and renal failure was statistically significant (P value = 0.033, P value < 0.001 respectively). Conclusion: Mortality rate of patients with COVID- 19 admitted to ICU is generally high. According to the findings of this study, thrombocytopenia, lymphopenia, hyperkalemia and AKI are laboratory disorders associated with increased mortality. Moreover, the progression of pulmonary involvement in imaging, shock, DIC, sepsis, and need to invasive respiratory support is associated with low survival of patients.
Introduction: The amount of fibers in the lungs is considered to reflect the cumulative intensity of past asbestos exposure, and bronchoalveolar lavage (BAL) has been proposed to be a good indicator of the presence and quantity of asbestos particles in the lungs. This study evaluated the asbestos concentration in BAL fluids of asbestos-exposed and unexposed pulmonary patients and the environment of Ahvaz city. Methods: This prospective study was conducted on 80 patients underwent diagnostic fiberoptic bronchoscopy referred to Imam Khomeini Hospital in Ahvaz, Iran, in 2019. Patients with Lung diseases were divided into three groups based on CT scan results: normal (n = 32), lung cancer (n = 40) and Interstitial lung disease (n = 8). The analysis of asbestos fiber concentration in BAL fluid was carried out by Scanning Electron Microscope (SEM). Results: The positive asbestos test was detected in 69% of all subjects, including 64% of whom had asbestos-related jobs and 74.5% of those with non-related jobs (p = 0.240). The concentrations of asbestos fiber in the BAL in normal patients, lung cancer and interstitial fibrosis (ILD) were 8.13 ± 5.38, 9.66 ± 7.30 and 6.31 ± 1.98 f/ml, respectively (P = 0.492). There was no significant difference between the asbestos levels and exposure history (P = 0.877). The mean concentration of asbestos in the ambient air during the current year was 2.69 ± 0.57 f/ml (2.26-3.70), and the correlation between asbestos levels in BAL and the air was not significant (r = 0.147; P = 0.243). Conclusions: The exposure of different occupational and non-occupational groups to this carcinogenic substance indicates the need for environmental and individual control measures to reduce and prevent asbestos exposure.
Background: There is no definitive treatment for COVID-19. Hemoperfusion and plasmapheresis have only been studied in a few cases of COVID-19. In this study, plasmapheresis-hemoperfusion and current treatment for COVID-19 patients were compared for mortality. Methods: In this cross-sectional study, 103 patients with COVID-19 underwent hemoperfusion, plasmapheresis, and conventional medical treatment in educational hospitals in Ahvaz, Iran. A census method was used to include the patients in the study. The data from the hospital file were used to complete a checklist containing demographic information, clinical findings, and paraclinical findings for all patients. Results: There was not a statistically significant difference (P-value = 0.051) between the plasmapheresis group (78.8%), the hemoperfusion group (71.9%), and the current treatment group (52.6%) in mortality rates. Hemoperfusion had a median survival time of 18.9 days, plasmapheresis had a median survival time of 16.9 days, and current treatment had a median survival time of 13.5 days. In terms of patient survival time, there was no significant difference (P-value = 0.181). Multiple regression results showed that death rates in the hemoperfusion (P = 0.393) and plasmapheresis (P = 0.073) groups were not statistically different from those in the current treatment group. Conclusion: As a result of this study, there were no differences between the treatment groups in regard to death rates or patient survival times.
BACKGROUND: Asthma and allergic complications are the most common chronic disorders in children and adolescents. This study aimed to determine the prevalence and severity of asthma, allergic rhinitis, eczema among schoolchildren, and some related risk factors. METHODS: The cross-sectional study was performed in 2019 and involved 4000 students aged 6-7 years and 4000 students aged 13-14 years (both girls and boys) from urban schools in Khuzestan Province, southwestern Iran. We used the multi-stage sampling method. Data were collected using the Persian version of the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire. RESULTS: The prevalence of current wheeze, wheeze ever and asthma ever in the age group of 6-7 years was 3.8, 4.5, and 1.8%, respectively; in the age group of 13-14 years, it was 4.4, 5.9, and 3.4, respectively. In terms of gender, males (4.9, 6.0, and 2.7 percent, respectively) had substantially higher rates of current wheeze, wheeze ever, and asthma ever compared to the girls (2.8, 3.6, and 2.0 percent, respectively) (p < 0.001). The prevalence of rhinitis, Hay fever, and eczema among young people was 5.3%, 3.5%, and 1.0%, respectively. Current wheeze was more common in children with allergic rhinitis in the last 12 months (30.3% vs. 2.7%, p < 0.001), Hay fever (32.8% vs. 0.3%, p < 0.001) and eczema (27.8% vs 3.8%, p < 0.001), compared to children who did not. CONCLUSIONS: The prevalence and severity of asthma symptoms were significantly associated with allergic rhinitis, eczema, and gender.
Asthma , Eczema , Hypersensitivity , Rhinitis, Allergic, Seasonal , Rhinitis , Adolescent , Asthma/etiology , Child , Cross-Sectional Studies , Eczema/epidemiology , Female , Humans , Hypersensitivity/epidemiology , Iran/epidemiology , Male , Prevalence , Respiratory Sounds/etiology , Rhinitis/epidemiology , Rhinitis, Allergic, Seasonal/complications , Rhinitis, Allergic, Seasonal/diagnosis , Rhinitis, Allergic, Seasonal/epidemiology , Surveys and Questionnaires
Differentiation between exudative and transudative pleural effusion is sometime problematic. This study aimed to evaluate the diagnostic value of C-reactive protein (CRP) in differentiation of exudative and transudative pleural effusion. This is an analytical epidemiologic cross-sectional study that evaluates the role of CRP in differentiating transudative and exudative pleural effusion. Patients were divided into two groups of exudates and transudates, based on Light's criteria. The pleural effusion CRP levels were compared between the two groups. SPSS software version 16 was used for statistical analysis. The significance level was considered p<0.05. A total of 169 patients with pleural effusion enrolled in the study. Based on Light's criteria, 108 patients (63.9%) had exudative pleural effusion and 61 (36.1%) had transudative pleural effusion. The level of CRP in the pleural fluid of patients in the exudative and transudative groups was 13.3±37.1 and 3.5±4.3mg/dl, respectively (p=0.008). The 3.31 mg/dl cut-off point of CRP level of pleural effusion had the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of 96.3%, 72.1%, 86% and 91.7% respectively. The results obtained in our study shows that the level of CRP in the effusion fluid can be helpful in differentiating exudative from transudative pleural effusions.
C-Reactive Protein , Pleural Effusion , Humans , Cross-Sectional Studies , Exudates and Transudates , Pleural Effusion/diagnosis , Biomarkers
Colchicine has shown clinical benefits in the management of COVID-19 via its anti-inflammatory effect. However, the exact role of colchicine in COVID-19 patients is unknown. The current clinical trial was performed on 202 patients with moderate to severe COVID-19. Patients were randomly assigned in a 1:1 ratio to receive up to a 3-day course of 0.5 mg colchicine followed by a 12-day course of 1 mg colchicine in combination with standard care or a 15-day course of standard care. Among 202 randomized patients, 153 completed the study and received colchicine/standard care or continued standard care (M age, 54.72 [SD, 15.03] years; 93 [63.1%] men). On day 14, patients in the colchicine/standard care group had significantly higher odds of a better clinical status distribution on chest CT evaluation (p = .048). Based on NYHA classification, the percentage change of dyspnea on day 14 between groups was statistically significant (p = .026), indicating a mean of 31.94% change in the intervention group when compared with 19.95% in the control group. According to this study, colchicine can improve clinical outcomes and reduce pulmonary infiltration in COVID-19 patients if contraindications and precautions are considered and it is prescribed at the right time and in appropriate cases.
COVID-19 , Colchicine/adverse effects , Humans , Male , Middle Aged , Prospective Studies , SARS-CoV-2 , Treatment Outcome
Climate change may be associated with human morbidity and mortality through direct and indirect effects. Ahvaz is one of the hottest cities in the world. The aim of this study was to investigate the relation between physiological Equivalent Temperature (PET) and non-accidental, cardiovascular and respiratory disease mortality in Ahvaz, Iran. Distributed Lag Non-linear Models (DLNM) combined with quasi-Poisson regression were used to investigate the effect of PET on death. The effect of time trend, air pollutants (NO2, SO2 and PM10), and weekdays were adjusted.The results showed that in cold stress [1st percentile of PET (2.7 °C) relative to 25th percentile (11.9 °C)] the risk of total respiratory mortality, respiratory mortality in men, and mortality in people under 65 year olds, significantly decreased in the cumulative lags of 0-2, 0-6 and 0-13; but the risk of respiratory mortality increased in the elderly and in the final lags. In contrast, heat stress [99th percentile of PET (44.9 °C) relative to 75th percentile (43.4 °C)] significantly increased the risk of total cardiovascular mortality (CVD), cardiovascular mortality in men, ischemic heart disease and cerebrovascular disease mortality in lags 0 and 0-2. It seems that high PET values increase the risk of cardiovascular mortality, while low PET values increase respiratory mortality only among the elderly in Ahvaz.
Air Pollutants , Air Pollution , Cardiovascular Diseases , Respiration Disorders , Respiratory Tract Diseases , Aged , Air Pollutants/analysis , Air Pollution/analysis , Cardiovascular Diseases/epidemiology , Hot Temperature , Humans , Iran/epidemiology , Male , Respiration Disorders/epidemiology , Respiratory Tract Diseases/epidemiology , Temperature
Preliminary studies also show that many of the fatalities of COVID-19 are due to over-activity of the immune system, and photobiomodulation (PBM) therapy mainly accelerates wound healing and reduces pain and inflammation. Therefore, this systematic review and meta-analysis was conducted to evaluate the probable effect of the PBM therapy on the lung inflammation or ARDS and accelerate the regeneration of the damaged tissue. We systematically searched major indexing databases, including PubMed/Medline, ISI web of science (WOS), Scopus, Embase, and Cochrane central, using standard terms without any language, study region, or type restrictions. Of the 438 studies found through initial searches, 13 met the inclusion criteria. After applying the exclusion criteria, the main properties of 13 articles on 384 animals included in this meta-analysis with a wide range of species include rat (n = 10) and rabbit (n = 3). The analysis revealed that PBM therapy reduced TNFα (SMD:-3.75, 95% CI: -4.49, -3.02, P < 0.00001, I2 = 10%), IL-1ß (SMD:-4.65, 95% CI: -6.15, -3.16, P < 0.00001, I2 = 62%), and IL-6 (SMD:-4.20, 95% CI: -6.42, -1.97, P = 0.0002, I2 = 88%) significantly compared with the model controls. Hence, PBM therapy increased IL-10 significantly compared with the model controls (SMD:-4.65, 95% CI: -6.15, -3.16, P < 0.00001, I2 = 62%). PBM therapy also reduced MPO activity (SMD:-2.13, 95% CI: -3.38, -0.87, P = 0.0009, I2 = 64%) and vascular permeability (SMD:-2.59, 95% CI: -4.40, -0.77, P = 0.0052, I2 = 71%) in the lung using the Evans blue extravasation technique significantly compared with the model controls. This systematic review and meta-analysis revealed that the PBM therapy does utilize beneficial anti-inflammatory effect, modulation of the immune system, lung permeability, or bronchoalveolar lavage on lung damage in both animal models and clinical studies. However, animal model and clinical studies appear limited considering the quality of the included evidences; therefore, large clinical trials are still required.
COVID-19 , Low-Level Light Therapy , Pneumonia , Animals , Inflammation , Lung , Rabbits , Rats
BACKGROUND: From the beginning of the COVID-19 pandemic, the development of infrastructures to record, collect and report COVID-19 data has become a fundamental necessity in the world. The disease registry system can help build an infrastructure to collect data systematically. The study aimed to design a minimum data set for the COVID-19 registry system. METHODS: A qualitative study to design an MDS for the COVID-19 registry system was performed in five phases at Ahvaz University of Medical Sciences in Khuzestan Province in southwestern Iran, 2020-2021. In the first phase, assessing the information requirements was performed for the COVID-19 registry system. Data elements were identified in the second phase. In the third phase, the MDS was selected, and in the four phases, the COVID-19 registry system was implemented as a pilot study to test the MDS. Finally, based on the experiences gained from the COVID-19 registry system implementation, the MDS were evaluated, and corrections were made. RESULTS: MDS of the COVID-19 registry system contains eight top groups including administrative (34 data elements), disease exposure (61 data elements), medical history and physical examination (138 data elements), findings of clinical diagnostic tests (101 data elements), disease progress and outcome of treatment (55 data elements), medical diagnosis and cause of death (12 data elements), follow-up (14 data elements), and COVID-19 vaccination (19 data elements) data, respectively. CONCLUSION: Creating a standard and comprehensive MDS can help to design any national data dictionary for COVID-19 and improve the quality of COVID-19 data.
COVID-19 , COVID-19 Vaccines , Humans , Pandemics , Pilot Projects , Registries , SARS-CoV-2
Background: Impulse oscillometry (IOS) is a method that does not depend on the cooperation of the patient and can detect small airway diseases with higher sensitivity than spirometry. However, the clinical application value of IOS in the screening of patients exposed to risk factors COPD and early diagnosis remains unclear. The aim of this study is to evaluate diagnostic sensitivity of IOS in the early detection of patients exposed to risk factors COPD. Methods: A prospective cross-sectional study was conducted in Rasoul Akram Hospital, Tehran, Iran, from 2013 to 2015. 28 patients with COPD risk factors and normal spirometry participated in the study. The IOS was performed. We obtained the respiratory resistance and impedance of 5 Hz (R5) and 20 Hz (R20) and 5 Hz (Z5), respectively. The data were analyzed using SPSS version 17 using Chi-square and two independent sample t-test. Spearman correlation test was used to measure the correlation of oscillometry parameters in the diagnosis of COPD. P-value <0.05 was considered significantfor all statistical analyses. Results: The mean patient age was 55.50±11.27 years. In this study, the sensitivity of Z5, R5, and R20 was respectively 28.5%, 25%, and 31.5%. All oscillometry parameters were significantly correlated with each other but none of the oscillometry parameters showed significant correlations with FEV1/FVC (rZ5=0.018, rR5=0.082, rR20=0.041 and PZ5=0.932, PR5=0.711, P R20=0.850). According to the results, only 9 patients (32.5%) with normal values of FEV1/FVC had abnormal values of oscillometry. Conclusion: IOS has a low sensitivity and cannot be used in the screening of early-stage chronic obstructive pulmonary disease.
Objectives: In recent years, there has been a clear trend of increasing allergic diseases especially in children, and developing countries are no exception. Thepresentstudy sought to determine the risk factors associated with wheezing among school children aged 6-7 and 13-14 years living in Khuzestan Province, Iran. Study design: Cross-sectional. Methods: Data for this cross-sectional study is the history of wheeze in the last 12 months. The participants included 6-7- and 13-14-year-old girls and boys studying in urban schools in Khuzestan Province in 2019. We collected the data using the multi stage sampling technique as suggested in the International Study of Asthma and Allergies in Childhood (ISAAC). The research reviewed the literature and consulted experts to collect the risk factors for demographic and clinical information, environmental exposure and lifestyle. Results: Eight thousand questionnaires were handed out to both age groups, of which 7344 were completed. Two hundred ninety-nine (4.1 %) of the participants had current wheeze. Three-point four percent (124 individuals) in the 6-7 year age group and 4.8 % in the 13-14-year-old age group had current wheezing. The results of the logistic regression model suggest that the most significant risk factors associated with the chance of developing current wheeze in the both age groups are: being male (OR: 1.46, 95 % CI: 1.12-1.88), being from employed mother families (OR: 1.50, 95 %, CI:1.05-2.08), property ownership (OR:1.36, 95 %, CI:1.04-1.79) bugs in the property (OR: 1.29, 95 %, CI:0.99-1.70) mold in the property (OR: 1.75, 95 %, CI:1.12-2.76), pet(s) in the student's bedroom (OR: 1.75, 95 %, CI: 0.97-3.14), a family history of asthma and allergic diseases (OR: 2.20, 95 %, CI: 1.69-2.87), tobacco smoke exposures in the property (OR: 1.43, 95 %, CI:1.04-1.96), having allergic rhinitis (OR: 7.86, 95 % CI: 5.89-10.50) and eczema (OR: 3.85, 95 % CI: 2.10-7.08). Conclusions: Families are suggested to adopt strategies to reduce exposure to outdoor air pollutants and contain indoor allergens. More studies are necessary to further explore the effects of modifying and changing these risk factors.
Background: The aim of this study is to evaluate the clinical pattern of thunderstorm asthma (TA) and the possible environmental hypotheses involved in the escalation of these epidemics. Materials and Methods: This retrospective descriptive study examined patients with respiratory problems referred to the clinics and emergency departments in Ahvaz, Iran during 2013-2016 periods following the first episodes of rainfall in autumn. The seasonal profile of airborne pollens and fungal spores in Ahvaz were characterized and clinical and spirometry findings of 443 patients were evaluated. Results: Of 56,000 people referred to the emergency department due to respiratory problems associated with the first rainfall in Khuzestan province, 91.4% displayed asthma-like symptoms and 71.3% had a history of allergic rhinitis. According to the results of spirometry test 38%, 52.9%, and 9.1% of patients had normal, obstructive, and restrictive patterns, respectively. Our results highlight the importance of allergic rhinitis as risk factors of TA epidemics. In terms of pollen, seasonal pollen integral was much higher in autumn than in winter. Conclusion: Our results highlight the importance of seasonal allergy and rhinitis as risk factors for thunderstorm asthma epidemics.
Acrocyanosis and digital necrosis, which caused by microangiopathic and immunothrombosis phenomenon, may accompanied by microvascular involvement of other organs. Therefore, this finding can play a prognostic role in covid-19 outcome.
There are limited studies on the relation between short-term exposure to air pollutants and the risk of deep venous thrombosis (DVT). The aim of this study was to determine the relation between the concentration of these pollutants and the risk of hospital admissions due to DVT in Ahvaz, which is one of the world's highly polluted cities. Daily data on pollutants including O3, NO, NO2, SO2, CO, PM10, and PM2.5and DVT hospital admissions were collected from2008until 2018. Quasi-Poisson regression combined with linear distributed lag models; adjusted for trend, seasonality, temperature, relative humidity, weekdays, and holidays were used to assess the relation between the daily average of air pollutants and hospital admission for DVT. The results showed that there was a significant increase in hospital admissions due to DVT in the total, men, women, and elderly populations in relation to NO and NO2. There was also a significant increase in DVT hospital admissions in the male and ≤60 years populations related to PM10; and among the female and ≤60 years old populations, related to PM2.5. Finally, the results showed that there were significant positive associations between SO2 and CO exposure and the incidence of DVT hospital admissions among men and women, respectively. The results of this study show the possible effect of short-term exposure to air pollution on the risk of DVT. Further studies are required to investigate whether direct interventions through industry and government policy may alter the impact of specific pollutants in order to alter the incidence of DVT and other identified health complications.
Background and Aim: Although air pollution is a serious problem in Ahvaz, the association between air pollution and respiratory diseases has not been studied enough in this area. The aim of this study was to determine the relation between short-term exposure to air pollutants and the risk of hospital admissions due to asthma, COPD, and bronchiectasis in Ahvaz. Methods: Hospital admissions data and air pollutants including O3, NO, NO2, SO2, CO, PM10, and PM2.5 were obtained from 2008 to 2018. Adjusted Quasi-Poisson regression with a distributed lag model, controlled for trend, seasonality, weather, weekdays, and holidays was used for data analysis. Results: The results showed a significant increase in hospital admissions for asthma (RR=1.004, 95% CI: 1.002-1.007) and COPD (RR=1.003, 95% CI: 1.001-1.005) associated with PM2.5. PM10 was associated with increased hospital admissions due to bronchiectasis in both genders (Men: RR=1.003, 95% CI: 1.001-1.006) (Female: RR=1.003, 95% CI: 1.000-1.006). NO2 was also associated with an increased risk of hospital admissions for asthma (RR=1.040, 95% CI: 1.008-1.074) and COPD (RR=1.049, 95% CI: 1.010-1.090). SO2 was associated with the risk of hospital admissions of asthma (RR=1.069, 95% CI: 1.017-1.124) and bronchiectasis (RR=1.030, 95% CI: 1.005-1.056). Finally, CO was associated with COPD (RR=1.643, 95% CI: 1.233-2.191) and bronchiectasis (RR=1.542, 95% CI: 1.035-2.298) hospital admissions. Conclusion: Short-term exposure to air pollutants significantly increases the risk of hospital admissions for asthma, COPD, and bronchiectasis in the adult and elderly population.
Air Pollutants/adverse effects , Air Pollution/adverse effects , Asthma/epidemiology , Bronchiectasis/epidemiology , Hospitalization , Inhalation Exposure/adverse effects , Pulmonary Disease, Chronic Obstructive/epidemiology , Age Factors , Asthma/diagnosis , Asthma/therapy , Bronchiectasis/diagnosis , Bronchiectasis/therapy , Carbon Monoxide/adverse effects , Humans , Iran/epidemiology , Nitric Oxide/adverse effects , Nitrogen Dioxide/adverse effects , Particulate Matter/adverse effects , Pulmonary Disease, Chronic Obstructive/diagnosis , Pulmonary Disease, Chronic Obstructive/therapy , Risk Assessment , Risk Factors , Sulfur Dioxide/adverse effects , Time Factors
BACKGROUND AND OBJECTIVES: Pleuroscopy is an appropriate technique for visualization and biopsy of the pleural lesions, performed by two different techniques. In this study, we aimed to investigate the diagnostic accuracy of semi-rigid and rigid pleuroscopy in patients with lymphocyte dominant exudative pleural effusion. MATERIALS AND METHODS: In this study, patients with lymphocyte dominant pleural effusion with negative results for tuberculosis who referred to Imam Khomeini Hospital, Ahvaz, Iran; from 2018 to 2019 were selected by census method and randomized to undergo semi-rigid or rigid pleuroscopy (30 in each group). Patients' demographic, such as age and gender, were recorded and the pathologic results reported by the two pleuroscopy methods were compared and sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were reported for each method. All statistical analyses were performed using SPSS v. 21. RESULTS: Thirty patients were included in each group. The frequency of tuberculosis, malignancy, and other causes of pleural effusion had no difference between the two methods (P > 0.05). Semirigid pleuroscopy had a sensitivity of 81.5%, specificity of 66.6%, PPV of 75.6%, and NPV of 74%, while the relevant values in rigid pleuroscopy were 87.2%, 68.4%, 87.2%, and 68.4%, respectively. CONCLUSION: These results, consistent with previous studies, indicated that both semi-rigid and semi-flexible pleuroscopy methods are accurate for diagnosis of lymphocyte dominant pleural effusion when performed by skilled specialists and other considerations, such as availability and costs, can be used for selection of each method.
Background: The Hoveyzeh cohort study (HCS) is a population-based cohort study that conducted in Hoveyzeh County (South-west Iran). HCS focus on common chronic diseases, disorders and risk factors of NCDs in the Arab ethnicity. Methods: A total number of 10009 participants (35-70 years old) were recruited in this prospective cohort study from May 2016 to August 2018. The HCS data were gathered by trained interviewer through interviewer-administered questionnaires. Also anthropometric measurements, physical examinations, clinical assessments, ophthalmology evaluation, auditory examinations, respiratory and cardiovascular assessments was conducted by means of standard instruments. Biological samples including blood, urine, hair, and nail collected and stored in the biobank. Results: The overall participation rate was 82.7%. The prevalence of obesity was 27.4% in males and 47% in females. Cigarette smoking prevalence was 20.9% (40.6 % in men and 7.6 % in women). Prevalence of major non communicable diseases such as diabetes, hypertension, metabolic syndrome, cardiac ischemic, myocardial infarction and stroke was 22.2%, 26.4% 31.9 %, 13.6%, 1.85% and 1.6% respectively. Conclusion: Considering the high prevalence of obesity and smoking in the population of Hoveyzeh and since the important role of these risk factors in development of common non communicable diseases, this issue should be taken into consideration and the necessary interventions in this context must be considered to modify lifestyle. The HCS is the only comprehensive cohort in the region, enabling it to provide valuable evidence about NCDs for a wide geographical area covering millions of people in both Iran and Iraq.
