Factors Associated with Severe Disease in a Population of Asthmatic Children of Bogota, Colombia

Background. There is evidence that prevalence and severity of asthma in children has risen. Risk factors for severe asthma have been studied extensively in children living in developed countries, but little is known about factors determining the severity of asthma in Latin American countries. The aim of this study was to investigate the role of suspected, potential risk factors for asthma severity in a population of children living in urban Bogota. Methods. We studied 175 children, 2 to 16 years old, with asthma attending an asthma clinic. Severe cases and nonsevere asthmatic subjects were compared regarding suspected, potential pre-, peri-, and postnatal risk factors. Results. After controlling for asthma duration, we found that children never breast fed (OR, 11.53; 95% CI, 2.35-56.50; p = 0.003), mothers 30 years or younger at the child's birth (OR, 3.44; 95% CI, 1.23-9.63; p = 0.019), usual use of acetaminophen for fever in the child in the 12 months previous to the survey application (OR, 3.13; 95% CI, 1.14-8.56; p = 0.026), older siblings at birth (OR, 3.81; 95% CI, 1.28-11.32; p = 0.016), and primary or secondary school as the highest level of education attained by mother (OR, 3.20; 95% CI, 1.01-10.07; p = 0.046) were all independent predictors of severe asthma. Conclusion. No breastfeeding, maternal age at child's birth of less than 30 years, routine use of acetaminophen for fever in the child in the 12 months previous to the survey application, older siblings at birth, and primary or secondary school as the highest level of education attained by mother were independent predictors of severe asthma. Some of these risk factors are clearly modifiable. Further prospective, population-based studies with a bigger sample size and a more representative sample of the general population residing in the city are needed to retest and clarify these associations.     

Factors Associated with Depression and Resilience in Asthmatic Children

The purposes of this study were to examine relationship between depression and resilience in children with asthma and identify factors associated with depression. Data were collected from 86 children who ranged in age from 10 to 15 years and who had been diagnosed with asthma for over 6 months. Resilience was measured with an instrument developed by Kim (2002) and depression with the Child Depression Inventory by Kovac (1985). The results showed that older children, children with lower resilience scores, and children whose parents were rigid and restrictive had significantly more depression. Education on parenting should be included in comprehensive care programs for asthmatic children.     

Factors Associated with Depression and Resilience in Asthmatic Children

The purposes of this study were to examine relationship between depression and resilience in children with asthma and identify factors associated with depression. Data were collected from 86 children who ranged in age from 10 to 15 years and who had been diagnosed with asthma for over 6 months. Resilience was measured with an instrument developed by Kim (2002) and depression with the Child Depression Inventory by Kovac (1985). The results showed that older children, children with lower resilience scores, and children whose parents were rigid and restrictive had significantly more depression. Education on parenting should be included in comprehensive care programs for asthmatic children.     

Comparison of Asthma Knowledge,Management, and Psychological Burden among Parents of Asthmatic Children From Rural and Urban Neighborhoods in India

Introduction: Asthma prevalence is increasing in developing countries such as India. Little is known on parental knowledge of asthma severity, management and psychosocial impact, particularly among rural dwellers. Further, it is not known whether the female asthmatic child is particularly vulnerable. Objective: To evaluate parental asthma knowledge and psychological impact of having an asthmatic child. Methods: 134 consecutive caregivers were surveyed at the visit for their child's asthma exacerbation at an urban hospital in Kanpur, India between 3/2007–3/2008. Results: The child's age range was 5.7Â ± 2.7 years. 76% were urban city dwellers with significantly higher number having a college degree. 23% children had moderate to severe persistent asthma; however, only 42% were on inhaled steroids. Parental severity perception was comparable to National Heart, Lung and Blood Institute (NHLBI) classification. While 67% identified bronchoconstriction occurred with asthma, only 8.9% recognized that inflammation played a role. There was no difference in the perceived stress by area of residence with 89% reported not or only sometimes feeling stressed with having an asthmatic child. Similarly, the concern among those with a female asthmatic child did not differ with 73% of caregivers believing that asthma would not affect their daughter's future. Conclusion: In an urban Indian hospital, 23% of asthmatic children had moderate to severe persistent asthma but only 9% were on controllers. Their parents were well educated, able to identify asthma severity appropriately and denied being stressed with having asthmatic children, irrespective of the gender of the child. However, their understanding of asthma pathophysiology was sub-optimal. Increased disease knowledge may lead to greater medication adherence among asthmatic children in India.     

Factors Associated with the Development of Severe Asthma Exacerbations in Children

Background. Asthma exacerbations are one of the most common causes of hospitalization in children and account for approximately 10,000 intensive care unit (ICU) admissions per year in the United States. Despite the prevalence of this disease in children, the factors associated with the development of these severe exacerbations are largely unknown. Methods. A retrospective case–control study was conducted involving all eligible children admitted to the hospital with asthma for a 1-year period. Potential associated factors and outcomes of children admitted to the ICU with a severe exacerbation (cases) were compared to those of children with acute asthma admitted to the ward (controls). Results. A total of 188 children were hospitalized with asthma during the study period, 57 (30%) of whom required admission to the ICU. There were no differences in age, gender, or race between cases and controls. Children admitted to the ICU were significantly more likely to have an allergy or irritant-triggered exacerbation than children admitted to the ward (OR 3.9; 95% CI 1.9–8.2; p = .0003). Additionally, children in the ICU had a significantly shorter duration of illness before being admitted to the hospital compared to those admitted to the ward (1.7 ± 2.3 vs. 3.4 ± 4.8 days; p = .002). Conclusions. In this retrospective review, severe asthma exacerbations in children are associated with a more rapid onset of symptoms and are more likely to be associated with allergens or irritants, supporting the importance of atopy in this population.     

Influenza-Like Illness Responsible for Severe Exacerbations in Asthmatic Children During H1N1 Pandemic: A Survey Before Vaccination

Background. Asthma seems to be the more prevalent underlying condition in patients hospitalized for H1N1-related flu. Methods. A prospective survey was conducted during the early phase of H1N1 pandemic in France in asthmatic children before vaccination to assess whether severe exacerbations in childhood asthma are associated with influenza-like illness (ILI, the definition of H1N1-related flu in a pandemic). Eight pediatricians in primary care distributed in three localities (Paris, south suburb, and west suburb) conducted the survey (4 weeks/locality from week 36 to 47). At each visit, the pediatrician filled a questionnaire entering the information regarding asthma treatment, severe exacerbation (at least 3 days' use of systemic corticosteroids), and ILI (temperature ≥37.8°C, cough, and/or sore throat, in the absence of a known cause other than influenza) during the past 3 weeks. Results. The survey included 1155 asthmatic children (mean age [SD]: 7.5 years [4.1]); almost all visits were scheduled (99%). A severe exacerbation was recorded in 121 children [10.5%; 95% confidence interval (CI): 8.7–12.2%], which was concomitant with ILI in 20 children (16.5%; 95% CI: 9.9–23.2%), whereas 1034 children did not exhibit any exacerbation. In these latter children, 40 ILI were observed (3.9%; 95% CI: 2.7–5.0%), which constituted a significantly lesser percentage as compared with children with both exacerbation and ILI (p < .0001). This result remained significant in each locality. Overall, 60/1155 (5.2%; 95% CI: 3.9–6.5%) asthmatic children had an ILI. Conclusions. Our survey shows that severe exacerbation and ILI are strongly associated during the H1N1 pandemic in asthmatic children.     

Factors Affecting Bronchial Hyperreactivity in Asthmatic Children

Bronchial hyperresponsiveness (BHR), the exaggerated airway narrowing in response to nonspesific stimuli, is a common characteristic of asthma. One hundred thirty-five children who were diagnosed asthma in the outpatient clinic of Gazi University Hospital, Pediatric Allergy and Asthma Department between January 2007 and January 2008 were retrospectively analysed from the asthma database of the division. BHR was not found to be different according to sex. Younger the age of the patient, more severe was BHR (p = 0.096, r = 0.164). Younger the age at onset of the symptoms, the more severe was the BHR (p < 0.001, r = 0.307). Patients who had an asthmatic first degree relative and who were exposed to passive smoking at home, had more severe BHR (p = 0.006 and p = 0.032, respectively). There were more hospitalizations among the asthmatic children with moderate-severe BHR (p = 0.027) however no correlation was found between chronic asthma severity and the degree of BHR). In this study we found that age, age at onset of symptoms, having a parent with asthma, exposure to tobacco smoke and baseline lung function are related to BHR measured at referral. Serum levels of Ig E or skin prick test positivity were not found to have any effect on BHR severity. Considering BHR severity, we could not reveal any relation between atopic and nonatopic children. However among atopic subjects, the ones with indoor allergen sensitization had more severe BHR.     

Psychological Factors Associated with Medication Nonadherence in Asthmatic Children

Adherence with inhaled beta-agonists and corticosteroids in 24 asthmatic children was tracked over 3 months utilizing the metered-dose inhaler chronolog (MDIC). Patients seldom took all of their medications as prescribed, and failed to take any inhaled corticosteroid doses on a median of 41.8% of days or inhaled beta-agonists on 28.1% of days despite prescribed daily use. Medication nonadherence was correlated with lower levels of asthma knowledge (Asthma Knowledge Questionnaire) and family dysfunction (Family Assessment Device), but not child behavior disorder (Child Behavior Checklist). Patients tended to dramatically over-report medication use. Improved identification of the markers of nonadherence can directly facilitate more efficient targeting of behavioral interventions, resulting in improved adherence, better illness control, and less requirement of urgent medication intervention.     

Factors Associated with Low Bone Mineral Density at the Time of Diagnosis in Children with Celiac Disease

Objective:It has been reported that bone mineral density (BMD) is decreased in children with Celiac disease (CD) compared to their healthy peers. The aim of this study was to reveal possible risk factors for low BMD in Turkish children newly diagnosed with CD.Methods:Eighty-six patients (2-18 years old) with CD were included in this retrospective study. The relationship between their lumbar BMD z-scores calculated according to their chronological age (CA) and height age (HA) and their clinical, laboratory [biochemical parameters, tissue transglutaminase antibody-IgA (TTGA) levels, human leukocyte antigen (HLA) types] and histopathological parameters were evaluated.Results:The mean age of the patients at diagnosis was 8.06±4.08 years. The BMD z-score CA was ≤-2 standard deviation (SD) in 26.7% of the patients. The BMD z-score HA was ≤-2 SD in 12.8% of the patients. The BMD z-score HA only correlated with their age at diagnosis of CD (r_s value 0.269). However, there was no statistically difference between the BMD z-score HA >-2 SD and ≤-2 SD subgroups regarding their clinical, laboratory and histopathological parameters.Conclusion:Low BMD is common in children with newly diagnosed CD. Age at diagnosis, gender, body size, Celiac symptoms, biochemical parameters, TTGA level, HLA type, and histopathological stage had no predictive values in terms of low BMD in this patient group.     

Exposure Levels of Asthmatic Children to Allergens,Endotoxins, and Serine Proteases in a Tropical Environment

A cross‐sectional study was conducted in Bayamón, Puerto Rico, to identify and quantify indoor allergens, serine proteases, and bacterial endotoxin present in homes of asthmatic children. A total of 126 dust samples from houses were obtained from the entire mattress and bedside floor. Most of the patients had detectable levels of mite, cockroach, cat, and dog allergens. Mold allergens were found only in bedside floor dust samples. Mouse allergens were not detected. Forty‐two percent, 36.5%, and 1.8% of the patients demonstrated exposures to sensitizing levels of mite, Bla g 1 and cat allergens, respectively. The percentage of patients exposed to high levels of allergens capable of triggering asthma symptoms was 33.3% and 26.4% for mite and Bla g 1 allergens. Only dog allergen, bacterial endotoxin, elastase, and trypsin were associated with asthma symptoms. Eighty‐nine percent of the asthmatic children were exposed to endotoxin concentrations greater than 100 EU/mg dust, and more than half of the patients were exposed to high levels of serine proteases. Our study indicates that indoor concentrations of allergens traditionally associated with asthma symptoms and severity may not be applicable in tropical environments and highly ventilated households. In fact, in the study population, endotoxins, dog allergen, and serine proteases may play a dominant role in the induction of asthma symptoms.     

Factors Associated With the Control of Severe Asthma

Introduction. Control is a priority treatment objective in asthma, and classification based on control is recommended in the follow-up of asthmatic patients. Different factors affect this control, and there are several regional differences, both in terms of prevalence and in terms of management and degree of control. Objective. To evaluate the factors associated with control of severe asthma in routine clinical practice. Material and Methods. This was a prospective, cross-sectional, observational study of patients with severe asthma who were receiving treatment with a fixed combination of a corticosteroid (at least 800 μg/day of budesonide or equivalent) and an inhaled β₂-adrenergic agonist in respiratory medicine and allergology clinics throughout Spain. The authors collected demographic and socioeconomic data, as well as clinical data on asthma. The patients also completed a self-administered validated questionnaire—the Asthma Control Questionnaire (ACQ)—about the control of their asthma. Results. The authors included 1471 patients, of whom 1224 (83%) were valid for the final analysis. Women accounted for 61%. Mean age was 51 ± 16 years. The mean number of exacerbations during the previous year was 2.0 ± 2.0. The global score on the ACQ was 1.8 ± 1.1 (0 = no symptoms; 6 = maximum number of symptoms). Only 20.4% of patients were well controlled (ACQ < 0.75), and 55.7% of patients were poorly controlled (ACQ > 1.5). The multivariate analysis revealed that the variable with the greatest effect on control of asthma was the number of exacerbations during the previous year: when the number of exacerbations increased from 0 to 1 or more, the ACQ score increased by 0.56 points. Employed patients had a mean of 0.23 points less (better control) than unemployed and retired patients. Control of asthma was also significantly affected by adherence to treatment, patient knowledge of the disease, body mass index, gender, and number of visits to a physician in the previous 3 months. Conclusions. Many patients with severe asthma have poor control of their disease. The number of exacerbations is the variable with the greatest effect on control of asthma. Knowledge of the disease and adherence to treatment are associated with better control.     

Cardiovascular Disease in Developing Countries: Myths, Realities, and Opportunities

Summary. The burden of cardiovascular disease (CVD), especially ischemic heart disease and stroke, varies remarkably between regions of the world, with declining rates in Europe, North America, and Australia/New Zealand, burgeoning epidemics in the former socialist economies and India, and relatively lower impact in developing regions such as sub-Saharan Africa. The basis for a prediction of a global CVD epidemic lies in the epidemiologic transition, in which control of infectious, parasitic, and nutritional diseases allows most of the population to reach the ages in which CVD manifests itself. In fact, CVD is already the leading cause of death not only in developed countries but, as of the mid-1990s, in developing countries as well. A variety of myths have attempted to minimize the rationale for CVD control in developing countries. In reality, CVD affects men, not only the elderly, and the rich, but rather a broad spectrum of the population. Moreover, as a cause of disability it will be a world leader by 2020. Finally, there is evidence that the epidemic can be curtailed. Projections to the year 2020 predict an expansion of the CVD epidemic to the developing world, with CVD exceeding infectious and parasitic diseases in all regions except sub-Saharan Africa. These estimates, in fact, may be conservative, because several factors may allow multiplication of risk. In utero or early childhood deprivation, the use of disposable income for deleterious health behaviors (such as tobacco and a high fat/cholesterol diet), interactions between multiple coexisting risk factors, and the interaction between newly acquired health behaviors and genes may all inflate the risk to levels above those predicted. Efforts to control CVD should invest strategically in research to understand the prevalence of, and risks associated with, CVD risk factors, as well as in studies of new risk factors, measures to prevent or modify risk, and clinical trials to demonstrate the efficacy of these interventions. In lieu of this improved research base, a number of initiatives should go forward to prevent the dissemination of risk factors, to treat risk factors appropriately in high-risk subjects, and to develop case-management strategies shown to be both efficacious and cost effective. A global epidemic of CVD in developing countries may be inevitable unless there is a better understanding of its origins, a prediction of its magnitude, and the organization of preventive and case-management strategies early enough to control it.     

Predictors of Asthma Control in a Random Sample of Asthmatic Patients

The purpose of this study was to identify determinants of asthma control. Questionnaires were completed by a random sample of 570 members of a large managed care organization who were ≥35 years of age with utilization suggestive of active asthma. Asthma control was assessed buy the Asthma Control Test (ACT). Independent relationships were found between lower ACT scores and oral corticosteroid use (p < 0.0001), COPD (p < 0.0001), absence of regular specialist care (p = 0.006), higher BMI (p = 0.01), gastroesophageal reflux (p = 0.02), not being Caucasian (p = 0.04), and low income (p = 0.04).     

Factors Associated with Furry Pet Ownership Among Patients with Asthma

Background. Exposure to indoor allergens is an established risk factor for poor asthma control. Current guidelines recommend removing pets from the home of patients with asthma. Objectives. This cross-sectional study was conducted to determine the prevalence of furry pet ownership in asthmatics compared to nonasthmatics and to identify factors associated with furry pet ownership among those with asthma. Secondary analysis assessed characteristics among asthmatics that might be associated with allowing a furry pet into the bedroom. Methods. Using data from The National Asthma Survey collected from 2003 to 2004, we carried out univariate and multiple regression analyses, in 2009, to identify independent predictors of furry pet ownership in asthma sufferers after controlling for potential confounders. Results. Overall, asthmatics were more likely to own a furry pet than nonasthmatic individuals in the general population (49.9% versus 44.8%, p < .001). Multivariate analysis showed that female sex, older age, white race, and high income were independent predictors of furry pet ownership among asthmatics. Additionally, 68.7% of patients with asthma who own a furry pet allowed them into their bedroom. Higher income and carrying out ≤2 environmental control practices in the home were associated with increased likelihood of allowing a furry pet into the bedroom. Conclusions. Furry pet ownership is equally or more common among asthmatics compared to those without asthma. The majority of asthmatics with furry pets allow them into the bedroom. Recognizing and addressing these problems may help decrease asthma morbidity.     

Modifiable Risk Factors for Asthma Morbidity in Bronx Versus Other Inner-City Children

Background: Bronx children have higher asthma prevalence and asthma morbidity than other US children. Objective: To compare risk factors for asthma morbidity present in Bronx children with those of children from other US inner-city areas. Methods: Cross-sectional, multi-state study of 1772 children ages 5–11 yrs. old with persistent asthma. Parental responses to the Child Asthma Risk Assessment Tool for 265 Bronx children are compared with those of 1507 children from 7 other sites (1 Northeast, 2 South, 2 Midwest, 2 West). Results: Bronx children were significantly more likely to be sensitized to reported aeroallergens in their homes than were children from the other sites (86% vs. 58%; p <.001). More Bronx parents reported household cockroaches (65% v 20%; p <.001), mice (42% v 11%; p <.001), and rats (7% v 3%; p <.001); using a gas stove to heat the home (20% v 9%; p <.001); and visible mold (48% v 25%; p <.001). Bronx parents were more likely to report pessimistic beliefs about controlling asthma (63% v 26%; p <.001) and high parental stress (48% v 37%; p <.01). Conclusions: Compared with other inner-city children with asthma, Bronx children are more likely to be exposed to household aeroallergens to which they are sensitized and have poor housing conditions. Their parents are more likely to report low expectations for asthma control and high levels of psychological stress. Interventions that address these identified needs may help to reduce the disproportionate burden of asthma morbidity experienced by Bronx children.     

Treatment Regimens and Health Care Utilization in Children with Persistent Asthma Symptoms

This study evaluated the anti-inflammatory medication regimens in children with persistent asthma, determined their health care utilization patterns, and evaluated factors associated with failure to seek and/or receive appropriate treatment. Parents of 68% of children who qualified for anti-inflammatory medications by National Asthma Education and Prevention Program (NAEPP) guidelines reported their use. However, only 14% received an optimal regimen (mild intermittent symptoms), while 55% were still symptomatic despite reported medications (suboptimal regimen). Nearly half of symptomatic children did not have a health care visit; of those who did, 61% had no corrective action documented. Factors contributing to variations in regimen and utilization are discussed.     

Treatment Regimens and Health Care Utilization in Children with Persistent Asthma Symptoms

This study evaluated the anti-inflammatory medication regimens in children with persistent asthma, determined their health care utilization patterns, and evaluated factors associated with failure to seek and/or receive appropriate treatment. Parents of 68% of children who qualified for anti-inflammatory medications by National Asthma Education and Prevention Program (NAEPP) guidelines reported their use. However, only 14% received an optimal regimen (mild intermittent symptoms), while 55% were still symptomatic despite reported medications (suboptimal regimen). Nearly half of symptomatic children did not have a health care visit; of those who did, 61% had no corrective action documented. Factors contributing to variations in regimen and utilization are discussed.     

Conditioning Factors of Respiratory Allergies in Bogota, Colombia, S.A.

The review of 1010 case histories, over a period of 10 years, of patients suffering from allergic rhinopathies and/or asthma showed the following results: house dust showed the highest incidence, 32%. This was followed by spores of inhalant fungus with 22%; mattress fill, wool and feathers were next, 16%; pollens, of which the most frequent are gramineous, 14%; grasses 7%; weeds 3%, and trees 2%. The epithelium of animals 6%, occupational rhinitis 5%, and sensitivity to Candida 3%, should be kept in mind. Foods (responses cannot represent absolute evaluation) occupied the last place among the etiology of the allergic respiratory syndrome: 2%. Infectious rhinitis was not included in the statistical evaluation.