No abstract available.
Asthma* ; Epidemiology*

A study of 1544 pupils in Hanoi urban and suburban areas showed that the prevalence of asthma was 10.42%, in which the prevalence in urban area was 12.56%, higher than that in suburban area (7.52%); the prevalence in male pupils were higher than that in female ones. 9.6% cases suffered asthma from under 1 year old. The invidual allergic history, the allergic and asthma history of the family as well as environment factors are strongly associated with the asthma prevalence.
Asthma ; Epidemiology ; Pupil

Among 1789 residents in Lach Tray ward of Hai Phong City 71 suffering from broncho asthma. In general the prevalence was 3,97%, in children 4,10%, in dults 3,92%, clinically 70% had a >5 year long duration of the disease. 54,93% had the crisis in winter, nocturnal crisis 70,42%, dyspnea 100% maily in expiration with the frequency of 25 rhythm min, sputum cough 74,64% and other signs. The leading causes were: resfriratory tract inflammation, changed weather, allergy and allergenic foods.
Asthma ; Diagnosis ; Epidemiology

Studied on 892 pupils at 8 primary schools and secondary schools in urban Hanoi city, among them 112 pupils were infected with bronchial asthma and the prevalence of bronchial asthma in Hanoi urban pupils was very high (12.56%). The history of personal allergy, the allergic and asthma history of family as well as environment factors were strongly associated to the bronchial asthma prevalence. It was the first priority to implement an asthma control program in school
Asthma ; pupil ; epidemiology

Study was carried out on 3502 children in Thai Binh, Quang Tri, Binh Duong. The result showed that: rate of children under 5 diagnosised asthma in the three psovinces was 7.1%. In there, Thai Binh were 10.0%, Quang Tri 6.3%, Binh Duong 5.1%. Wheezing rate in children under 5 was 30.2% and in children under 1 was 79%. Allergy history factor have closed relationship to disease prevalence. Rate of having allergic history in children with asthama was higher by 3.23 times than that in children without asthma. Rate of having infection history in children with asthma was higher by 3.5 times than that in children without asthma
Asthma ; Child ; Epidemiology

Studying on 127 medical records of asthma patients who were treated at the Pediatric Department of Bach Mai hospital between 1/1999 and 1/2001 showed that the hospitalization of asthma children were most common in March, April and September to December. Male is more than female with the ratio were 1:1.49. There were correlation between allergic history of patients and family with asthma. The short acting beta2-adrenecgic agonists were used most common in treatment for asthma (92.64%), with oral route is highest rate, followed by nebulization and inhalation, intravenous route was less common. There were 47% cases patients without signs of bacterial infections were given antibiotics
Asthma ; Child ; Epidemiology ; Therapeutics ; Pharmaceutical Preparations

Asthma ; epidemiology ; Humans ; Rhinitis, Allergic ; Rhinitis, Allergic, Perennial ; epidemiology

Asthma/*complications ; Asthma/epidemiology ; *Education, Medical ; Malaysia/epidemiology ; *Patient Education ; Prevalence ; Severity of Illness Index

Humans ; Nasal Polyps/epidemiology* ; Cross-Sectional Studies ; Rhinosinusitis ; Asthma/epidemiology* ; Sinusitis/epidemiology* ; Chronic Disease

BACKGROUND: Impulse oscillometry(IOS) is a method to characterize the mechanical properties of respiratory system over wide range of frequency. It's most important advantage is to require minimal cooperations from subject. Therefore it is used to estimate pulmonary function of young children and to study epidemiology of occupational asthma. This study was performed to evaluate the usefulness for the clinical applications of IOS in bronchial asthmatics by estimating the associations between asthma severity and IOS parameters, and the relationships between IOS parameters and conventional spirometry. METHODS: 216 subjects with bronchial asthma were enrolled in this study. Subjects were grouped to 3 different groups according to their symptoms and pulmonary functions. Respiratory impedance, resistance (at 5Hz, 20Hz, 35Hz) and resonant frequency were measured by IOS. FEV1, FVC and MMEF were measured with conventional spirometry. RESULTS: There were significant difference of resonant frequency, resistance at 5Hz and 20Hz, resistance difference at 5Hz and 20Hz according to asthma severity(p<0.05, respectively). Resonant frequency, resistance at 5Hz, impedance were significantly correlated with FEV1 (r= -0.55, 0.48, 0.49, p<0.05, respectively). And resistance at 5Hz had similar reproducibility compared to FEV1 (resistance at 5Hz, r= 0.78 vs FEV1, r= 0.79). CONCLUSION: IOS is an useful and alternative method to evaluate clinical status of brnochial asthmatics. And further studies will be needed to clarify its values for wide range of clinical applications.
Asthma* ; Asthma, Occupational ; Child ; Electric Impedance ; Epidemiology ; Humans ; Oscillometry ; Respiratory System ; Spirometry