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There is sufficient understanding of the causation of occupational asthma for preventive action to be appropriate. To date, attempts appear to have been largely unsuccessful and this appears to be largely due to nonscientific/technical obstacles. These include the fragmented nature of the disease, its low public and industrial profile, and its comparative rarity in single workplaces. Nonetheless the disease has high individual and societal costs. Prevention strategies should be concentrated on workplace-exposure controls, accompanied by intense educational and managerial improvements. Methods of secondary prevention appear to be successful but require considerable refinement. Screening (out) of potential new employees is inefficient and likely to remain so; and in any case is beset by difficult ethical and legal issues. There are only a handful of published studies reporting evaluations of preventive programmes. None is entirely rigorous but each suggests that primary and secondary prevention are both feasible and highly effective. The evaluation of preventive strategies is difficult, not only because of the low incidence of the disease in individual workplaces but also because of the failure of many epidemiologists to engage in this work. Considerably more cooperation between scientists in the field, regulatory authorities and industry is required.
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Breathing retraining is used increasingly throughout the world by many patients with asthma in addition to their usual medical care. We undertook a systematic review of the literature in order to determine the effectiveness of breathing retraining in the management of asthma. Six randomised-controlled trials were identified that involved breathing retraining in asthma. Due to the variation in reported trial outcomes, limited reporting of study data and small number of included trials it was not possible to draw any firm conclusions as to its effectiveness. However, outcomes that were reported from individual trials do show that breathing retraining may have a role in the treatment and management of asthma. Further large-scale trials using breathing retraining techniques in asthma are required to address this important issue.
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Asthma, a reversible and curable disease. Mostly the prevalence of asthma in the developing countries are very high. eventhough governments and NGO's are spreading awareness among the people through stage shows and in canopy setups, still the awareness level is not up to the mark.this review article, clearly defines about the asthma and its trigger factors, types of asthma in a detailed manner. Diagnosis of asthma like physical examinations and lung function tests, route of administration plays a major role in asthma. The beneficial of inhalation is compared with the other routes. Treatment is widely distributed with some class of drug in asthma. Mainly (beta)2 agonists and inhaled corticosteroids are important. Some people practicing herbal medications all these are indicated in detail. GINA guidelines suggested regarding the step up and step down medications to be followed in asthma. In addition to this so many drug makers enrolled their presence in the market but still some companies are playing vital role in this sectors and mentioned in this article also.
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