Asthma is a heterogeneous disease, and the diagnostic criteria are ill-defined and vary between studies [16, 17].Further, there is considerable overlap between asthma and chronic obstructive pulmonary disease (COPD) .
Asthma is a heterogeneous disease, and the diagnostic criteria are ill-defined and vary between studies [16, 17].Further, there is considerable overlap between asthma and chronic obstructive pulmonary disease (COPD) .Tags: Mayfield High Coursework HelpWalden Self Reliance EssayGolf Course Research PaperStanford Housing AssignmentsCritical Thinking Classroom ActivitiesMedical Essay Uk
The diagnosis and consequently an opportunity for prevention are often missed in practice.
Based on recent studies and systematic reviews of the literature methods for detection of WRA and identification of specific causes of allergic WRA are discussed.
Finally, if the diagnosis remains unclear a follow-up with serial measurements of FEVAt least 15% of adult asthma is induced or triggered by factors in the workplace .
Early diagnosis can improve the prognosis of work-related asthma since cessation of exposure after appearance of asthmatic symptoms and identification of specific sensitization within the first months after onset of symptoms, may permit a full recovery.
All working patients with asthma and COPD should be asked whether their symptoms improve on days away from work or on holidays.
Further investigation is required for all positive respondents. Questionnaires are extensively used as screening tools in epidemiological studies.Recognized exposure to a known allergen at work and a provisional diagnosis of WRA should lead to an extensive diagnostic work-up to identify the agent and objectively confirm its causal role.Occupational allergens conform to the general definition of allergens . Vellguth, JOMT), ACGIH Tables: Occupational agents with respiratory effects according to ACGIH and/or classified with the H334 (R42) phrase and/or H335 (R37) phrase plus EU regulations (Author: X.All workers should be asked whether symptoms improve on days away from work or on holidays.Positive answers should lead to further investigation.The possibilities for prevention and degree of economic support for the patients may differ between industries and countries.The optimal diagnostic strategy will vary depending on medical as well as economic and juridical evidence.Several epidemiological questionnaires are in current use [26–28].Questions about work exposure and association of symptoms to work may be used in clinical diagnosis.Spirometry and non-specific bronchial responsiveness should be measured, but carefully performed and validly analysed serial peak expiratory flow or forced expiratory volume in one second (FEV) measurements are more specific and confirm occupational asthma in about 82% of those still exposed to the causative agent.Skin prick testing or specific immunoglobulin E assays are useful to document allergy to high molecular weight allergens.