Respiratory medicine is the medical specialty that focuses on the study of the respiratory system, and on the diagnosis and the treatment of diseases of the lungs and bronchi.
In Europe, and worldwide, respiratory diseases are a leading cause of morbidity and mortality.1 Overall, in terms of incidence, prevalence, cost and mortality, they are placed second, behind cardiovascular disease.1 In 2003, the total financial cost of lung disease in Europe was estimated at 102 billion Euros.1 The most common respiratory diseases are; lung cancer, chronic obstructive pulmonary disease (COPD), asthma, pneumonia, and tuberculosis.1
Asthma and COPD are the most common chronic respiratory diseases in adults in Europe.2 COPD is a set of chronic respiratory diseases affecting bronchial tubes, characterised by persistent obstruction of the airways, and accompanied by emphysema and/or chronic bronchitis.3 The prevalence of COPD is steadily rising worldwide due to the increased consumption of tobacco and an aging population.4
In 90% of cases, smoking is responsible for the development of respiratory diseases and thus represents the main risk factor.2 However, other factors appear to be involved but are insufficiently evaluated. These include; domestic and atmospheric pollution5, dietary habits6 and the level of physical activity.7 Studies are needed to understand the mechanisms involved, identify risk factors and genetic predisposition, and to develop new strategies for prevention and treatment of respiratory diseases, as in the case of COPD.8
1. European Respiratory Society. European lung white book. ERSJ Ltd, 2003 : 182 pages.
2. World Health Organization. Global surveillance, prevention and control of chronic respiratory diseases: a comprehensive approach. WHO Press. 2007 : available online.
3. Beers M.H. et al. The Merck manual of medical information. Merck research laboratories. Second home edition. 2003, 281-285.
4. Halbert R. J. et al. Global burden of COPD: systematic review and meta-analysis. European Respiratory Journal. March 2006 ; 28 : 523-532.
5. Schikowski T. et al. Long-term air pollution exposure and living close to busy roads are associated with COPD in women. Respiratory Research. December 2005 ; 6 : 152.
6. Hu G. et al. Antioxidant nutrients and pulmonary function: The third national health and nutrition examination survey (NHANES III). American Journal of Epidemiology. 2000 ; 151 (10) : 975-981.
7. Garcia-Aymerich J. et al. Physical activity and clinical and functional status in COPD. Chest. March 2009 ; 136 : 62-70.
8. Calverley P.M. et al. Chronic obstructive pulmonary disease. Lancet. September 2003 ; 362 (9389) : 1053-61.
Chronic Obstructive Pulmonary Disease (COPD) is a progressive disease of the respiratory system resulting in decreased lung function, which is a growing cause of morbidity and mortality worldwide. It has been estimated by The WHO Global Burden of Disease project that COPD was the fourth leading cause of death in 2004 and predicts that by 2030 it will be the third.1 However it is thought that the current prevalence is an underestimate, due to a lack of awareness among primary care physicians.
The three main symptoms of COPD are dyspnoea (breathlessness), cough and sputum production.2 In addition to these symptoms, many patients also experience mild to moderate pulmonary hypertension, cor pulmonale, weight loss and a general deterioration in their feeling of well-being.3-5
Diagnosis of COPD can be made using a combination of different methods; patient history, physical examination, airflow measurements, chest X-ray, and electrocardiogram.2
This progressive disease has no cure; however treatments for COPD are widely used to reduce the symptoms. Treatment guidelines outline the available treatments for specific stages of COPD.2
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References:
1. WHO The global burden of disease: 2004 update. Part 2 – Causes of death. Available at: http://www.who.int/healthinfo/global_burden_disease/GBD_report_2004update_part2.pdf (Accessed 11 November 2011).
2. Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease (updated 2010). Available at: http://www.goldcopd.com/ - (accessed 11 November 2011).
3. Rennard S, Decramer M, Caverley PMA et al. Impact of COPD in North America and Europe in 2000: subjects' perspective of Confronting COPD International Survey. Eur Respir J 2002; 20: 799-805.
4. Kumar P and Clark M (Eds.) Chapter 13 – Cardiovascular disease. In: Clinical Medicine 6th ed. Philadelphia, PA: Elsevier Saunders, 2005.
5. Agustí A. Systemic effects of chronic obstructive pulmonary disease – what we know and what we don't know (but should). Proc Am Thorac Soc 2007; 4: 522-525.
The World Health Organisation estimates that globally there were 7.6 million deaths caused by cancer worldwide in 2008, and expects this figure to exceed 11 million by 2030 if the current trends continue. Lung cancer was the most common; accounting for 1.4 million deaths annually1.
Lung cancer can be divided into two forms; Non-Small Cell Lung Cancer (NSCLC) and Small Cell Lung Cancer. NSCLC is the most common form accounting for 80% of all cases2. It is not one single type of cancer; instead it is a group of cancers that have been grouped together because approaches to diagnosis, staging, prognosis and treatment are similar. This group is composed of squamous cell carcinomas, adenocarcinomas and large cell carcinomas2.
During 2011, four symposia have been hosted by AstraZeneca to discuss the role of EGF Receptor Tyrosine Kinase Inhibitors on the treatment of EGFR+ tumours in people with advanced stage lung cancer. These symposia were held during four conferences; The 7th Asia Pacific International Academy of Pathology Congress (APIAP 2011), the 14th World Conference on Lung Cancer (WCLC 2011), the 23rd European Congress of Pathology of the European Society of Pathology (ECP 2011), and the 2011 European Multidisciplinary Cancer Congress (ECCO-ESMO 2011).
Asthma is a disorder defined by its clinical, physiological, and pathological characteristics. The main physiological feature of asthma is episodic airway obstruction characterized by expiratory airflow limitation. The dominant pathological feature is airway inflammation, sometimes associated with airway structural changes.
An Overview of COPD; Symptoms, Diagnosis and Treatment
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