aspek farmakologi asma bronkiale - drug addicts · aspek farmakologi asma bronkiale dr h m...
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ASPEK FARMAKOLOGI
ASMA BRONKIALE
dr H M Bakhriansyah, M.Kes., M.Med.Ed
Bagian Farmakologi
FK UNLAM
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Integrated m ed Integrated m ed Integrated m ed Integrated m ed –––– RespiratoryRespiratoryRespiratoryRespiratory
The goals for successful
management of asthma
� Achieve and maintain control of symptoms.
� Prevent asthma exacerbations.
� Maintain pulmonary function as close to normal levels as possible.
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� Maintain normal activity levels, including exercise.
� Avoid adverse effects from asthma medications.
� Prevent the development of irreversible airflow limitation.
� Prevent asthma mortality.
US National Heart, Lung, and Blood Institute publication "Global Strategy for Asthma Management and Prevention" (2002)
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Integrated m ed Integrated m ed Integrated m ed Integrated m ed –––– RespiratoryRespiratoryRespiratoryRespiratory
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Integrated m ed Integrated m ed Integrated m ed Integrated m ed –––– RespiratoryRespiratoryRespiratoryRespiratory
Medications for asthma
� Quick relief (reliever medications) � to relieve acute asthma exacerbations and to prevent EIA symptoms. � short-acting β-agonists (albuterol, levalbuterol) � anticholinergics (used for severe exacerbations),
� and systemic corticosteroids, which speed recovery from acute exacerbations (prednisone).
� Long-term control medications � inhaled corticosteroids (fluticasone, beclometasone, triamcinolone, budesonide) � cromolyn sodium,
� nedocromil, � long-acting β-agonists (salmeterol, formoterol)
� Methylxanthines (aminophyline), and � leukotriene antagonists (montelukast, zaferlukast).
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Integrated m ed Integrated m ed Integrated m ed Integrated m ed –––– RespiratoryRespiratoryRespiratoryRespiratory
Nocturnal asthma
� A long acting inhaled or oral beta 2 agonist, or
� A leukotriene modifier, or
� Inhaled corticosteroid, or
� A once-daily sustained release theophylline, or
� Changing the timing of oral corticosteroids to the mid afternoon
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RECENT DEVELOPMENT IN ASTHMA MANAGEMENTS
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Chronic Asthma
� Allergen avoidance� Lack of evidence based data
� Woodcock et al (2003), no associated with beneficial effect on peak expiratory flow
� Some benefits have been observed with more complex, intrusive, and expensive modalities combining avoidance of aeroallergens with other measures such as behavioural adaptation and environmental intervention.
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� Dietary manipulation
� Vitamin C, vitamin E, Mg and fish oil are not associated with clinically significant beneficial effects
in clinical trials but epidemiological datum
� If people who are particularly susceptible to the
beneficial effects of antioxidants or lipids can be identified, dietary supplementation may have a future
role in specifically targeted patients.
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� Buteyko technique� No improvements in lung
function, but symptoms and drug relievers when the Buteyko technique was incorporated into the routine care of asthmatic patients
� Asthma action plans� No apparent benefit of
doubling dose of inhaled CS in two trials, unless in real life setting
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� Pharmacological management
� Combined lower dose of
inhaled corticosteroids and
long acting β2 agonist
inhalers (salmeterol and
formoterol)
� Improving patients’
adherence to the drugs
� Leading to reduction of
exacerbation
� Reducing adverse events
of CS
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� Leucotriene receptor antagonists � No differences between montelucast and salmeterol given
along with CS in terms of exacerbation rates
� Similar improvement in quality of life
� Anti IgE� Omalizumab significantly improves the number of incidents
related to deterioration, exacerbation rates, ventilatoryfunctions, and symptoms scores (Ayres et al, 2004).
� Improving quality of life and exacerbation rates for patients with asthma and allergic rhinitis (Vignola et al, 2004).
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� Anti IL5 and IL12
� Significantly lower eosinophil counts in sputum and peripheral blood (Leckie et al, 2000).
� Consistently dissociation between eosinophilcounts and the effect on airway
hyperresponsiveness (Bryan et al, 2000)
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Acute asthma
� Magnesium
�Widely variation in result
�2 gr Mg IV has a greater FEV1 (Silverman et al, 2002)
�Large prospective trials are needed
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� Leucotriene receptor antagonists
�Montelukast 7 or 14 mg give a more rapid recovery on FEV1 than placebo
�Needs less β2 agonist
�Fewer treatment failure
�Zafirlukast reduces the risk of relapse
References:
• Morris, M.J. 2006. Asthma. Downloaded at emedicine.com September 2008
• Currie, GP, et al. 2005. Recent developments in asthma managements.
BMJ. 330. 585-589
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