Yes book (Asthma) Flashcards
What is asthma?
Chronic inflammatory disease of the airways that causes hyperresponsiveness, mucosal edema, and mucus production
Inflammation leads to cough, chest tightness, wheezing, and dyspnea (Fig. 24-6)
Asthma is largely reversible; spontaneously or with treatment
Allergy is the strongest predisposing factor
What are triggers for asthma?
Pollen, pets, mold and dust mites. Upper respiratory infections. Tobacco smoke. Inhaling cold, dry air. Gastroesophageal reflux disease (GERD) Stress.
How is asthma classified?
Classified according to severity:
- Mild intermittent
- Mild persistent
- Moderate persistent
- Severe persistent
What are the clinical manifestations of asthma
Cough, dyspnea, wheezing
Exacerbations
Cough, productive or not
Generalized wheezing
Chest tightness and dyspnea
Diaphoresis
Tachycardia
Hypoxemia and central cyanosis
What are the complications of asthma?
Status asthmaticus
What is the underlying pathology of asthma
Inflammation
What are the two general classes of medications for asthma?
Quick relief medications for immediate treatment of asthma symptoms and exacerbations
Long acting medications to control persistent asthma
What is the first choice of route administration in asthma and why?
Used of metered dose inhaler (MDI) or dry powder inhaler (DPI) to limit systemic side effect.
Why are inhaled corticosteroids given?
Alleviate asthma symptoms
Improve airway function
Improve peak flow by decreasing variability
Usually used in its inhaled form to decrease side effects.
Patients are taught to rinse their mouth after using this inhaler to prevent thrush, a complication of inhaled corticosteroids
Initially the inhaled form is used. If response is not adequate systemic corticosteroids can be used.
Why are systemic corticosteroids given?
Gain rapid control over an asthma attack.
Manage severe persistent asthma
Prevent reoccurence.
What are the side effects of corticosteroids given for asthma?
Hyperglycemia Fluid retention Dyspepsia GI bleeding Impaired healing Muscle wasting Osteoporosis Susceptibility to infection Hypotension
What are the corticosteroids given for asthma?
Methylprednisolone
Prednisolone
Prednisone
How are long acting beta 2 agonists used in asthma?
Used with inhaled corticosteroids
Helps control asthma symptoms especially nocturnal symptoms.
Effective in preventing exercise induced asthma (EIA)
Not used for immediate symptom relief or exacerbations
What are the LABAs used for asthma?
Salmeterol
Formoterol
Why are leukotriene modifiers given to patients with asthma?
Works by inhibiting leukotrienes that are bronchoconstrictors.
Alternative to inhaled corticosteroid for mild persistent asthma and an adjuvant for severe asthma control.