Ch 19: Asthma Flashcards
Chronic inflammatory disorder of the airways with airway hyperresponsiveness that leads to recurrent episodes of wheezing, breathlessness, chest tightness, and coughing
Asthma
What factors cause asthma?
Respiratory infections, airborne particular matter, exercise, weather changes
The primary issue that leads to airflow limitations, which include bronchoconstriction, airway hyperresponsiveness, and airway edema is _____.
Airway inflammation
Signs and symptoms
- Wheezing (primary symptom)
- Breathlessness
- Cough
- Chest tightness
Signs and symptoms of asthma can be related to
- Exposure to allergens
- Seasonal rhinitis
- Dust mites
- Smoke
- Strong fumes
- Cold air
- Exercise
Medical history should address:
- Presence of symptoms
- Pattern of symptoms
- Physical examination of the chest
IMPORTANT TO REMEMBER:
For patients with asthma, exercise testing is generally not performed unless there is a decline in exercise tolerance that is out of proportion to the patient’s symptoms or degree of airflow limitation
What measurements are helpful for assessing asthma?
- Oxyhemoglobin saturation
- Heart rhythm (ECG)
- Metabolic cart (VO2, VCO2, anaerobic threshold)
For treatment, it is best to
Focus on asthma control, defined as the degree to which the manifestations of the disease are minimized by therapeutic intervention and the goals of therapy are met
What are appropriate measures for prevention?
- 15 min warmup
- Mask or scarf over mouth or nose