REHB1001 Chap.12 Chronic Respiratory Conditions: Asthma and COPD
Chronic Respiratory Conditions: Asthma and COPD
The Week 7 lectures cover asthma, COPD, chronic bronchitis and emphysema. This chapter explains asthma as inflammation with airway hyper-responsiveness, sets the four conditions side by side, makes bronchodilator reversibility the first discriminating question, and draws the COPD-X principles of confirming, optimising, preventing and developing a care plan.
It closes with the burden figures, pulmonary rehabilitation and the biopsychosocial view of breathlessness that Topic 2 uses as its own example. Practice items check the chronic bronchitis definition and the COPD-X actions, and a worked example reasons from a history to the most likely pattern.
What this chapter covers
- 01
Asthma inflammation and attacks
- 02
Diagnosis by spirometry and reversibility
- 03
COPD as not fully reversible obstruction
- 04
Chronic bronchitis versus emphysema
- 05
COPD-X management principles
- 06
Respiratory burden in Australia
- 07
Breathlessness in biopsychosocial terms
Worked example · free
Using COPD-X to plan physiotherapy input
- +1Optimise function: graded physical activity to reduce frailty and rebuild capacity.
- +1Prevent deterioration: support smoking cessation if relevant and encourage recommended immunisation.
- +1Develop a care plan: refer to pulmonary rehabilitation and agree an exacerbation action plan with good inhaler technique.
Key terms
- COPD
- A preventable, treatable lung disease of chronic airway obstruction that is not fully reversible.
- Bronchodilator reversibility
- Improvement in airflow after a bronchodilator, used in diagnosing asthma.
- Emphysema
- Permanent enlargement of airspaces beyond the terminal bronchioles with destruction of their walls.
- Pulmonary rehabilitation
- A supervised exercise and education programme for people with chronic lung disease.
- Spirometry
- A breathing test that measures how much and how fast air can be blown out.
- Chronic bronchitis
- Long-standing cough with sputum from inflamed, mucus-producing bronchi.
Chronic Respiratory Conditions: Asthma and COPD FAQ
How do asthma and COPD differ?
Asthma is airway inflammation with muscle tightening, diagnosed by bronchodilator reversibility, and generally has a positive prognosis when well managed. COPD is obstruction that is not fully reversible and progresses, with smoking as the first risk factor. The two can co-exist, and asthma is a COPD risk factor.
What is the definition of chronic bronchitis?
The lecture defines it as a chronic cough with sputum for at least three months of the year for at least two years, reflecting excess mucus secretion in inflamed bronchi. It is often comorbid with COPD and a risk factor for it, but it can exist without an obstructive component.
What should a physiotherapist do if they suspect undiagnosed asthma?
Refer the person to their GP for testing. The lecture explains that diagnosis is clinical and supported by spirometry with bronchodilator reversibility or an exercise challenge, which sit outside the physiotherapist's own assessment, so referral is the correct step, with a note of the symptoms you observed.
What are the three mechanisms of an asthma attack?
The lecture names swelling of the airway lining, increased secretions, and constriction of the muscle around the bronchi. Underlying inflammation is always present in asthma; during an attack these three combine to narrow the airway, which is why bronchodilators and steroids target different parts of the problem.
What are the main risk factors for COPD?
The COPD lecture lists smoking, environmental irritants, genetics, parental smoking and asthma. Tobacco carries 39% of the respiratory disease burden, so smoking cessation sits under the prevent-deterioration principle of COPD-X, alongside immunisation against influenza, pneumococcal disease and COVID-19, oxygen where needed and a plan for exacerbations.
How common is asthma in Australia?
The lecture reports that about 11% of Australians and about 16% of First Nations Australians live with asthma. It carries 2.5% of the total disease burden, two in three people with asthma have another chronic condition, and the burden is highest in remote and disadvantaged areas.
Exam move
Learn the four respiratory patterns as a grid and test yourself by covering columns. Memorise COPD-X with two actions per letter. Practise a one-minute answer on why reversibility separates asthma from COPD, and add a biopsychosocial line to each pattern about fear, stress or environment.
Practise explaining asthma to a patient in plain words: inflammation that is always there, and attacks of swelling, mucus and muscle tightening.
Working through Chronic Respiratory Conditions: Asthma and COPD in REHB1001? Sia is AskSia’s AI Health and Medicine tutor — ask any REHB1001 Chronic Respiratory Conditions: Asthma and COPD question and get a clear, step-by-step explanation grounded in how REHB1001 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.