COPD, asthma and pneumonia Flashcards
Why is asthma usually not listed under COPD?
Unlike emphysema and chronic bronchitis which are not reversible and increase in severity, asthma is considered an intermittent disease with reversible airflow obstruction and wheezing.
Which diseases is the term COPD primarily used for?
Chronic bronchitis and emphysema
What is the order of things that happen as emphysema disease progresses?
- Loss of elastic recoil
- Airway collapse
- Alveolar hyperinflation
- Bullae formation
And emphysema, what happens as a result of the loss of elasticity?
It prevents for recoil so Air is trapped in the lungs.
And emphysema, what causes some of the airways to collapse?
Forceful exhalation causes increased in intrathoracic pressure which collapses the terminal bronchioles, then the Alveoli expand or hyperinflate
Why does cigarette smoking cause the person to be more susceptible to infections in the lungs?
Cilia die so mucus isnt moved out of the respiratory tree…. So dirt and everything inhaled gets stuck in the lungs.
What are some symptoms of emphysema?
Barrel Chest Clubbing of fingers Hypercapnea Decreased diaphragm excursion Respiratory acidosis Increased tactile fremitis
What is the reason for the barrel chest and emphysema? And what happens to the diaphragm
Due to Lungs being over inflated and chronic use of accessory muscles
Diaphragm - It becomes flatten or has decreased excursion
What is the swelling in the disco fingers caused by?
Chronic hypoxemia
A patient with emphysema develops acidosis as a result of retention of?
CO2
What triggers the respiratory drive and a healthy person?
High PaCO2
What triggers the respiratory drive in a person with COPD?
High PaO2
Why does the person with emphysema and chronic bronchitis have more severe hypercapnia and hypoxemia?
Mucus and swelling reduces the airway going through both the little and smaller airways. Also less gas exchange as decreased # of alveoli
What are some other reactions to the stressors of COPD not mentioned in the film?
- Egophony
- hyperresonance on chest percussoon
- Cardiac symptoms
- respiratory tract infections
What does Egophony mean?
E to A changes with auscultation