5C: OLD Flashcards
(43 cards)
What does the obstruction of air flow result in?
Impairments of mechanical function (primarily reduce FEV1) and gas exchange
According to GOLD, what should the FEV1/FVC ratio be?
> .75
What is GOLD Stage 1?
Mild - FEV1 is 80% or greater than predicted
What is GOLD Stage 2?
Moderate - FEV1 between 50-80% of predicted
What is GOLD Stage 3?
Severe - FEV1 between 30-50% of predicted
What is GOLD Stage 4?
Very severe - FEV1 < 30% of predicted
What are the two types of COPD?
Emphysema and bronchitis
What is a pack year?
pack year = ppd x yrs
What does smoking inhibit with Emphysema that leads to destruction of alveolar walls?
Alpha 1-antitrypsin
Why are WBC’s released with emphysema COPD and what is the effect?
To try and get rid of smoking vapor particles, but they end up destroying the alveolar walls because of the lack of alpha 1-antitrypsin
What is the result of early airways closure with COPD?
Overinflation of the alveoli that causes air to get trapped and ventilation/perfusion mismatch
What are permanent effects of COPD?
Enlargement of alveoli, loss of elastic recoil of alveoli, lungs, and thoracic cage
What is the result of overinflation of the alveoli?
Increased RV and increased compliance of the lungs and increased resting size
What happens to rib orientation over time with COPD?
Barrel chested - Increased A-P diameter, and diaphragm flattens
What can happen if hypoxemia persists in a COPD patient?
Pulmonary HTN
In advanced cases, what can the change in diaphragm position result in?
Paradoxial breathing
What are some common symptoms of COPD?
SOB, DOE, orthopnea, wheezing, decreased breath sounds, increased RR, chronic cough, malaise, weight loss
What are observable signs of COPD?
Digital clubbing, peripheral cyanosis, barrel chest, elbow roughness from UE support
What happens to accessory muscles with COPD?
Hypertrophy
What happens to FEV1 with COPD?
Decreases
What is bronchitis?
Productive cough for 3+ more months for at least 2 years
Why is there excess mucous secretions with bronchitis?
Hyperplasia at goblet cells and mucous glands
What happens at the lungs secondary to decreased ventilation?
Vasoconstriction
What can cause a patient with Bronchitis to appear bloated?
Vasoconstriction leads to increased pulmonary pressures and ultimately R sided CHF