COPD Flashcards
(138 cards)
what is the GOLD 2017 definition of COPD?
COPD is a common, preventable and treatable disease that is characterized by <b>persistent respiratory symptoms and airflow limitation</b> that is due to airway and/or alveolar abnormalities usually caused by significant exposure to noxious particles or gases
what is the hallmark symptom of COPD?
dyspnea
-persistent, progressive, worse with exercise/activity
what are symptoms/indicators of COPD?
dyspnea, chronic cough (intermittent & unproductive), chronic sputum production
what’s the difference b/w COPD sx’s and asthma symptoms?
COPD sx’s are persistent
what is the #1 exposure that leads to COPD?
tobacco smoke
why are sx’s persistent with COPD?
b/c damage airway and once damage airway, can’t reverse the damage
what is the difference b/w COPD and asthma in terms of airway inflammation?
COPD has neutrophilic inflammation (vs asthma as Eosinophilic inflammation)
-neutrophilic inflammation doesn’t respond as well to ICS so beta agnostic or antimuscarinics (bronchodilators) are the staple txt of COPD
what is the staple treatment of COPD?
beta agonist or antimuscarinics (bronchodilators)
what do you see on chest x-ray for COPD?
hyperinflation
vs asthma is usually normal
what are the COPD phenotypes?
Chronic bronchitis & Emphysema
what is Chronic bronchitis?
Chronic productive cough for 3 months in each of 2 successive years when other causes of chronic cough have been excluded
what is emphysema?
Abnormal permanent enlargement of airspaces distal to the terminal bronchioles
what is asthma-COPD overlap? what meds do you use?
3 elements of asthma and 3 elements or more of COPD
Use ICS b/c asthma will respond to ICS
what is the gold standard/required for dx of COPD?
spirometry (PFT)
what does underuse of using spirometry to dx COPD lead to?
inaccurate COPD dx
what 2 main areas does spirometry measure?
he amount of air exhaled (i.e. “volume”) – FVC (forced vital capacity) – total volume able to move out of lungs
The speed in which air is exhaled (i.e. “flow”) – FEV1
what is FEV1?
Forced Expiratory Volume in 1 second:
-Volume of air expired in the 1st second of the maneuver
what is FVC?
Forced Vital Capacity:
-The total volume of air forcibly exhaled in one breath
what is the FEV1/FVC ratio?
The fraction of air exhaled in the 1st second relative to the total volume exhaled
what does the FEV1/FVC tell you?
doesn’t say COPD or asthma specifically, but it tells you it’s an obstructive disorder
If FEV1/FVC ratio improves after give SABA, what does that tell you?
If improvement of >200ml or 12% increase = asthma
If FEV1/FVC ratio doesn’t improve after give SABA, what does that tell you?
that it’s COPD
what is Gold 1?
mild COPD
FEV1 ≥80% predicted
what is GOLD 2?
moderate COPD
FEV1 ≥50%-80% predicted