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What is the severity of COPD associated with FEV1 ≥ 80% predicted?
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What is the severit of COPD associated with FEV1 between 50-80% predicted?
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What is the severity of COPD associated with FEV1 between 30-50% predicted?
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What is the severity of COPD associated with FEV1 < 30% predicted?
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What is the severity of COPD associated with FEV1 < 50% predicted plus chronic respiratory failure?
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How much of an increase in postbronchodilator FEV1 or FVC can occur before the disease is more characteristic of asthma than of COPD?
12%
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Which PFT test is used to determine diagnosis of COPD?
FEV1/FVC ratio
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What FEV1/FVC ratio confirms COPD?
< 70%
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Which PFT test is used to determine staging of COPD?
FEV1
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What would the qualitative measures of FEV1, FVC, FEV1/FVC, and TLC in an obstructive disease?
- FEV1 = decreased
- FVC = decreased or normal
- FEV1/FVC = decreased
- TLC = normal or increased
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What are the key indicators of COPD?
- Cough (especially productive cough)
- Sputum production
- Chronic and progressive dyspnea
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What does FEV1 measure?
How much is exhaled in the 1st second
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What does FVC measure?
Total volume exhaled after maximal inhalation
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What 2 things are always done to treat COPD no matter the stage/severity?
- Active reduction of risk factors: influenza vaccine
- Add short-acting bronchodilator prn
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What is added to tx for Stage II/Moderate COPD?
- Regular treatment with ≥ 1 long-acting bronchodilators
- Rehabilitation
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What is added to tx for Stage III/Severe COPD?
Inhaled corticosteroids if repeated exacerbations
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What is added to tx for Stage IV/Very Severe COPD?
- Long-term oxygen if chronic resp. failure
- Consider surgical tx
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What is the mainstay of treatment for COPD?
Bronchodilators
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What is the mainstay of treatment for asthma?
Steroids
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What are the SABAs used for Mild COPD?
- Albuterol (Proair, Proventil, Ventolin)
- Perbuterol (Maxair)
- Levalbuterol (Xoponex)
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What are the short-acting anticholinergics used for Mild COPD?
Ipratropium (Atrovent MDI or neb)
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What is the short-acting bronchodilator combination used for Mild COPD?
Albuterol/Ipratropium (Combivent, Duoneb)
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What are the SE of SABAs?
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What are the SE of inhaled anticholinergics?
- Dry mouth
- Nausea
- Metallic taste
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What is the problem with LABAs in tx of COPD?
- tolerance can develop to the efficacy
- (bonus is that it develops to SE also)
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What are the LABAs used to tx Moderate COPD?
- Salmeterol (Serevent)
- Formoterol (Foradil DPI, Perforomist neb)
- Arformoterol (Brovana neb)
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What are the Long-acting anticholinergics used to tx Moderate COPD?
- Tiotropium (Spiriva DPI)
- Ipratropium (Atrovent)
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What are the methylxanthines used to tx Moderate COPD?
Theophylline
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What is the MOA of theophylline in tx of Moderate COPD?
bronchodilation by inhibition of PDE
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What are the SE of theophylline?
- NV
- Tachycardia/arrhythmias
- HA
- Insomnia
- Seizures
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How often should pts on theophylline for COPD be re-assessed?
6-12mo intervals
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What is the target serum concentration of theophylline for COPD?
5-15 mcg/mL
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What are the DI of theophylline?
- 1A2 substrate
- tobacco
- Anticonvulsants
- Rifampin
- Alcohol
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What is pulmonary rehabilitation?
- exercise training
- nutritional counseling
- disease education
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What are the corticosteroids used in tx of Severe COPD?
- Beclomethasone (QVAR)
- Budesonide (Pulmicort flexhaler DPI, Pulmicort respules neb)
- Ciclesonide (Alvesco)
- Fluticasone (Flovent, Flovent diskus DPI)
- Mometasone (Asmanex)
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What is the only corticosteroid available in a nebulizer formulation?
Budesonide (Pulmicort respules)
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What are the corticosteroid combination products used in tx of Severe COPD?
- Budesonide/Formoterol (Symbicort)
- Fluticasone/Salmeterol (Advair diskus DPI, Advair)
- Mometasone/Formoterol (Dulera)
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What are the SE of inhaled corticosteroids?
- Hoarseness
- Thrush
- Cough
- ↓ bone mineral density
- ↑ fracture risk?
- ↑ risk of pneumonia?
- ↑ risk of atrial fibrillation?
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What role do inhaled corticosteroids play in tx of COPD?
- Reduce frequency of exacerbations and improve health status
- Response is less dramatic than in asthma
- THEY DO NOT reduce mortality in COPD!
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What must be done to increase effectiveness of Advair diskus for tx of COPD?
- you have to increase the dose d/t the limit on LABA/d
- You can not increase the frequency!
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What role does Roflumilast (Daliresp) play in tx of COPD?
decreases frequency of exacerbations
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What is the MOA of roflumilast for tx of COPD?
PDE-4 inhibitor (expressed in inflammatory cells)
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What are the advantages of Roflumilast over Theophylline in tx of COPD?
- It is more selective (PDE-4)
- Weaker DI (1A2, 3A4)
- not associated with CV or seizures
- no need to monitor blood levels
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What are the SE of roflumilast?
- ND
- Anorexia
- Suicidal thinking (rare, but requires med guide)
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What is the most common cause of a COPD exacerbation?
respiratory tract infection
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What is the tx for mild exacerbation of COPD?
increase dose of regular meds
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What is the tx for moderate exacerbation of COPD?
Systemic corticosteroids +/- antibiotics
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What is the tx for severe exacerbation of COPD?
- Hospitalization or evaluation in ER
- O2 if O2 Sat < 90%
- SABA +/- anticholinergic nebulizer or MDI w/spacer:
- nebs q 20min (albuterol 2.5-5mg, ipratropium 0.5mg), then q 1-4h
- Glucocorticoids for 7-10d:
- PO preferred route
- Consider adding theophylline if needed
- Antibiotics:
- Macrolides, anti-pneumococcal FQs, 2nd/3rd gen Ceph
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What are the SE associated with high doses or long use of glucocorticoids for tx of severe exacerbation of COPD?
- hyperglycemia
- psychosis
- muscle atrophy
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When do you have to worry about tapering off of glucocorticoids?
if used longer than 2wks
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When should discharge be considered for COPD severe exacerbation?
- SABA required no more than q 4h
- Pt can walk across the room
- Pt is able to eat and sleep w/o frequent awakening by dyspnea
- Pt has been clinically stable for 12-24h
- Arterial blood gases have been stable for 12-24h
- Pt/caregiver fully understands correct use of meds
- Follup-up arrangements have been made
- Pt/family/physician confident pt can manage successfully at home
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What meds should the pt be discharged on for severe exacerbation of COPD?
- Finish up Steroid course
- Short-acting bronchodilator prn
- other meds as appropriate based on COPD stage most likely in
- Finish up antibiotic course
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Can beta agonists still do their job if the pt is on BBL?
yes
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What are the preferred BBL for COPD pts?
- atenolol
- bisoprolol
- metoprolol
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