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COPD Primer Julie Sease, Pharm D, BCPS Clinical Assistant Professor South Carolina College of Pharmacy Test Your Knowledge 1. What are the 2 main subsets of COPD? 2. What national guidelines are used to dictate management of COPD patients? 3. What is the primary non-pharmacological management strategy for COPD? 4. Name 2 inhaled anticholinergics commonly used in the management of COPD. 5. What FEV1/FVC percentage defines COPD? 6. At what FEV1 percentage are inhaled corticosteroids indicated in COPD management? Objectives Describe the etiology and epidemiology of chronic bronchitis and emphysema Discuss non-pharmacologic treatments and preventive medicine strategies for COPD Summarize pharmacologic treatment options for COPD including the most recent additions Review current guidelines to understand proper use of medications used to treat COPD Provide recommendations for the treatment of patients with COPD COPD http://webtech.kennesaw.edu/joannregruto/images/lungs.gif COPD= Chronic Obstructive Pulmonary Disease – Characterized by progressive airflow limitation that is not fully reversible – Associated with an abnormal inflammatory response of the lungs to noxious substances (ex: tobacco smoke) Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Main Subsets of COPD Chronic Bronchitis (CB) Emphysema (EP) Images from www.deborah.org/consumer/clubs/art/copd1.gif Epidemiology Up to one quarter of patients age 40 and older may have airflow limitation indicative of Stage I COPD or higher 4th leading cause of morbidity & mortality in the US Economic impact = $32 billion in 2002 Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Etiology: Risk Factors – Genes – Exposures Smoking (#1) Occupational dusts and chemicals Heating/cooking with biomass in poorly vented dwellings – Lung growth and development – Oxidative stress – Gender http://en.wikipedia.org/wiki/Cigarette_smoking – – – – – Age Respiratory infections Socioeconomic status Nutrition Comorbidities Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Clinical Presentation: CB Blue Bloater (CO2 retention) Low PaO2 Smoking History Chronic cough/sputum production Overweight Cyanosis of lips/mucus membranes Clubbing of fingers http://www.forumbpco.be/Media/gen_images/bluebloater.jpg Sleep apnea Cor pulmonale Polycythemia Clinical Presentation: EP http://www.forumbpco.be/ Media/gen_images/pinkpuff er.jpg Pink Puffer dyspnea—even at rest Tachypnea Flushed face Thin Pursed breathing Use of accessory muscles to breath Hyperinflation of diaphragm Barrel chest Polycythemia http://www.after50health.com/images/image041.jpg Diagnosis: Pulmonary Function Tests – Spirometry Forced Expiratory Volume in 1 second (FEV1) Forced Vital Capacity (FVC) FEV1/FVC – COPD = FEV1/FVC = <70% Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Diagnosis: Pulmonary Function Tests Reversibility – FEV1 measured pre-bronchodilator – Beta agonist, anticholinergic, or both given to patient – FEV1 measured post-bronchodilator – Increase in FEV1 >200 mL and 12% above prebronchodilator is considered a significant increase = reversibility Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Comparisons Asthma Reversibility Sputum Production Alveolar Damage CB EP Classification of COPD Stage I: Mild FEV1/FVC < 70% FEV1 >/= 80% Stage II: Moderate FEV1/FVC < 70% 50% < FEV1 < 80% Stage III: Severe FEV1/FVC < 70% 30% < FEV1 < 50% Stage IV: Very Severe FEV1/FVC < 70% FEV1 < 30% or < 50% with presence of chronic respiratory failure Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Goals of Therapy Relieve symptoms Prevent disease progression Improve exercise tolerance Improve health status Prevent and treat complications Prevent and treat exacerbations Reduce mortality punkindoodledesigns.com/footballGoal.jpg Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. COPD Complications Acute respiratory failure Cachexia: loss of fat free mass Skeletal muscle wasting: apoptosis, disuse atrophy Osteoporosis Depression Normochromic normocytic anemia Increased risk of cardiovascular disease: associated with CRP Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Non-Pharmacological Therapy Pulmonary rehabilitation Immunizations Long term oxygen therapy – PaO2 < 55 mmHg – SaO2 <88% – Pulmonary HTN, Cor Pulmonale, Polycythemia (Hct >55%) Nutritional support Surgery (bullectomy, lung volume reduction, transplant) SMOKING CESSATION Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Smoking Cessation Ask Advise Assess Assist Arrange The Tobacco Use and Dependence Clinical Practice Guideline Panel, Staff, and Consortium Representatives. A clinical practice guideline for treating tobacco use and dependence. JAMA 2000;283:24-254. Smoking Cessation: Assistance Bupropion SR (Zyban) Nicotine (gum, inhaler, spray, patches) Varenicline (Chantix) Drug Therapy Bronchodilators Anticholinergics – Ipratropium (Atrovent®, Combivent®) – Tiotropium (Spiriva®) 2 Agonists – Short-acting: Albuterol (Proventil®, Ventolin®, Combivent®) Levalbuterol (Xopenex HFA®) Pirbuterol (Maxair®) Terbutaline (Brethine®) – Long-acting: Formoterol (Foradil®) Salmeterol (Serevent®, Advair®) Anticholinergics Mechanism of action: – Blocks acetylcholine at parasympathetic sites in bronchial smooth muscle = bronchodilation Also… – Dries secretions Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Anticholinergics Ipratropium: 18 mcg/puff – Dose: 2 puffs every 6 hours Possible to titrate up to 24 doses/24h Available as metered dose inhaler and nebulizer solution Anticholinergics Tiotropium (Spiriva®) 18 mcg/capsule – Long-acting agent www.pharmaceutical-technology.com/projects/ro... Onset within 30 minutes Peak = 3 hours Duration of effect = 24 hours – Dose: 1 capsule daily (Handihaler) http://www.yle.fi/akuutti/kuvat3/keuhkoaht_3.jpg Tiotropium (Spiriva®) Tiotropium vs. Placebo – 1 year in duration, placebo controlled, double-blind trial – Tiotropium added to standard therapy – Tiotropium improved FEV1 an average of 12% to 22% over placebo Casaburi R, Mahler DA, Jones PW, et al. A long-term evaluation of once daily inhaled tiotropium in chronic obstructive pulmonary disease. Eur Resp J 2002;19:217-224. Tiotropium (Spiriva®) Tiotropium vs. Ipratropium – 1 year in duration, multicenter, double blind trial – Once daily tiotropium vs. ipratropium four times daily – Tiotropium significantly improved lung function, selected quality of life scores, decreased dyspnea, and fewer exacerbations Vincken W, van Noord JA, Greefhorst APM, et al. Improved health outcomes in patients with COPD during one year treatment with tiotropium. Eur Resp J 2002;19:209-216. Tiotropium (Spiriva®) Tiotropium vs. Salmeterol vs. Placebo – Randomized, controlled trial – Tiotropium produced Greater improvements in trough FEV1 Greater improvements in dyspnea scores Greater improvements in quality of life scores Donohue JF, van Noord JA, Bateman Ed, et al. A 6-month placebo-controlled study comparing lung function and health status changes in COPD patients treated with tiotropium or salmeterol. Chest 2002;122:47-55. 2 Agonists Mechanism of Action: – Stimulate cyclic adenosine monophosphate (cAMP) which mediates relaxation of bronchial smooth muscle leading to bronchodilation Adverse Effects: – Tremor, palpitations, nervousness, tachycardia, hypokalemia – Lessened by appropriate dose and inhaled route Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. 2 Agonists (Short-Acting) Albuterol (90 mcg/puff) – Short onset of effect so drug of choice for acute relief of symptoms – Prescribed commonly on a scheduled basis to prevent or reduce symptoms in COPD – Dose: 2 puffs four times daily Maximum albuterol dose = 12 puffs/day – Metered dose inhalation & nebulizer solution 2 Agonists (Long-Acting) Salmeterol (50 mcg) Formoterol (12 mcg) – Dose 1 inhalation every 12 hours (SCHEDULED basis) www.rch.org.au/.../images/Foradil.jpg – Provide bronchodilation throughout the dosing interval Combination Bronchodilator Therapy Anticholinergic + 2 agonist – Ipratropium + Albuterol (Combivent®) – Greater efficacy than either drug alone http://www.sk.lung.ca/drugs/images/respiratory/img000082b.jpg – Dose: 2 puffs 4 times per day (SCHEDULED more effective than PRN in moderate and severe COPD) Combivent Inhalation Aerosol Study Group. In chronic obstructive pulmonary disease, a combination of ipratropium and albuterol is more effective than either agent alone. Chest 1994;105:1411-1419. Corticosteroids Mometasone (Asmanex®) – 220 mcg/inhalation – 1-2 inhalations at bedtime Flunisolide (Aerobid®) – 250 mcg/puff – 1-4 puffs twice daily https://online.epocrates.com/u/1094121/Asmanex+Twisthaler/Pill+Pictures Fluticasone propionate (Flovent®) – 44 mcg/puff (2 puffs twice daily) – 220 mcg/puff 1-2 puffs twice daily Beclomethasone dipropionatem (Vanceril®) Budesonide (Pulmicort®) Triamcinolone acetonide (Azmacort®) Corticosteroids Mechanism of Action: – Reduce capillary permeability to decrease mucus – Inhibit release of proteolytic enzymes from leukocytes – Inhibit prostaglandins Controversial: 2 appropriate situations – Acute exacerbation (IV or oral) – Long term inhalation therapy for chronic stable COPD Adverse Effects: – Inhaled: hoarseness, candida, skin bruising, decreased bone density Bourdet SV and Williams DM. Chronic Obstructive Pulmonary Disease. In: Dipiro JT, Talbert RL, Yee GC, et al., eds. Pharmacotherapy: A Pathophysiologic Approach, 6th ed. McGraw-Hill Companies Inc., 2005: 537-556. Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Combination Therapy: Long-acting 2 Agonist + Corticosteroid – Salmeterol + Fluticasone (Advair®) 100/50 mcg BID 250/50 mcg BID 500/50 mcg BID – Formoterol + Budesonide (Symbicort®) 4.5/80 mcg 2 inhalations BID 4.5/160 mcg 2 inhalations BID Additional Bronchodilators: Methylxanthines Theophylline (Theodur®; PO) Aminophylline (IV) – Mechanisms of action: Inhibit phophodiesterase increasing cAMP Inhibit calcium ion influx into smooth muscle Antagonize prostaglandins Simulate endogenous catecholamines Antagonize adenosine receptors Inhibit mast cell and leukocyte mediators Bourdet SV and Williams DM. Chronic Obstructive Pulmonary Disease. In: Dipiro JT, Talbert RL, Yee GC, et al., eds. Pharmacotherapy: A Pathophysiologic Approach, 6th ed. McGraw-Hill Companies Inc., 2005: 537-556. Additional Bronchodilators: Methylxanthines Theophylline dosing: – 200 mg twice daily (sustained action products more prevalent in use - do not switch) – Titrate to therapeutic effect and blood levels (trough 8-15 mg/dL) – Usual dose = 400-900 mg daily – Once stable, monitor blood concentration 1-2 times per year Bourdet SV and Williams DM. Chronic Obstructive Pulmonary Disease. In: Dipiro JT, Talbert RL, Yee GC, et al., eds. Pharmacotherapy: A Pathophysiologic Approach, 6th ed. McGraw-Hill Companies Inc., 2005: 537-556. Additional Bronchodilators: Methylxanthines Caution: – Metabolic Inducers and Inhibitors Adverse Effects: – – – – GI (Dyspepsia/Nausea/Vomiting/Diarrhea) CNS (Headache/Dizziness; Seizures (toxic)) CV (Tachycardia; Arrhythmias (toxic)) Monitor LFTs, cardiac function Bourdet SV and Williams DM. Chronic Obstructive Pulmonary Disease. In: Dipiro JT, Talbert RL, Yee GC, et al., eds. Pharmacotherapy: A Pathophysiologic Approach, 6th ed. McGraw-Hill Companies Inc., 2005: 537-556. Helpful Hints Opened mouth technique – Better yet…spacer Check mouthpiece prior to inhalation – Prime metered dose inhalers Rinse mouth after steroid use to avoid thrush Inhale short-acting bronchodilator first Remember to keep scheduled doses scheduled-not PRN GOLD Guidelines Global Initiative for Chronic Obstructive Lung Disease Stage I: Mild Classification Information FEV1 ≥ 80% FEV1/FVC < 70% With/without symptoms Recommended Treatment Short-acting bronchodilator as needed (albuterol or ipratropium) Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Stage II: Moderate Classification Information FEV1/FVC < 70% FEV1 50-80% With or without chronic symptoms Recommended Treatment Scheduled 1+ bronchodilators: albuterol/ipratropium or tiotropium +/salmeterol or formoterol Rehabilitation Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Stage III: Severe Classification Information FEV1/FVC < 70% FEV1 30-50% With or without chronic symptoms Recommended Treatment Scheduled 1+ bronchodilators: albuterol/ipratropium or tiotropium +/salmeterol or formoterol Inhaled corticosteroid Rehabilitation Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Stage IV: Very Severe Classification Information FEV1/FVC < 70% FEV1 < 30% or FEV1 < 50% with respiratory failure or clinical signs of heart failure Recommended Treatment Scheduled 1+ bronchodilators: albuterol/ipratropium or tiotropium +/salmeterol or formoterol Inhaled corticosteroid Long term oxygen therapy Rehabilitation Consider surgery Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Other Drug Considerations Antibiotic prophylaxis: – Expectorants/Mucolytics: – – Regular use should be avoided Alpha-1 antitrypsin augmentation therapy – No proven benefit except in patients no on inhaled steroids Antitussives – No proven benefit Water likely to do just as much good Antioxidants – No benefit + resistance Young patients with deficiency only Nebulized opioids – ? Benefit; possible seroious adverse effects Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Case 1 CR is a 70 year old man who presents with the following symptoms: – Dyspnea – Chronic cough for past 3 months (similar symptoms/duration of symptoms have been occurring for past 3 years) – Significant amounts of clear sputum produced which he continuously expectorates – 30 year history of cigarette smoking (2 ppd); worked x 30 years in the textile industry Case 1 What is wrong with CR? – What disease states do his symptoms correlate with? – What tests should be ordered to confirm a diagnosis of COPD? Case 1 Spirometry results for CR: – Prior to bronchodilator: FEV1/FVC = 60% FEV1 = 70% – Post bronchodilator: FEV1/FVC = 65% FEV1 = 75% Does CR have COPD? Case 1 What class? a. b. c. d. Mild Moderate Severe Very Severe Stage II: Moderate Classification Information FEV1/FVC < 70% FEV1 50-80% With or without chronic symptoms Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Case 1 Recommend therapy for CR – First non-pharmacologic therapy Non-Pharmacological Therapy Pulmonary rehabilitation Immunizations Long term oxygen therapy – PaO2 < 55 mmHg – SaO2 <88% – Pulmonary HTN, Cor Pulmonale, Polycythemia (Hct >55%) Nutritional support Surgery (bullectomy, lung volume reduction, transplant) SMOKING CESSATION Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Case 1 Now recommend pharmacological therapy for CR: a. Albuterol 2 puffs as needed 4-6 times per day b. Ipratropium 2 puffs as needed 4-6 times per day c. Albuterol/ipratropium 2 puffs 4 times per day + albuterol as needed up to an additional 4 puffs per day d. Albuterol/ipratropium 2 puffs 4 times per day + mometasone 220 mcg/night Case 1 Moderate: Scheduled 1+ bronchodilators -also remember short-acting PRN therapy Case 1 CR is prescribed Combivent® 2 puffs 4 times daily and is also given an albuterol MDI for as needed use up to 4 puffs in 24 hours. He reports back in 4 weeks stating that his symptoms are improved but he does report using his as needed albuterol inhaler 3-4 times per day. What will you recommend for CR at this time? Case 1 A. Add tiotropium (Spiriva®) 1 inhalation per day B. Add formoterol (Foradil®) 1 inhalation BID C. Add mometasone (Asmanex®) 1 inhalation at bedtime D. Switch from Combivent® to Spiriva® 1 inhalation per day Case 1 Moderate: Scheduled 1+ bronchodilators: albuterol/ipratropium +/salmeterol or formoterol Could also consider switch to tiotropium Case 1 CR did well for 1.5 years on Combivent® 2 puffs four times daily, Foradil® 1 inhalation twice daily, and albuterol as needed. Then, he began to have an increase in his symptom frequency with increased dyspnea and clear sputum production. Spirometry revealed a FEV1 reduction to 45%. His PaO2 is 65. His CBC shows a normal white cell count and CR has no fever. What should be recommended for CR at this time? Case 2 JD is a 67 year old white male with a 5 year history of emphysema/COPD. He presents today complaining of fever, increased sputum production (now greenish), malaise, increased use of his albuterol inhaler for the past 2 days, and increased dyspnea. Is JD having an acute exacerbation? What should be done for JD now? COPD Exacerbation Symptoms – Use of accessory respiratory muscles – Paradoxical chest wall movements – Worsening or new onset central cyanosis – Development of peripheral edema – Hemodynamic instability – Signs of right heart failure – Reduced alertness Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. COPD Exacerbation: Treatment Antibiotics: Recommended if 2 or more are present: – Increased dyspnea – Increased sputum production – Increased sputum purulence Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. COPD Exacerbation: Treatment Antimicrobial Options: – Mild exacerbation: Beta lactam +/- beta lactamase inhibitor Tetracycline Macrolide Trimethoprim/sulfamethoxazole 2nd or 3rd generation cephalosporin Ketolide – Moderate exacerbation: Beta lactam/beta lactamase inhibitor Respiratory fluoroquinolone (levo, moxi) – Severe (hospitalized with risk of pseudomonas) Fluoroquinolone (cipro, levo 750) Beta lactam with pseudomonas activity Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. COPD Exacerbation: Treatment Bronchodilators: – Particularly short acting 2 agonists for symptoms +/- anticholinergic Corticosteroids – SCCOPE (inpatient) – Oral or IV (switch to oral as soon as possible) – If continued over 2 weeks-must taper Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007. Available from: http://www.goldcopd.org; accessed February 2008. Niewoehner DE, Erbland ML, Deupree RH, et al. Effect of systemic glucocorticoids on exacerbations of chronic obstructive pulmonary disease. Department of Veterans Affairs Cooperative Study Group. New Engl J Med 1999;340:1941-1947. Case 2 JD is going to be treated outpatient. What will you recommend? Case 2 Bronchodilator: Continue albuterol as needed but caution against > 12 puffs per day Could add anticholinergic at this point Is JD’s treatment maximized? Is he in need of inhaler education? Antibiotic: – Mild exacerbation: Beta lactam +/- beta lactamase inhibitor Tetracycline Macrolide Trimethoprim/sulfamethoxazole 2nd or 3rd generation cephalosporin Ketolide – Moderate exacerbation: Beta lactam/beta lactamase inhibitor Respiratory fluoroquinolone (levo, moxi) One More Time… 1. What are the 2 main subsets of COPD? 2. What national guidelines are used to dictate management of COPD patients? 3. What is the primary non-pharmacological management strategy for COPD? 4. Name 2 inhaled anticholinergics commonly used in the management of COPD. 5. What FEV1/FVC percentage defines COPD? 6. At what FEV1 percentage are inhaled corticosteroids indicated in COPD management? Questions ???