Management of COPD Exacerbations

Am Fam Physician. 2010 Mar 1;81(5):607-613.

Patient information: See related handout on COPD exacerbations, written by the author of this commodity.

Commodity Sections

  • Abstract
  • Definition and Classification
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Hospital Belch
  • Preventing Future Exacerbations
  • References

Exacerbations of chronic obstructive pulmonary disease contribute to the high mortality rate associated with the disease. Randomized controlled trials take demonstrated the effectiveness of multiple interventions. The offset step in outpatient management should be to increase the dosage of inhaled short-acting bronchodilators. Combining ipratropium and albuterol is benign in relieving dyspnea. Oral corticosteroids are likely benign, especially for patients with purulent sputum. The employ of antibiotics reduces the risk of handling failure and mortality in moderately or severely ill patients. Physicians should consider antibiotics for patients with purulent sputum and for patients who have inadequate symptom relief with bronchodilators and corticosteroids. The choice of antibiotic should be guided by local resistance patterns and the patient's recent history of antibiotic use. Hospitalized patients with exacerbations should receive regular doses of curt-acting bronchodilators, continuous supplemental oxygen, antibiotics, and systemic corticosteroids. Noninvasive positive force per unit area ventilation or invasive mechanical ventilation is indicated in patients with worsening acidosis or hypoxemia.

In patients with known chronic obstructive pulmonary disease (COPD), exacerbations occur an average of 1.iii times per year.1 Exacerbations range in severity from transient declines in functional status to fatal events. In the United states, exacerbations accept contributed to a 102 percent increase in COPD-related mortality from 1970 to 2002 (21.4 to 43.three deaths per 100,000 persons).2 Effective management of a COPD exacerbation combines relieving acute symptoms and lowering the risk of subsequent exacerbations.

SORT: KEY RECOMMENDATIONS FOR Practice

Clinical recommendation Evidence rating References Comments

Noninvasive positive pressure ventilation improves respiratory acidosis and decreases respiratory rate, breathlessness, need for intubation, mortality, and length of hospital stay.

A

6, nine, 15, xviii

Inhaled bronchodilators (beta agonists, with or without anticholinergics) relieve dyspnea and improve practise tolerance in patients with COPD.

A

6, nine

Short courses of systemic corticosteroids in patients with COPD increase the time to subsequent exacerbation, decrease the rate of treatment failure, shorten hospital stays, and improve FEV1 and hypoxemia.

A

1, 6, vii, 9, 1720

Low-dosage corticosteroid regimens are not inferior to high-dosage regimens in decreasing the chance of treatment failure in patients with COPD.

B

17, 19

Oral prednisolone is equivalent to intravenous prednisolone in decreasing the risk of handling failure in patients with COPD.

B

22

Because they are bioavailable, inexpensive, and convenient, oral corticosteroids are recommended in patients who can safely consume and absorb them.

Antibiotics should be used in patients with moderate or astringent COPD exacerbations, particularly if there is increased sputum purulence or the need for hospitalization.

B

6, 9, 18, 24

The option of antibody in patients with COPD should be guided by symptoms (east.grand., presence of purulent sputum), recent antibiotic use, and local microbial resistance patterns.

C

xviii, 23, 25

At that place is limited evidence that wide-spectrum antibiotics are more constructive than narrow-spectrum antibiotics.

Smoking abeyance reduces mortality and future exacerbations in patients with COPD.

A

6, 7, 30

Long-term oxygen therapy decreases the hazard of hospitalization and shortens hospital stays in severely ill patients with COPD.

B

vii, 32


Definition and Classification

  • Abstract
  • Definition and Classification
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Hospital Discharge
  • Preventing Future Exacerbations
  • References

Criteria for the diagnosis of COPD have been established.three Still, at that place is no validated diagnostic test or biomarker of COPD exacerbations.four The American Thoracic Society (ATS) and European Respiratory Social club (ERS) ascertain an exacerbation as an acute change in a patient'south baseline dyspnea, cough, or sputum that is beyond normal variability, and that is sufficient to warrant a change in therapy.5  The ATS and ERS classify COPD exacerbations as mild, moderate, or severe, based on the intensity of the medical intervention required to control the patient's symptoms (Table 1).iv,v  In improver to the hallmark symptoms of a COPD exacerbation (cough, dyspnea, and increased sputum), systemic inflammation also causes extrapulmonary symptoms (Table 2).68  Factors that increase the risk of a astringent exacerbation are listed in Table three.57,ix11

Table 1.

Classification of COPD Exacerbations by Severity

Severity of exacerbation Description

Mild

Can be controlled with an increment in dosage of regular medications

Moderate

Requires treatment with systemic corticosteroids or antibiotics

Severe

Requires hospitalization or evaluation in the emergency section


Table 2.

Symptoms of COPD Exacerbation

Body system Symptoms

Cardiac

Chest tightness

Tachycardia

Musculoskeletal

Decreased exercise tolerance

Psychiatric

Defoliation

Depression

Insomnia

Sleepiness

Pulmonary

Modify in volume, color, or tenacity of sputum

Cough

Dyspnea

Tachypnea

Wheezing

Systemic

Fatigue

Fever

Angst


Table 3.

Factors that Increment Risk of Severe COPD Exacerbations

Altered mental condition

At least iii exacerbations in the previous 12 months

Body mass index of 20 kg per m2 or less

Marked increase in symptoms or change in vital signs

Medical comorbidities (peculiarly cardiac ischemia, congestive heart failure, pneumonia, diabetes mellitus, or renal or hepatic failure)

Poor concrete activity levels

Poor social support

Severe baseline COPD (FEVane/FVC ratio less than 0.70 and FEV1 less than 50 percentage of predicted)

Underutilization of abode oxygen therapy


Etiology

  • Abstruse
  • Definition and Nomenclature
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Infirmary Discharge
  • Preventing Future Exacerbations
  • References

Infection of the tracheobronchial tree and air pollution (e.chiliad., tobacco smoke, occupational exposures, ozone) are the most mutual identifiable causes of COPD exacerbations. 1 third of exacerbations have no identifiable cause.vi Other medical problems, such equally congestive heart failure, nonpulmonary infections, pulmonary embolism, and pneumothorax, tin also prompt a COPD exacerbation.nine

Initial Evaluation

  • Abstract
  • Definition and Classification
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Infirmary Discharge
  • Preventing Time to come Exacerbations
  • References

The initial evaluation of patients with a suspected COPD exacerbation should include a history of baseline and current symptoms, such as limitations in activities of daily living. If available, previous chest radiographs, arterial blood gas measurements, and spirometry results can help found the baseline lung office and illustrate a typical exacerbation. Because increasing confusion is a hallmark of respiratory compromise, the physical examination should include a mental status evaluation, likewise as heart and lung examinations.

Recommended diagnostic evaluation of an exacerbation depends on its severity (Table 4).5,8,ix,12,13 Pulse oximetry should be performed in all patients. Chest radiography is appropriate in hospitalized patients and can guide handling by revealing comorbid weather such every bit congestive centre failure, pneumonia, and pleural effusion. A room air arterial claret gas (ABG) measurement should be obtained at the time of hospital admission to quantify hypercarbia and hypoxemia. Measurement of encephalon natriuretic peptide and serial cardiac enzyme levels should exist considered in hospitalized patients, because cardiac ischemia and congestive heart failure are common comorbidities in patients with COPD.5,12,13

Table 4.

Diagnostic Evaluation of Patients with Suspected COPD Exacerbation

Examination Potential diagnosis

Perform routinely

Pulse oximetry

Hypoxemia

Perform if hospitalized

Arterial blood gas measurement

Hypercarbia

Hypoxemia

Respiratory acidosis

Chest radiography

Alternating sources of dyspnea

Consummate blood count

Anemia

Leukocytosis

Polycythemia

Electrocardiography

Cardiac arrhythmias

Cardiac ischemia

Metabolic console

Electrolyte disturbances

Hypo- or hyperglycemia

Metabolic acid-base changes

Consider performing, especially if patient is not responding to conventional exacerbation treatment

Brain natriuretic peptide measurement

CHF (ane third of dyspnea in chronic lung disease may be owing to CHF)

Cardiac enzyme measurement

Cardiac ischemia (myocardial infarction is underdiagnosed in patients with COPD)


Other physical examination maneuvers, laboratory tests, and assessments of cardiac function take non been proven beneficial in the treatment of COPD exacerbations.ix

Indications for Hospitalization

  • Abstract
  • Definition and Nomenclature
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Training for Hospital Discharge
  • Preventing Time to come Exacerbations
  • References

Almost 50 percentage of COPD exacerbations are not reported to physicians, suggesting that many exacerbations are mild.14 The hazard of decease from an exacerbation increases with the development of respiratory acidosis, the presence of meaning comorbidities, and the need for ventilatory support.five Patients with symptoms of respiratory distress and those at take a chance of distress should be admitted to the hospital to provide access to critical care personnel and mechanical ventilation. Inpatient mortality for COPD exacerbations is 3 to 4 percent.9 Patients admitted to the intensive care unit accept a 43 to 46 percent risk of death within one year after hospitalization.ix

Nonambulatory patients should receive routine pro-phylaxis for deep venous thrombosis. Because COPD is a progressive and often fatal disease, physicians should consider discussing and documenting the patient'southward wishes apropos cease-of-life care.

Oxygenation and Ventilation

  • Abstract
  • Definition and Classification
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Training for Infirmary Belch
  • Preventing Future Exacerbations
  • References

Oxygen supplementation should exist titrated to an oxygen saturation level of at least xc percent. High-flow oxygen devices deliver oxygen more reliably than nasal prongs, but nasal prongs may exist better tolerated. Noninvasive positive pressure ventilation (NIPPV) is indicated if adequate oxygenation or ventilation cannot be achieved using a high-flow mask.15 Patients requiring NIPPV should be monitored continuously for decompensation.

If the patient cannot exist fairly oxygenated, complications, such every bit pulmonary embolism or edema, should be considered.6 Carbon dioxide retention is possible in moderately and severely sick patients; therefore, ABG should be measured 30 to 60 minutes after initiating oxygen supplementation.

Invasive mechanical ventilation is needed if the patient cannot tolerate NIPPV; has worsening hypoxemia, acidosis, confusion, or hypercapnia despite NIPPV; or has severe comorbid conditions, such equally myocardial infarction or sepsis.half-dozen Worsening hypercarbia and acidosis herald respiratory failure. A pH of less than vii.36 and an arterial partial pressure of carbon dioxide of more than than 45 mm Hg indicate the demand for mechanical ventilation.

Therapeutic Options

  • Abstract
  • Definition and Classification
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Hospital Discharge
  • Preventing Future Exacerbations
  • References

SHORT-Acting BRONCHODILATORS

Inhaled short-interim bronchodilators include beta agonists (e.k., albuterol, levalbuterol [Xopenex]) and anti-cholinergics (e.g., ipratropium [Atrovent]). These agents improve dyspnea and exercise tolerance.vi,ix The starting time step in treating a COPD exacerbation is increasing the dosage of albuterol delivered via metered dose inhaler or nebulizer.9 Levalbuterol is more expensive than albuterol but has similar benefits and adverse effects.sixteen If the patient is not already taking ipratropium, it tin can exist added to the treatment regimen.5 Fixed-dose albuterol/ipratropium (Combivent) is available.

CORTICOSTEROIDS

Short courses of systemic corticosteroids increase the time to subsequent exacerbation, decrease the charge per unit of handling failure, shorten hospital stays, and improve hypoxemia and forced expiratory book in one second (FEVone).1,six,7,9,1720 Administration of oral corticosteroids early in an exacerbation decreases the demand for hospitalization.21 A randomized controlled trial (RCT) of patients with COPD compared viii weeks of corticosteroids, two weeks of corticosteroids, and placebo; participants in the treatment groups had fewer handling failures than those in the control grouping.17 Treatment failure rates were the same for long and short courses of corticosteroids.

Loftier-dosage corticosteroid regimens (methylprednisolone [Solu-Medrol], 125 mg intravenously every six hours) and low-dosage regimens (prednisolone, 30 mg orally daily) decrease the length of hospitalization and meliorate FEVone compared with placebo.17,19 [ corrected] An RCT comparing oral and intravenous prednisolone in equivalent dosages (60 mg daily) showed no divergence in lengths of hospitalization and rates of early treatment failure.22

Considering oral corticosteroids are bioavailable, inexpensive, and convenient, parenteral corticosteroids should be reserved for patients with poor intestinal absorption or comorbid conditions that forestall safe oral intake (e.g., decreased mental status, vomiting).v,6 Inhaled corticosteroids accept no role in the management of an acute exacerbation.8

ANTIBIOTICS

One half of patients with COPD exacerbations have high concentrations of leaner in their lower airways.6,23 Cultures oftentimes show multiple infectious agents, including Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Mycoplasma pneumoniae, and viruses.six,23

The apply of antibiotics in moderately or severely ill patients with COPD exacerbations reduces the risk of handling failure and death.24 Antibiotics may also benefit patients with mild exacerbations and purulent sputum.5 The optimal pick of antibiotic and length of use are unclear. Increasing microbial resistance has prompted some physicians to treat exacerbations with broad-spectrum agents, such as second- or 3rd-generation cephalosporins, macrolides, or quinolones. I meta-analysis showed a lower adventure of handling failure with broad-spectrum antibiotics compared with narrow-spectrum antibiotics (odds ratio = 0.51; 95% confidence interval, 0.34 to 0.75), simply no change in mortality rates.25 Some other meta-analysis showed no difference in clinical cure rates when broad-spectrum antibiotics were administered for at least v days versus less than v days.26 At that place is no comparable study of narrow-spectrum antibiotics. The determination to use antibiotics and the choice of antibiotic should exist guided past the patient's symptoms (east.g., presence of purulent sputum), recent antibiotic use, and local microbial resistance patterns.18,23,25 Safe, continuous utilize of antibiotics does non ameliorate outcomes in patients with COPD.6

OTHER Handling OPTIONS

Parenteral methylxanthines, such every bit theophylline, are non routinely recommended for the treatment of COPD exacerbations.27 These agents are less effective and have more potentially adverse effects than inhaled bronchodilators.

Several therapies lack acceptable evidence for routine use in the treatment of COPD exacerbations, including mucolytics (eastward.g., acetylcysteine [formerly Mucomyst]), nitric oxide, chest physiotherapy, antitussives, morphine, nedocromil, leukotriene modifiers, phosphodiesterase Iv inhibitors (drug grade not available in the U.s.), and immunomodulators (east.g., OM-85 BV, AM3 [neither drug available in the United States]).6,7 Table 5 summarizes the handling options for acute COPD exacerbations.5,half dozen,8,ix,18,25

Tabular array v.

Treatment Options for Acute COPD Exacerbations

Therapy Outpatient management Inpatient direction Benefits Disadvantages/common adverse furnishings Typical dosage

Antibiotic, wide spectrum (e.g., amoxicillin/clavulanate [Augmentin], macrolides, second- or third-generation cephalosporins, quinolones)

Consider if sputum is purulent or after treatment failure

Use if local microbial patterns testify resistance to narrow-spectrum agents

Decreases risk of handling failure and mortality compared with narrow-spectrum agents

Antibody resistance, diarrhea, yeast vaginitis; side furnishings specific to the antibiotic prescribed

Amoxicillin/clavulanate: 875 mg orally twice daily or 500 mg orally three times daily for 5 days

Use if local microbial patterns testify resistance to narrow-spectrum agents

Levofloxacin (Levaquin): 500 mg daily for v days

Antibiotic, narrow spectrum (e.g., amoxicillin, ampicillin, trimethoprim/sulfamethoxazole [Bactrim, Septra], doxycycline, tetracycline)

Consider if sputum is purulent or subsequently treatment failure

Employ if local microbial patterns bear witness minimal resistance to these agents and if patient has not taken antibiotics recently

Believed to decrease mortality gamble, but has not been tested in placebo-controlled trials

Antibiotic resistance, diarrhea, yeast vaginitis; side effects specific to the antibiotic prescribed

Amoxicillin: 500 mg orally three times daily for iii to 14 days Doxycycline: 100 mg orally twice daily for 3 to fourteen days

Use if local microbial patterns testify minimal resistance to these agents and if patient has non taken antibiotics recently

Anticholinergic, short acting (eastward.one thousand., ipratropium [Atrovent])

May add to beta agonist; if patient is already taking an anticholinergic, increment dosage

May add together to beta agonist; if patient is already taking an anticholinergic, increase dosage

Improves dyspnea and exercise tolerance

Dry oral fissure, tremor, urinary retentivity

Ipratropium: 500 mcg by nebulizer every 4 hours every bit needed; alternatively, 2 puffs (eighteen mcg per puff) past MDI every 4 hours as needed*

Beta agonist, curt acting (e.thou., albuterol, levalbuterol [Xopenex])

Increase dosage

Increase dosage

Improves dyspnea and do tolerance

Headache, nausea, palpitations, tremor, vomiting

Albuterol: 2.5 mg by nebulizer every one to four hours every bit needed, or 4 to eight puffs (90 mcg per puff) by MDI every 1 to iv hours as needed*

Corticosteroid

Consider using oral corticosteroids in moderately sick patients, especially those with purulent sputum

Use oral corticosteroids if patient can tolerate; if not suitable for oral therapy, administer intravenously

Decreases risk of subsequent exacerbation, rate of handling failures, and length of hospital stay Improves FEVone and hypoxemia

Gastrointestinal bleeding, heartburn, hyperglycemia, infection, psychomotor disturbance, steroid myopathy

Oral prednisone: 30 to sixty mg once daily Intravenous methylprednisolone (Solu-Medrol): 60 to 125 mg 2 to 4 times daily

Mechanical ventilation

NA

Use if patient cannot tolerate NIPPV; has worsening hypoxemia, acidosis, confusion, or hypercapnia despite NIPPV; or has comorbid conditions such as myocardial infarction or sepsis

Decreases brusque-term mortality hazard in severely ill patients

Aspiration, cardiovascular complications, need for sedation, pneumonia

Titrate to correct hypercarbia and hypoxemia

NIPPV

NA

Employ in patients with worsening respiratory acidosis and hypoxemia when oxygenation via loftier-menstruation mask is inadequate

Improves respiratory acidosis and decreases respiratory rate, breathlessness, need for intubation, mortality, and length of hospital stay

Expensive, poorly tolerated by some patients

Titrate to correct hypercarbia and hypoxemia

Oxygen supplementation

NA

Employ in patients with hypoxemia (PaO2 less than 60 mm Hg)

Decreases mortality adventure

Hypercarbia

Titrate to PaOii > lx mm Hg or oxygen saturation ≥ 90 percent


Preparation for Hospital Discharge

  • Abstract
  • Definition and Nomenclature
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Hospital Discharge
  • Preventing Future Exacerbations
  • References

To qualify for discharge, a patient should have stable clinical symptoms and a stable or improving arterial partial pressure of oxygen of more than 60 mm Hg for at to the lowest degree 12 hours. The patient should not crave albuterol more than oft than every four hours. If the patient is stable and can employ a metered dose inhaler, there is no benefit to using nebulized bronchodilators.28 Patient education may meliorate the response to future exacerbations29; suggested topics include a general overview of COPD, available medical treatments, nutrition, advance directives, and advice almost when to seek medical help. In-home support, such every bit an oxygen concentrator, nebulizer, and home health nurse services, should be arranged before discharge.

Preventing Future Exacerbations

  • Abstract
  • Definition and Classification
  • Etiology
  • Initial Evaluation
  • Indications for Hospitalization
  • Oxygenation and Ventilation
  • Therapeutic Options
  • Preparation for Hospital Discharge
  • Preventing Futurity Exacerbations
  • References

Smoking cessation, immunization confronting flu and pneumonia, and pulmonary rehabilitation have been shown to improve function and reduce subsequent COPD exacerbations.6,7,30 Long-term oxygen therapy decreases the risk of hospitalization and shortens infirmary stays in severely ill patients with COPD.7,31,32 The indications for long-acting inhaled bronchodilators and inhaled corticosteroids to improve symptoms and reduce the risk of exacerbations in patients with stable COPD are reviewed elsewhere.5,7,3338

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The Author

prove all author info

ANN Eastward. EVENSEN, Doc, FAAFP, is an assistant professor in the Department of Family Medicine at the University of Wisconsin School of Medicine and Public Health, Verona....

Address correspondence to Ann Eastward. Evensen, MD, FAAFP, University of Wisconsin School of Medicine and Public Health, 100 N. Nine Mound Rd., Verona, WI 53593 (electronic mail: ann.evensen@uwmf.wisc.edu). Reprints are non available from the writer.

Author disclosure: Nothing to disembalm.

The author cheers Brian Earley, Practise, for assistance in the training of the manuscript.

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