International journal of chronic obstructive pulmonary disease
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Int J Chron Obstruct Pulmon Dis · Jan 2015
Review Comparative StudyComparison of laboratory- and field-based exercise tests for COPD: a systematic review.
Exercise tests are often used to evaluate the functional status of patients with COPD. However, to the best of our knowledge, a comprehensive systematic comparison of these tests has not been performed. We systematically reviewed studies reporting the repeatability and/or reproducibility of these tests, and studies comparing their sensitivity to therapeutic intervention. ⋯ Protocol variations (eg, track layout or supplemental oxygen use) affected performance significantly in several studies. This review shows that while the validity of several tests has been established, for others further study is required. Future work will assess the link between these tests, physiological mechanisms, and patient-reported measures.
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Int J Chron Obstruct Pulmon Dis · Jan 2015
ReviewProfile of inhaled glycopyrronium bromide as monotherapy and in fixed-dose combination with indacaterol maleate for the treatment of COPD.
Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity and mortality. The cornerstone of pharmacological treatment for COPD is bronchodilation. Inhaled glycopyrronium bromide is a long-acting muscarinic antagonist developed as a maintenance treatment for patients with COPD. ⋯ A combination of glycopyrronium bromide with indacaterol maleate (QVA149) has recently been approved as a once-daily maintenance therapy in adult patients with COPD. Phase III trials (the IGNITE program) with QVA149 have demonstrated significant improvements in lung function versus placebo, glycopyrronium, and tiotropium in patients with moderate to severe COPD, with no safety concerns of note. Hence QVA149 is a safe treatment option for moderate to severe COPD patients in whom long-acting muscarinic antagonist monotherapy is inadequate.
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Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality worldwide. Age and smoking are common risk factors for COPD and other illnesses, often leading COPD patients to demonstrate multiple coexisting comorbidities. COPD exacerbations and comorbidities contribute to the overall severity in individual patients. ⋯ In this review, we focus on the major comorbidities that affect COPD patients. We present an overview of the problems faced, the reasons and risk factors for the most commonly encountered comorbidities, and the burden on health care costs. We also provide a rationale for approaching the therapeutic options of the COPD patient afflicted by comorbidity.
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Int J Chron Obstruct Pulmon Dis · Jan 2015
ReviewPalliative care in COPD: an unmet area for quality improvement.
COPD is a leading cause of morbidity and mortality worldwide. Patients suffer from refractory breathlessness, unrecognized anxiety and depression, and decreased quality of life. Palliative care improves symptom management, patient reported health-related quality of life, cost savings, and mortality though the majority of patients with COPD die without access to palliative care. ⋯ Additionally, physicians avoid conversations about advance care planning due to unique communication barriers present with patients with COPD. Lastly, many health systems are not set up to provide trained palliative care physicians to patients with chronic disease including COPD. This review analyzes the above challenges, the available data regarding palliative care applied to the COPD population, and proposes an alternative approach to address the unmet needs of patients with COPD with proactive primary palliative care.
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Int J Chron Obstruct Pulmon Dis · Jan 2014
ReviewUpdate on the pathological processes, molecular biology, and clinical utility of N-acetylcysteine in chronic obstructive pulmonary disease.
Chronic obstructive pulmonary disease (COPD) is a common and morbid disease characterized by high oxidative stress. Its pathogenesis is complex, and involves excessive oxidative stress (redox imbalance), protease/antiprotease imbalance, inflammation, apoptosis, and autoimmunity. Among these, oxidative stress has a pivotal role in the pathogenesis of COPD by initiating and mediating various redox-sensitive signal transduction pathways and gene expression. ⋯ With regard to the dose-dependent properties of NAC, two recent randomized controlled Chinese trials suggested that high-dose NAC (1,200 mg daily) can reduce exacerbations in patients with COPD, especially in those with an earlier (moderately severe) stage of disease, and also in those who are at high risk of exacerbations. However, there was no significant effect on symptoms or quality of life in patients receiving NAC. Further studies are warranted to investigate the effect of NAC at higher doses in non-Chinese patients with COPD.