Evidence for cognitive–behavioral strategies improving dyspnea and related distress in COPD
Anna Norweg,1 Eileen G Collins2,3
1Department of Occupational Therapy, College of Applied Health Sciences, University of Illinois at Chicago (UIC), Chicago, IL, USA; 2Department of Biobehavioral Health Science, College of Nursing, University of Illinois at Chicago (UIC), Chicago, IL, USA; 3Rehabilitation Research and Development (RR&D), Edward Hines Jr. VA Hospital, Hines, IL, USA
Background: Dyspnea is a complex, prevalent, and distressing symptom of chronic obstructive pulmonary disease (COPD) associated with decreased quality of life, significant disability, and increased mortality. It is a major reason for referral to pulmonary rehabilitation.
Methods: We reviewed 23 COPD studies to examine the evidence for the effectiveness of cognitive–behavioral strategies for relieving dyspnea in COPD.
Results: Preliminary evidence from randomized controlled trials exists to support cognitive–behavioral strategies, used with or without exercise, for relieving sensory and affective components of dyspnea in COPD. Small to moderate treatment effects for relieving dyspnea were noted for psychotherapy (effect size [ES] = 0.08–0.25 for intensity; 0.26–0.65 for mastery) and distractive auditory stimuli (ES = 0.08–0.33 for intensity; 0.09 to -0.61 for functional burden). Small to large dyspnea improvements resulted from yoga (ES = 0.2–1.21 for intensity; 0.67 for distress; 0.07 for mastery; and −8.37 for functional burden); dyspnea self-management education with exercise (ES = −0.14 to −1.15 for intensity; −0.62 to −0.69 for distress; 1.04 for mastery; 0.14–0.35 for self-efficacy); and slow-breathing exercises (ES = 4390.34 to −0.83 for intensity; -0.61 to -0.80 for distress; and 0.62 for self-efficacy). Cognitive–behavioral interventions may relieve dyspnea in COPD by (1) decreasing sympathetic nerve activity, dynamic hyperinflation, and comorbid anxiety, and (2) promoting arterial oxygen saturation, myelinated vagus nerve activity, a greater exercise training effect, and neuroplasticity.
Conclusion: While evidence is increasing, additional randomized controlled trials are needed to evaluate the effectiveness of psychosocial and self-management interventions in relieving dyspnea, in order to make them more available to patients and to endorse them in official COPD, dyspnea, and pulmonary rehabilitation practice guidelines. By relieving dyspnea and related anxiety, such interventions may promote adherence to exercise programs and adaptive lifestyle change.
Keywords: chronic obstructive pulmonary disease, dyspnea, anxiety, slow breathing, distractive auditory stimuli, self-management
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