Schuler M, et al. - Researchers examined the interrelations among different aspects of dyspnea and other COPD parameters and symptoms of depression in COPD patients. This is the first study performed using network analyses to model depression in COPD patients. As per findings, dyspnea frequency and dyspnea functioning primarily associate with somatic depression symptoms (sleep problems, loss of energy), while cognitive/emotional response primarily relates to cognitive-affective depression symptoms (feeling down/depressed/hopeless). Sleep problems and loss of energy are noted as bridging symptoms between depression and COPD.