• Support Care Cancer · Jan 2020

    Symptom correlates of dyspnea in advanced cancer patients using the Edmonton Symptom Assessment System.

    • Erin McKenzie, Liying Zhang, Stephanie Chan, Pearl Zaki, Yasmeen Razvi, May Tsao, Elizabeth Barnes, Leah Drost, Caitlin Yee, Matthew Hwang, Carlo DeAngelis, and Edward Chow.
    • Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Sunnybrook Odette Cancer Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, Canada.
    • Support Care Cancer. 2020 Jan 1; 28 (1): 87-98.

    PurposeDyspnea is frequently experienced in advanced cancer patients and is associated with poor prognosis and functional decline. This study used the Edmonton Symptom Assessment System (ESAS) to characterize the relationship between dyspnea and concurrent symptoms experienced by advanced cancer patients.MethodsA prospective database was collected and analyzed to extract patient demographics and ESAS scores. Logistic regression analysis and generalized estimating equations (GEE) identified correlations of other ESAS symptoms in three categories: severity of dyspnea (none, mild, moderate, severe), moderate/severe dyspnea (ESAS ≥ 4), and presence of dyspnea (ESAS ≥ 1), at patients' first visit and over time, respectively.ResultsMultivariable analysis revealed drowsiness (p = 0.001), and anxiety (p = 0.01) and appetite loss (p = 0.02) were associated with increased severity of dyspnea at first visit. Over time, tiredness (p = 0.02), drowsiness (p = 0.04), nausea (p = 0.02), and anxiety (p = 0.0006) were more likely to experience increased dyspnea severity. Tiredness (p = 0.0003), depression (p = 0.03), and appetite loss (p = 0.003) were significant for moderate/severe dyspnea at first visit. Over multiple visits, tiredness (p < 0.0001), anxiety (p = 0.0008), and appetite loss (p = 0.0008) had higher probabilities of moderate/severe dyspnea. For the presence of dyspnea at the first visit, anxiety (p = 0.03) and drowsiness (p = 0.002) were significantly correlated with an increased frequency of dyspnea. Over time, anxiety (p < 0.0001) and drowsiness (p < 0.0001) remained significant with the addition of nausea (p = 0.0007).ConclusionsThe highly interactive relationship between dyspnea and other common cancer symptoms necessitates the development of comprehensive symptom assessments and utilization of multimodal management approaches that consider concurrent symptoms for improved identification and treatment of dyspnea.

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