Abstract 14463: Associated Factors of Trajectories of Fatigue and Dyspnea in Patients Three Months After Coronary Artery Bypass Surgeries
Objectives: There is limited information about developmental trajectories of fatigue and dyspnea in CABG patients over the first three months postoperatively. The aims of the study are to identify the trajectories of these two symptoms and their associated factors.
Method: A sample of 221 patients undergoing CABG was interviewed before surgeries, and at one week, 6 weeks and 3 months. Personal and clinical characteristics were collected at baseline as were data on symptoms (Cardiac Symptom Survey) on four occasions over 3 months. A latent class growth model (LCGM) was used to identify whether distinct latent classes existed in the progression of patients’ symptoms. The multivariate multinomial logistic regression was further applied to explore the associated factors with the latent classes.
Results: Using BIC (Bayesian information criterion) index to determine the number of trajectories, three distinct classes in each symptom were identified. Patients who had longer ICU stay (≥4 days; OR = 4.09, p = 0.016), had fewer vessels bypassed (≤2; OR = 6.21, p = 0.003) and cigarette smoking (OR = 4.86, p =0.009) were more likely to be the group which have the highest level of fatigue throughout the follow-up. Patients who were younger (<65 years; OR = 0.37 & 0.21, p = 0.044 & 0.002, respectively) and had more vessels bypassed (≥3; OR = 0.32 & 0.27, p = 0.027 & 0.012, respectively) were more likely to be in the “persistently low dyspnea” group (the best trend) as compared to the other two groups (relatively worse trend).
Conclusion: Baseline personal and clinical factors are associated with the trends of fatigue and dyspnea during the early recovery of post-CABG. Patients with a longer ICU stay, fewer numbers of vessel bypassed, smoking are associated with higher level of fatigue and older age should be carefully informed with the risk of increased fatigue and dyspnea postoperatively.
- © 2013 by American Heart Association, Inc.