Condition or cognition? Mechanism of change in fatigue in a randomized controlled trial of graded exercise therapy or cognitive behavior therapy for severe fatigue in patients with advanced cancer.

OBJECTIVE: Fatigue remains one of the most common and distressing symptoms during treatment for advanced cancer. The TIRED trial demonstrated cognitive behavior therapy's (CBT) significant and clinically relevant effects to reduce fatigue among patients with advanced cancer, while graded exercise therapy (GET) did not prove beneficial. The present study aims to determine the mechanisms by which CBT and GET affect fatigue. METHOD: The TIRED trial randomized 134 patients with advanced cancer to CBT (n = 46), GET (n = 42), or usual care (n = 46). At 14 weeks, 126 evaluable patients provided fatigue data and of those 117 received ≥1 CBT or GET session or usual care. We tested a prespecified multiple mediation model with four potential mediators (physical activity, exercise capacity, self-efficacy, and fatigue catastrophizing) assessed at baseline and at 14 weeks. Post-hoc analyses also included perceived physical activity and emotional functioning as potential mediators. RESULTS: A total of 82 of 117 patients completed all required measures. CBT reduced fatigue indirectly through its effect on self-efficacy, ab = -3.292; 97.5% bootstrap CI [-6.518 to -0.598]. CBT participants experienced an increase in fatigue self-efficacy, with greater self-efficacy associated with decreased fatigue severity. There was no evidence that changes in physical activity, exercise capacity, perceived physical activity, fatigue catastrophizing, or emotional functioning mediated CBT's or GET's effects on fatigue. CONCLUSIONS: The effect of CBT was attributable to changes in cognition, that is, increased self-efficacy led to reduced fatigue severity. No significant mediators for GET were found. The findings inform further refinement of interventions for fatigue in this seriously ill population. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

A prospective analysis on fatigue and experienced burden in informal caregivers of cancer patients during cancer treatment in the palliative phase.

BACKGROUND: Although fatigue is the most frequently occurring symptom in patients with cancer, hardly anything is known about fatigue of their informal caregivers and the impact fatigue might have on perceived burden with providing care. We investigated the presence of fatigue in caregivers, its course and the relation of fatigue severity between caregivers and patients. Furthermore, we explored in caregivers whether fatigue severity was correlated to experienced burden. MATERIAL AND METHODS: Informal caregivers and patients on cancer treatment in the palliative phase completed questionnaires at baseline and follow-up (6 months later). To measure fatigue severity, both groups completed the Checklist Individual Strength. Additionally, caregivers completed the Caregivers Strain Index to assess experienced burden with providing care. Descriptive analyses, paired t-tests, χ(2)-tests, Pearson's correlations and regression analysis were performed. RESULTS: At baseline 111 couples (patients and caregivers) participated, at follow-up 75 couples. At both time points 23% of caregivers were severely fatigued. There was no significant correlation between patients and caregivers on fatigue. Higher fatigue in both patients and caregivers was correlated with higher burden in caregivers and over 30% of burden could be explained by fatigue. CONCLUSION: Almost a quarter of caregivers of patients on active palliative treatment were severely fatigued, which figure remained stable over time. Fatigue in both patients and caregivers was related to caregivers' burden. This observation should be taken into account with the growing demand on caregivers and the increase in cancer treatment options in the palliative setting.

Exploring the contribution of psychosocial factors to fatigue in patients with advanced incurable cancer.

OBJECTIVE: Fatigue is the most frequently occurring and distressing symptom in patients with advanced cancer, caused by multiple factors. Neither a specific histological diagnosis of malignancy nor the type of anticancer treatment seem to be strongly related to fatigue, which support the idea that other factors may play a role. This study investigated to what extent the model of fatigue-perpetuating factors that is known for cancer survivors was applicable for patients with advanced cancer. METHODS: Patients on active treatment for various incurable cancers were asked to complete the Checklist Individual Strength, subscale fatigue severity and physical activity, the Acceptance scale of the Illness Cognition Questionnaire, the Hospital Anxiety and Depression Scale, the Fatigue Catastrophizing Scale, the Symptom Checklist subscale sleep, and the van Sonderen Social Support List-Discrepancies. RESULTS: The questionnaires were filled in by 137 patients. Inappropriate coping, fear of progression, fatigue catastrophizing, discrepancies in social support, depressive mood, self reported physical activity, and sleeping problems were all related to fatigue severity in univariate analyses, of which the latter two were significant in a multivariate linear regression analysis. CONCLUSION: This study tested fatigue-perpetuating factors known to be of relevance in cancer survivors, for their relation with fatigue severity in palliative patients. We demonstrated that these factors were also relevant for patients on palliative treatment. On the basis of our results, we suggest clinicians confronted with palliative patients with serious fatigue to address sleeping problems and promote physical activity. In case of persistent fatigue, personalized cognitive behavioral therapy can be considered.

Sedation in palliative care.

PURPOSE OF REVIEW: Palliative sedation, the conscious induction of sleep in patients with a very short life expectancy who suffer intractable physical and existential distress, may offer the patient and his or her relatives a more peaceful dying. This technique is still subject to several ethical and medical controversies justifying a review of the recent literature on this subject. RECENT FINDINGS: The available evidence consists of few prospective trials and mainly retrospectively collected case reports. Two guidelines are published in the period under review. The most important points stressed in these reviews are the careful information exchange with the patient, if possible, and his or her proxies, a gradually increased sedation allowing respite if possible to evaluate the effect of the sedation and the need for consultation with colleagues, preferentially physicians experienced in palliative care. Stopping artificial nutrition and hydration is a medical decision that should be taken after evaluation of the potential side effects and consultation with the patient and relatives. SUMMARY: Palliative sedation may be considered for terminally ill patients who suffer intractable symptoms. Ideally it should be included in the patient's trajectory that has been described and discussed earlier when the disease was judged to be incurable. The main goal is to offer comfort.