Cancer-related fatigue and functional impairment - Towards an understanding of cognitive and behavioural factors

Multidimensional Predictors of Cancer-Related Fatigue Based on the Predisposing, Precipitating, and Perpetuating (3P) Model: A Systematic Review

Cancer-related fatigue (CRF) is a widespread symptom with high prevalence in cancer patients, seriously affecting their quality of life. In the context of precision care, constructing machine learning-based prediction models for early screening and assessment of CRF is beneficial to this situation. To further understand the predictors of CRF for model construction, we conducted a comprehensive search in PubMed, Web of Science, Embase, and Scopus databases, combining CRF with predictor-related terms. A total of 27 papers met the inclusion criteria. We evaluated the above studies into three subgroups following the predisposing, precipitating, and perpetuating (3P) factor model. (1) Predisposing factors-baseline fatigue, demographic characteristics, clinical characteristics, psychosocial traits and physical symptoms. (2) Precipitating factors-type and stage of chemotherapy, inflammatory factors, laboratory indicators and metabolic changes. (3) Perpetuating factors-a low level of physical activity and poorer nutritional status. Future research should prioritize large-scale prospective studies with emerging technologies to identify accurate predictors of CRF. The assessment and management of CRF should also focus on the above factors, especially the controllable precipitating factors, to improve the quality of life of cancer survivors.

Characteristics of cancer-related fatigue and its correlation with anxiety, depression, and stress-related hormones among Chinese cancer survivors: a cross-sectional study

Background

Fatigue is a common source of distress for cancer survivors. The severity of cancer-related fatigue varies significantly, which may be due to individual differences in host factors.

Aim

This cross-sectional study aims to explore how demographic, oncological, sociological, psychological, and stress-related hormones levels interact to influence the distinct experiences of fatigue (Cancer-related fatigue [CRF] occurrence and fatigue degree).

Methods

A cross-sectional study carried out at the oncology outpatient and ward department of Xiyuan Hospital of China Academy of Chinese Medical Sciences recruited 306 cancer patients between January 2021 to December 2021. General information, fatigue, psychological factors was evaluated by general information questionnaire, the Revised Piper's Fatigue Scale-Chinese Version (RPFS-CV), and the self-report Hospital Anxiety and Depression Scale (HADS). Stress-related hormones were measured with chemiluminescent enzyme immunoassay (Zhengzhou Antobio).

Results

306 patients were included, 229 (74.8%) were diagnosed with CRF, including 94 (41.0%) with mild fatigue, 121 (52.8%) with moderate fatigue, and 14 (6.1%) with severe fatigue. Multivariate regression analysis showed that higher depression scores, aldosterone levels may increase the risk of CRF. Patients who are obese (Body mass index ≥ 28 kg/m2) may help to reduce the risk of CRF. Other contributing factors for increased levels of fatigue (p< 0.05) include being female, having anxiety, depression and high aldosterone levels.

Conclusion

The research suggested that CRF was a common symptom in cancer survivors and pay attention to these influencing factors may help to better identify patients susceptible to fatigue and provide long-term, targeted interventions.

The Effect of Using Virtual Reality Glasses on Anxiety and Fatigue in Women with Breast Cancer Receiving Adjuvant Chemotherapy: A Pretest-Posttest Randomized Controlled Study

OBJECTIVE

To determine the effect of using virtual reality glasses on anxiety and fatigue in women with breast cancer receiving adjuvant chemotherapy.

DATA SOURCES

A total of 66 women with breast cancer receiving adjuvant chemotherapy. The intervention group watched and listened to beach and nature content with virtual reality glasses for 30 minutes. The control group also received standard care. An Introductory Information Form, the State Anxiety Scale, and the Cancer Fatigue Scale were used for data collection. The scales were administered to the groups before the intervention, followed by practice or standard care, and then the scales were re-administered. All patients were evaluated for each cycle over four cycles.

CONCLUSION

In the intervention group, the mean post-application anxiety scores decreased compared with the mean pretest scores, and the mean posttest anxiety scores decreased from the first cycle to the last cycle. In addition, the mean post-test anxiety scores of the intervention group were found to be lower in all four cycles than the mean post-test anxiety scores of the control group. In the intervention group, the mean post-test fatigue and subscales scores decreased in all cycles compared with the mean pre-test scores.

IMPLICATIONS FOR NURSING PRACTICE

This research has shown that the use of virtual reality glasses is effective in reducing anxiety and fatigue scale scores and their subscales in patients with breast cancer. For this reason, it is recommended to introduce the use of virtual reality glasses to patients and to present their use according to patients' preferences.

Cancer-related cognitive impairment in racial and ethnic minority groups: a scoping review

PURPOSE

Disparities in cognitive function among racial and ethnic groups have been reported in non-cancer conditions, but cancer-related cognitive impairment (CRCI) in racial and ethnic minority groups is poorly understood. We aimed to synthesize and characterize the available literature about CRCI in racial and ethnic minority populations.

METHODS

We conducted a scoping review in the PubMed, PsycInfo, and Cumulative Index to Nursing and Allied Health Literature databases. Articles were included if they were published in English or Spanish, reported cognitive functioning in adults diagnosed with cancer, and characterized the race or ethnicity of the participants. Literature reviews, commentaries, letters to the editor, and gray literature were excluded.

RESULTS

Seventy-four articles met the inclusion criteria, but only 33.8% differentiated the CRCI findings by racial or ethnic subgroups. There were associations between cognitive outcomes and the participants' race or ethnicity. Additionally, some studies found that Black and non-white individuals with cancer were more likely to experience CRCI than their white counterparts. Biological, sociocultural, and instrumentation factors were associated with CRCI differences between racial and ethnic groups.

CONCLUSIONS

Our findings indicate that racial and ethnic minoritized individuals  may be disparately affected by CRCI. Future research should use standardized guidelines for measuring and reporting the self-identified racial and ethnic composition of the sample; differentiate CRCI findings by racial and ethnic subgroups; consider the influence of structural racism in health outcomes; and develop strategies to promote the participation of members of racial and ethnic minority groups.

Clinicians' and Advanced Cancer Patients' Estimates of Treatment Efficacy and Toxicity in Oncologic Treatment

The purpose of the study was to compare curability expectations between clinicians and patients and examine the influence of sociodemographic and clinical variables on these expectations and satisfaction within the clinician-patient relationship. This prospective study, conducted from February 2020 to May 2023, involved 986 advanced cancer patients. The patients completed questionnaires assessing treatment efficacy and toxicity predictions and the Scale to Assess the Therapeutic Relationship (STAR). Seventy-four percent of advanced cancer patients had an inaccurate perception of treatment curability. Clinicians perceived male patients with lung or digestive cancer without adenocarcinoma at locally advanced stages, with fewer comorbidities and better functional status (ECOG), as having higher curability expectations. Clinicians tended to have more realistic expectations than patients, since they had to consider the presence of treatment's side effects, while patients underestimated the possibility of experiencing these adverse effects. Patients who had more favorable expectations regarding survival and quality of life were found to be more satisfied with the care provided by their oncologists. It is crucial for patients to understand the treatment goals and establish realistic expectations in order to actively participate in decision-making and achieve a better quality of life at the end of life.

Management of Fatigue in Patients with Advanced Cancer

OPINION STATEMENT

Fatigue is a common and distressing symptom experienced by patients with cancer. It is most common in patients with locally advanced or metastatic incurable disease. It can have profound effects on quality-of-life and physical functioning. In addition to general supportive measures (directed at tackling contributory conditions and comorbidities), a variety of specific interventions have been developed which can be broadly categorised as physical therapies, psychological therapies or medication. There is some evidence that each of these approaches can have benefits in patients with earlier stage disease, those undergoing active treatment and in cancer survivors. The best evidence is for aerobic exercise, yoga, cognitive-behavioural therapy (CBT) and psycho-educational interventions. Less strong evidence supports the use of medications such as methylphenidate or ginseng. In patients with advanced disease, it is likely that the mechanisms of fatigue or the factors contributing to fatigue maintenance may be different. Relatively fewer studies have been undertaken in this group and the evidence is correspondingly weaker. The authors recommend the cautious use of aerobic exercise (e.g. walking) in those who are still mobile. The authors advise considering the use of psycho-educational approaches or CBT in those patients who are able to engage in such forms of therapy. In patients near the end-of-life, the authors advise use of dexamethasone (short-term use) and other pharmacological treatments only on the basis of a clinical trial.

The association between cancer-related fatigue and diabetes from pre-chemotherapy to 6 months post-chemotherapy

PURPOSE

To quantify the relationship between diabetes and fatigue from pre-chemotherapy to 6 months post-chemotherapy for women with breast cancer compared to women without a history of cancer (controls).

METHODS

This was a secondary analysis from a nationwide prospective longitudinal study of female patients with breast cancer undergoing chemotherapy and controls. Diabetes diagnosis (yes/no) was obtained at baseline, and cancer-related fatigue was measured using the Multidimensional Fatigue Symptom Inventory (MFSI) pre-, post-, and 6 months post-chemotherapy in patients; controls were assessed at equivalent time points. Repeated measures mixed effects models estimated the association between fatigue and diabetes controlling for cancer (yes/no), body mass index, exercise and smoking habits, baseline anxiety and depressive symptoms, menopausal status, marital status, race, and education.

RESULTS

Among 439 patients and 235 controls (52.8 ± 10.5 years old), diabetes was twice as prevalent among patients as controls (11.6% vs. 6.8%). At baseline, diabetes was associated with worse fatigue (4.1 ± 1.7 points, p = 0.017). Also, diabetes was associated with clinically meaningful worse fatigue throughout the study period among all participants (5.2 ± 1.9 points, p = 0.008) and patients alone (4.5 ± 2.0, p = 0.023). For the MFSI subdomains among patients, diabetes was associated with worse general (p = 0.005) and mental fatigue (p = 0.026).

CONCLUSIONS

Diabetes was twice as prevalent in women with breast cancer compared to controls, and diabetes was associated with more severe cancer-related fatigue in patients before and after chemotherapy and at 6 months post-chemotherapy. Interventions that address diabetes management may also help address cancer-related fatigue during chemotherapy treatment.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT01382082, first posted June 27, 2011.

Fatigue severity and avoidance among individuals with chronic disease: A meta-analysis

OBJECTIVE

Fatigue is a common, debilitating symptom experienced by individuals with chronic disease. Avoidance, or the act of evading unwanted experiences, is associated with fatigue across chronic disease samples. The current study sought to determine the strength of association between fatigue severity and avoidance in individuals with chronic disease.

METHODS

PubMed, PsycINFO, CINAHL, and ProQuest Dissertations and Theses databases were searched. Eligible studies measured fatigue and avoidance in chronic disease samples. Sixty-six studies were included. Data analyses were conducted in Rstudio. A random effects model was employed, and a weighted mean effect size was computed for fatigue severity and avoidance. Mixed-effects meta-regression analyses were conducted to examine moderating variables, including patient, clinical, and measurement characteristics. Publication bias was examined using funnel plot, trim-and-fill, and p-curve.

RESULTS

The meta-analysis comprised of 71 unique patient samples from 66 studies. The total number of included participants was 13,024. A small, positive association was found between fatigue severity and avoidance, r(71) = 0.22, p < .001, 95% CI [0.18-0.27], SE = 0.02. There was also significant heterogeneity, Q(70) = 349.96, p < .001. Moderator analyses examining age, sex, illness duration, avoidance type, and disease sample were all non-significant. Regarding publication bias, trim-and-fill resulted in a modified weighted mean effect size (r(83) = 0.18, p < .001) and a p-curve analysis supported the evidential value of the current analysis.

CONCLUSION

Findings support that among individuals with chronic disease, fatigue severity and avoidance are positively associated, which has implications for behavioral interventions in this population.

Stepped-care cognitive behaviour therapy program for treating cancer-related fatigue: protocol for a feasibility study

BACKGROUND

Cancer-related fatigue (CRF) is a commonly experienced and often debilitating side effect of cancer treatment that can persist for years after treatment completion. The benefits of cognitive behaviour therapy (CBT) for CRF are well established; however, these interventions are typically not included in standard clinical care. Traditional CBT is resource-intensive, limiting implementation in hospital settings. Stepped-care approaches can offer benefits to more people, using the same personnel as traditional models.

METHOD/DESIGN

This is a single-arm feasibility study. Fifty people with a cancer diagnosis, at least 12 weeks post-treatment or on long-term maintenance treatment, with persistent CRF that is affecting daily activities, will enrol in a stepped-care CBT program.

INTERVENTION

The stepped-care program involves two steps. Step 1: All participants begin with a 5-week supported self-management CBT progam targeting fatigue. Step 2: If fatigue remains severe or has changed less than the minimal clinically important difference on the fatigue measure after step 1, participants will be offered four sessions of therapist-directed group CBT.

MEASURES

Participants will complete questionnaires at baseline and 6 and 10 weeks. The primary outcome is feasibility of the REFRESH program. The implementation evaluation comprises acceptability, satisfaction, appropriateness, and feasibility of the study intervention, along with administrative data including cost, processes, procedures and implementation. Secondary outcomes are changes in fatigue, quality of life and self-efficacy.

CONCLUSION

The REFRESH program will be the first stepped-care CBT intervention for persistent CRF in Australia. Assessing feasibility of REFRESH is an important first step to establishing future implementation and efficacy.

Inflammatory Bowel Disease-related Behaviours [IBD-Bx] Questionnaire: Development, Validation and Prospective Associations with Fatigue

BACKGROUND AND AIMS

Disease-related behaviours that may maintain or worsen symptom burden remain largely unexplored in inflammatory bowel disease [IBD]. In this study, we developed and validated an instrument assessing IBD-related, modifiable behaviours and explored which behaviours prospectively correlate with fatigue, a debilitating and common symptom in IBD.

METHODS

Initially, 72 items reflecting IBD-related behaviours were generated based on literature review and input from clinicians and people diagnosed with IBD. During wave 1, 495 IBD patients rated to what extent each behaviour was applicable to them. Additionally, disease activity, fatigue, IBD-related concerns and psychological variables were assessed. During a follow-up visit 4-12 weeks later [wave 2], a random selection of 92 patients from wave 1 completed the measures assessing the IBD-related behaviours, disease activity and fatigue once more.

RESULTS

A principal component analysis with oblique rotation revealed seven components in the 72 IBD behaviours, which could be interpreted as: [1] Avoiding food and activities, [2] Access to toilets, [3] Avoidance of sex, [4] Cognitive avoidance, [5] Not sharing with others, [6] Alternative treatments and [7] Disease management. Each component was reduced to three to five representative items, resulting in a final, 25-item IBD-Bx questionnaire showing good concurrent validity [alphas > 0.63] and reliability. Almost all components were cross-sectionally related to levels of fatigue. Avoiding food and activities and Access to toilets significantly predicted fatigue at wave 2 when controlling for baseline fatigue.

CONCLUSIONS

The IBD-Bx is a valid and reliable questionnaire of IBD-related behaviours, some of which predict future fatigue burden.

Subgroups of patients undergoing chemotherapy with distinct cognitive fatigue and evening physical fatigue profiles

PURPOSE

The purpose was to model cognitive fatigue and evening physical fatigue together to determine subgroups of patients with distinct cognitive fatigue AND evening physical fatigue profiles. Once these profiles were identified, differences among the subgroups in demographic and clinical characteristics, co-occurring symptoms, and quality of life outcomes were evaluated.

METHODS

Oncology patients (n = 1332) completed self-report measures of cognitive fatigue and evening physical fatigue, six times over two cycles of chemotherapy. Latent profile analysis, which combined the two symptom scores, was done to identify subgroups of patients with distinct cognitive fatigue AND evening physical fatigue profiles.

RESULTS

Three distinct profiles (i.e., Low [20.5%], Moderate [39.6%], and High [39.6%]) were identified. Compared to the Low class, patients in the High class were younger, female, and more likely to live alone and had a higher comorbidity burden and a lower functional status. In addition, these patients had a higher symptom burden and a poorer quality of life.

CONCLUSION

Based on clinically meaningful cutoff scores, 80% of the patients in this study had moderate to high levels of both cognitive fatigue and evening physical fatigue. In addition, these patients experienced high levels of other common symptoms (e.g., anxiety, depression, sleep disturbance, and pain). These co-occurring symptoms and other modifiable characteristics associated with membership in the Moderate and High classes may be potential targets for individualized symptom management interventions.

The mediating role of avoidant coping in the relationships between physical, psychological, and social wellbeing and distress in breast cancer survivors

OBJECTIVE

Many breast cancer survivors (BCSs) recover from the negative sequelae of cancer treatment. However, some report persistent and disruptive distress well into disease-free survivorship. More information is needed on the predictors of distress in this growing population of BCS, including the role of avoidant coping, or attempts to avoid thoughts, feelings, and reminders of cancer, in mediating the relationship between distress and psychological, physical, and social domains of well-being.

METHODS

In a large cross-sectional study, BCS (n = 1,127), who were 3 to 8 years post-diagnosis, completed a survey assessing demographic characteristics, medical history, distress (anxiety and depressive symptoms), avoidant coping, and physical (fatigue), psychological (fear of recurrence, attention, body image), and social (social support from a partner, social constraints from a partner) well-being. Multiple mediation analyses were conducted to determine if avoidant coping mediated the relationship between each distress variable (anxiety and depressive symptoms) and each well-being (fear of recurrence, attention, body image, fatigue, social support, and social constraints) variable.

RESULTS

In all six mediation models, avoidant coping significantly (p < 0.001) mediated the relationship between each well-being variable (fear of recurrence, attention, body image, fatigue, social support, and social constraints) and each distress indicator (depression and anxiety). Avoidant coping mediated 19%-54% of the effects of the contributing factors on the distress variables.

CONCLUSIONS

Avoidant coping may indicate risk for, or presence of, distress among BCS. Interventions to reduce distress may benefit from addressing avoidant coping styles.

Expectations and perception of cancer treatment goals in previously untreated patients. The EXPECT trial

Purpose

Misconceptions regarding activity and toxicity of therapeutic interventions are common among cancer patients. There is little knowledge about the factors that contribute to a more realistic perception by patients.

Methods

This pilot study was designed as a prospective questionnaire survey and included 101 therapy-naïve patients treated at the Division of Oncology, Medical University of Vienna. After obtaining written informed consent, patients’ expectations about treatment aims, side effects and the satisfaction with their oncologic consultation were interrogated before the first treatment cycle by questionnaires.

Results

Of 101 patients, 53 (53%) were female and 67/101 (66%) were treated with curative attempt in an adjuvant or neo-adjuvant setting. The most common diagnoses were lung cancer (31%) and breast cancer (30%). Although 92% of patients were satisfied with the information given by their oncologist, palliative patients were more likely to declare that not everything was explained in an intelligible manner (p = 0.01). Patients with a first language other than German stated more often that their physician did not listen carefully enough (p = 0.02). Of 30 patients, 26 (87%) receiving chemotherapy with palliative intent believed that their disease was curable. Concerning adverse events, female patients anticipated more frequently hair loss (p = 0.003) and changes in taste (p = 0.001) compared to men. Patients under curative treatment were more likely to expect weight loss (p = 0.02) and lack of appetite (p = 0.01) compared to patients with palliative treatment intent.

Conclusion

In conclusion, cancer patients were satisfied with the patient-doctor communication. This prospective study aggregated patients’ concerns on side effects and the perception of therapeutic goals in therapy-naïve patients. Of note, the majority of patients treated in the palliative setting expected their treatment to cure the disease.

Supplementary Information

The online version contains supplementary material available at 10.1007/s00520-020-05826-x.