Development of a clinician-administered National Institutes of Health-Brief Fatigue Inventory: A measure of fatigue in the context of depressive disorders

A systematic review of the association between fatigue and cognition in chronic noncommunicable diseases

OBJECTIVES

Fatigue is one of the most common symptoms associated with chronic noncommunicable diseases, and it may also increase cognitive impairment. However, associations between fatigue and cognitive impairment in chronic illnesses remain unclear. Therefore, the purpose of this systematic review was to examine research that investigated associations between level of fatigue and cognitive status.

METHODS

PubMed/Medline, PsycINFO, CINAHL, and Cochrane Database were searched for articles published between 2012 and 2018 using search terms fatigue, cognition, and various iterations of these terms. Study quality was assessed by the Joanna Briggs Institute Critical Appraisal Checklist tool.

RESULTS

Of 1799 citations, 10 studies in samples of individuals with cancer, multiple sclerosis, neurosarcoidosis, and chronic fatigue syndrome met the inclusion criteria. Fatigue was found to be significantly correlated with cognitive impairment in one cancer-related study (r = -.480, p < .001), one multiple sclerosis study (β= -0.52, p < .0001), and two chronic fatigue syndrome studies (r = 0.397, p < .001; r = 0.388, p < .001).

DISCUSSION

There is insufficient evidence examining the relationship between fatigue and cognitive impairment in patients with chronic illnesses. As a result, more studies are needed that examine potential relationships between these two symptoms in order to develop effective treatments for individuals living with a chronic noncommunicable disease.

Moxibustion at 'Danzhong' (RN17) and 'Guanyuan' (RN4) for fatigue symptom in patients with depression: Study protocol clinical trial (SPIRIT Compliant)

BACKGROUND

Fatigue is one of the most prevalent and debilitating symptoms of major depressive disorder (MDD). The effective management of depression-related fatigue has an important impact on the patient's abilities, functioning, and quality of life (QOL). Moxibustion has been widely used in Traditional Chinese Medicine to manage fatigue. Recent studies have also demonstrated that moxibustion is effective for treating cancer-related fatigue and chronic fatigue syndrome. However, there is not sufficient data supporting the effect of moxibustion for depression-related fatigue. Therefore, this randomized, assessor-blinded, wait-list controlled trial is designed to evaluate the effectiveness, safety, and feasibility of moxibustion treatment for depression-related fatigue.

METHODS

One hundred and seventy-six participants who meet the diagnostic criteria for depression in the International Classification of Diseases, tenth revision (ICD-10), and who also have a score of ≥1 on the 13 item of the Hamilton Depression Rating Scale-17 (HAMD-17), will be enrolled. At study entry, participants will undergo anti-depressant treatment for at least 1 month. Then those who still have a score of ≥1 on the 13 item of the HAMD-17 will be randomly allocated to either a moxibustion group or wait-list control group in a ratio of 1:1. Anti-depressants will be provided for both groups during the whole process of the study period. Participants in the moxibustion group will undergo 14 sessions of moxibustion (over 2 weeks) with anti-depressant treatment, and participants in the wait-list control group will receive only anti-depressant treatment. Subsequently, participants in the moxibustion group will be followed-up for 4 weeks. The primary outcome measure will be the Fatigue Severity Scale (FSS). The secondary outcome measure will be the HAMD-17. Safety will be assessed by monitoring adverse events during the study. Trial feasibility will also be assessed in this study.

DISCUSSION

The results of this study may provide evidence for the efficacy of moxibustion as an adjunct to antidepressants for depression-related fatigue, and promote a more widespread foundation for the selection of moxibustion in the clinical setting as well as for future research in moxibustion therapy.

TRIAL REGISTRATION

This study protocol was registered at the Chinese Clinical Trial Registry (ChiCTR1800016905).

Disentangling the association of depression on the anti-fatigue effects of ketamine

BACKGROUND

Fatigue and depression are closely associated. The purpose of this secondary analysis was to understand the relationships between depression and improvements in specific depression domains on the anti-fatigue effects of ketamine, which we previously reported.

METHODS

This secondary analysis re-evaluated data collected longitudinally from 39 patients with treatment-resistant Major Depressive Disorder (MDD) enrolled in a double-blind, randomized, placebo-controlled, crossover trial using a single intravenous infusion of ketamine hydrochloride (0.5 mg/kg over 40 minutes) or placebo. A mediation model assessed the effect of depression on the anti-fatigue effects of a single dose of intravenous ketamine versus placebo at Day 1 post-infusion. Fatigue was measured using the National Institutes of Health-Brief Fatigue Inventory (NIH-BFI), and depression was assessed by the Montgomery-Ǻsberg Depression Rating Scale (MADRS).

RESULTS

Compared to placebo, ketamine significantly improved fatigue (p = .0003) as measured by the NIH-BFI, but the anti-fatigue effects of ketamine disappeared (p = .47) when controlling for depression as measured by MADRS total score. In this study sample, the anti-fatigue effects of ketamine were mostly accounted for by the changes in amotivation and depressed mood scores.

CONCLUSIONS

In this study, ketamine did not have a unique effect on fatigue outside of its general antidepressant effects in patients with treatment-resistant depression. Specifically, the anti-fatigue effects of ketamine observed in this study seem to be explained by the effects of ketamine on two symptom domains of depression: amotivation and depressed mood. The study findings suggest that the anti-fatigue effects of ketamine should be assessed by fatigue-specific measures other than the NIH-BFI or future studies should enroll fatigued patients without depression.

Fatigue in Patients with Major Depressive Disorder: Prevalence, Burden and Pharmacological Approaches to Management

Fatigue is a frequently reported symptom in major depressive disorder, occurring in over 90% of patients. Clinical presentations of fatigue within major depressive disorder encompass overlapping physical, cognitive and emotional aspects. While this review addresses the epidemiology, burden, functional impact and management of fatigue in major depressive disorder, the main focus is on available pharmacotherapy options and their comparative efficacies. Our review of the effects of pharmacological treatments on fatigue in major depressive disorder found that medications with dopaminergic and/or noradrenergic action such as modafinil, flupenthixol and atomoxetine were most effective in improving symptoms of fatigue and low energy. However, significant variation across studies in assessment tools and study inclusion/exclusion criteria may have contributed to inconsistent findings. The efficacy of non-pharmacological interventions is also discussed, including light therapy and exercise.

An assessment of the anti-fatigue effects of ketamine from a double-blind, placebo-controlled, crossover study in bipolar disorder

BACKGROUND

Fatigue is a multidimensional condition that is difficult to treat with standard monoaminergic antidepressants. Ketamine, an N-methyl-D-aspartate receptor (NMDAR) antagonist produces rapid and robust improvements in depressive symptoms in treatment-resistant depression. However, there is a dearth of literature examining the anti-fatigue effects of ketamine. We hypothesize that ketamine will rapidly improve fatigue symptoms in treatment-resistant depressed patients.

METHODS

This is an exploratory analysis of data obtained from two double-blind, randomized, placebo-controlled, crossover trials. A total of 36 participants with treatment-resistant bipolar I or II disorder in a depressive episode (maintained on therapeutic levels of lithium or valproate) received a single infusion of ketamine hydrochloride intravenously (0.5 mg/kg over 40 min) or placebo. A post-hoc analysis compared fatigue scores on ketamine vs. placebo at 10 time points from baseline through 14 days post-treatment using the National Institute of Health-Brief Fatigue Inventory.

RESULTS

A linear mixed model showed that ketamine significantly lowered fatigue scores compared to placebo from 40 min post-treatment to Day 14 with the exception of Day 7. The largest difference in anti-fatigue effects between placebo and ketamine was at day 2 (d=0.58, p<0.05). The effect remained significant after controlling for changes in non-fatigue depressive symptoms.

LIMITATION

The retrospective nature and a small sample size are study limitations.

CONCLUSIONS

Ketamine rapidly improved fatigue relative to placebo in a group of individuals with treatment-resistant bipolar depression. NMDAR is a glutamate receptor; hence, glutamate may represent a valuable target to study the clinical efficacy of new anti-fatigue approaches in multiple disorders.