Clinical Review

Clinical Assessment and Management of Cancer-Related Fatigue


 

References

The seed extract of the guarana plant ( Paullinia cupana ) traditionally has been used as a stimulant. An improvement in fatigue scores was seen with the use of oral guarana (100 mg daily) at the end of 21 days in breast cancer patients receiving chemotherapy [101]. Further studies are needed for these results to be generalized and to understand the adverse effects and interaction profile of guarana.

Re-evaluation

Patients who have completed cancer treatment must be monitored for fatigue over the long term, as fatigue may exist beyond the period of active treatment. Many studies have shown fatigue in breast cancer survivors, and fatigue has been demonstrated in survivors of colorectal, lung, and prostate cancers as well as myeloproliferative neoplasms [28]. Therefore, it is important to screen patients for fatigue during follow-up visits. There are currently no studies evaluating the long-term treatment of fatigue. In our experience, the timing of follow-up depends on the level of fatigue and interventions prescribed. Once fatigue is stabilized to a level with which the patient is able to cope, the time interval for follow up may be lengthened. Annual visits may suffice in patients with mild fatigue. Follow-up of patients with moderate to severe fatigue depends on the level of fatigue, the ability to cope, choice of treatment, and presence of contributing factors.

Conclusion

CRF is a complex condition that places a significant burden on patients and caregivers, resulting in emotional distress, poor functioning, and suffering. Fatigue can occur before, during, and long after cancer treatment. The approach to CRF begins with screening for and educating patients and their caregivers about the symptoms. Many screening scales are available that may be used to follow patients’ progress over time. The evaluation and management of contributing conditions may help improve fatigue. If the fatigue persists, an individualized approach with a combination of nonpharmacologic and pharmacologic approaches should be considered. More research is needed to understand brain signaling pathways, cytokine changes, and genomic changes in cancer patients with fatigue. Though many hypotheses have been proposed, to date there is no biological marker to assess this condition. Biomarker research needs to be advanced to help to identify patients at risk for fatigue. As cytokines have a major role in CRF, targeted therapy to block cytokine pathways may also be explored in the future.

Acknowledgment: Bryan Tutt provided editorial assistance.

Corresponding author: Carmelita P. Escalante, MD, The University of Texas MD Anderson Cancer Center, 1400 Pressler St., Houston, TX 77030, cescalan@mdanderson.org.

Financial disclosures: None.

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