BACKGROUND: Although fatigue is a commonly reported symptom in cancer patients its etiology is still poorly understood. The objective of the present study was to investigate the relationship between hemoglobin (Hb) levels and the subjective experience of fatigue and quality of life in cancer patients with mild or no anemia undergoing chemotherapy. PATIENTS AND METHODS: Sixty-eight cancer patients (25 colorectal, 26 lung and 17 ovarian cancer) presently undergoing chemotherapy participated in the study. Fatigue was measured with the Multidimesional Fatigue Inventory (MFI-20), quality of life with The European Organization for Research and Treatment of Cancer QLQ-C30. In order to provide normative data for fatigue levels, the MFI-20 was also completed by a sex- and age-matched sample of 120 healthy controls. RESULTS: Compared with healthy subjects, cancer patients experienced significantly higher levels of subjective fatigue. Correlations between Hb values and subscales of the MFI-20 were moderate with a tendency to increase during chemotherapy. Hb values alone, however, do not fully account for the observed fatigue. Other symptoms, especially pain, dyspnea and sleep disturbances, also showed an association with perceived fatigue. CONCLUSIONS: Despite significant correlations, these results indicate that Hb values only partially explain subjectively experienced fatigue and quality of life in cancer patients. It is suggested therefore that the treatment of fatigue must be multidimensional and involve all areas which contribute to the syndrome.
BACKGROUND: Although fatigue is a commonly reported symptom in cancerpatients its etiology is still poorly understood. The objective of the present study was to investigate the relationship between hemoglobin (Hb) levels and the subjective experience of fatigue and quality of life in cancerpatients with mild or no anemia undergoing chemotherapy. PATIENTS AND METHODS: Sixty-eight cancerpatients (25 colorectal, 26 lung and 17 ovarian cancer) presently undergoing chemotherapy participated in the study. Fatigue was measured with the Multidimesional Fatigue Inventory (MFI-20), quality of life with The European Organization for Research and Treatment of Cancer QLQ-C30. In order to provide normative data for fatigue levels, the MFI-20 was also completed by a sex- and age-matched sample of 120 healthy controls. RESULTS: Compared with healthy subjects, cancerpatients experienced significantly higher levels of subjective fatigue. Correlations between Hb values and subscales of the MFI-20 were moderate with a tendency to increase during chemotherapy. Hb values alone, however, do not fully account for the observed fatigue. Other symptoms, especially pain, dyspnea and sleep disturbances, also showed an association with perceived fatigue. CONCLUSIONS: Despite significant correlations, these results indicate that Hb values only partially explain subjectively experienced fatigue and quality of life in cancerpatients. It is suggested therefore that the treatment of fatigue must be multidimensional and involve all areas which contribute to the syndrome.
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