Tag: 1997

Do patients with “pure” chronic fatigue syndrome (neurasthenia) have abnormal sleep?

Abstract:

OBJECTIVE: To determine whether patients with “pure” chronic fatigue syndrome (neurasthenia) have sleep abnormalities which may contribute to subjective measures of daytime fatigue.

METHOD: Sleep characteristics of 20 patients meeting research criteria for chronic fatigue syndrome (CFS) but not depression, anxiety, or sleep disorder were compared with sleep characteristics of 20 healthy subjects matched for age and sex. Measures of sleep included a) subjective interview reports and sleep diaries and b) home-based polysomnography.

RESULTS: Patients with CFS complained of poor quality unrefreshing sleep. They also napped during the day. Polysomnograph data showed no difference in actual nocturnal sleep time between the two groups although patients with CFS spent significantly longer in bed (p < .01), slept less efficiently (p < .03), and spent longer awake after sleep onset (p < .05). The polysomnographs of seven patients with CFS and one healthy subject were regarded as significantly abnormal. Five patients and one healthy subject had difficulty maintaining sleep. One patient had a disorder of both initiating and maintaining sleep and one patient woke early.

CONCLUSIONS: Patients with “pure” CFS complain of unrefreshing sleep but only a minority have a clearly abnormal polysomnograph. The most common abnormality is of long periods spent awake after initial sleep onset. Although sleep abnormalities may play a role in the etiology of CFS, they seem to be unlikely to be an important cause of daytime fatigue in the majority of patients. However, pharmacological and behavioral methods that improve sleep quality may be an important component of a pragmatically based treatment package for patients who do have abnormal sleep.

 

Source: Sharpley A, Clements A, Hawton K, Sharpe M. Do patients with “pure” chronic fatigue syndrome (neurasthenia) have abnormal sleep? Psychosom Med. 1997 Nov-Dec;59(6):592-6. http://www.ncbi.nlm.nih.gov/pubmed/9407577

 

Adaptive tasks, coping and quality of life of chronically ill patients: the cases of Parkinson’s disease and chronic fatigue syndrome

Abstract:

This article is a report of a larger study on the relationship between adaptive tasks, coping and quality of life, taking Parkinson’s disease and chronic fatigue syndrome (CFS) as examples. The concept of adaptive tasks or disease-related stressors testing the adaptive capacities of chronically ill patients (N=134) was explored by applying the method of concept mapping.

Results show that patients both with Parkinson’s disease and with CFS generally refer to the same themes when asked for the adaptive tasks their disease brings about. However, the actual contents of these adaptive tasks differ as well as their impact on coping and quality of life. In the case of patients with Parkinson’s disease, objective disease characteristics appear to be more important in predicting quality of life than in the case of patients with CFS, whose evaluation of adaptive tasks is predictive of quality of life.

 

Source: De Ridder DT, Schreurs KM, Bensing JM. Adaptive tasks, coping and quality of life of chronically ill patients: the cases of Parkinson’s disease and chronic fatigue syndrome. J Health Psychol. 1998 Jan;3(1):87-101. Doi: 10.1177/135910539800300107. http://www.ncbi.nlm.nih.gov/pubmed/22021345

 

Outcomes of occupational stressors on nurses: chronic fatigue syndrome–related symptoms

Abstract:

Considering the types and number of occupational stressors involved in caring for patients, nurses may represent a population at high risk for physical illnesses.

A sample of 3400 nurses who belong to a statewide or a national nurses organization were randomly chosen for participation. Of this group, 202 reported 6 months or more of debilitating fatigue and completed a three-page questionnaire assessing symptoms related to chronic fatigue syndrome (CFS) and comorbid medical conditions. This group (N = 202) was mailed a follow-up questionnaire 1 year later that reassessed symptoms of CFS and occupational stressors.

Many sampled nurses reported a high degree of occupationally related stress but did not report CFS symptoms; however, perceived exposure to the threat of an accident as a nurse and poor physical working conditions were significantly related to symptoms reported. These findings are consistent with previous research.

 

Source: Wagner LI, Jason LA. Outcomes of occupational stressors on nurses: chronic fatigue syndrome–related symptoms. Nursingconnections. 1997 Fall;10(3):41-9. http://www.ncbi.nlm.nih.gov/pubmed/9397874

 

Demonstration on Borna disease virus in patients with chronic fatigue syndrome

Abstract:

Chronic fatigue syndrome (CFS), a recently named heterogeneous disorder, is an illness of unknown etiology. The association between CFS and several viral infection has been suggested. Here, we centered on the possible link between CFS and Borna disease virus (BDV) infection.

BDV is a neurotropic, nonsegmented negative-strand (NNS) RNA virus. Recent epidemiological data have suggested that BDV may be closely associated with depression and schizophrenia in humans.

In Japanese patients with CFS, the prevalence of BDV infection was 34% (30/89) and 12% (7/57) by immunoblotting and PCR analysis, respectively. Furthermore, anti-BDV antibodies and BDV RNA were detected in a family cluster with CFS. These results suggested that this virus contributes to or initiates CFS, although the single etiologic role of BDV is unlikely.

 

Source: Nakaya T, Kuratsune H, Kitani T, Ikuta K. Demonstration on Borna disease virus in patients with chronic fatigue syndrome. Nihon Rinsho. 1997 Nov;55(11):3064-71. [Article in Japanese] http://www.ncbi.nlm.nih.gov/pubmed/9396313

 

Cognitive deficits in patients suffering from chronic fatigue syndrome, acute infective illness or depression

Abstract:

BACKGROUND: Patients with chronic fatigue syndrome (CFS) report neuro-psychological symptoms as a characteristic feature. We sought to assess cognitive performance in patients with CFS, and compare cognitive performance and subjective workload experience of these patients with that of two disease comparison groups (non-melancholic depression and acute infection) and healthy controls.

METHOD: A computerized performance battery employed to assess cognitive functioning included tests of continuous attention, response speed, performance accuracy and memory. Severity of mood disturbance and subjective fatigue were assessed by questionnaire.

RESULTS: All patient groups demonstrated increased errors and slower reaction times, and gave higher workload ratings than healthy controls. Patients with CFS and non-melancholic depression had more severe deficits than patients with acute infection. All patient groups reported more severe mood disturbance and fatigue than healthy controls, but patients with CFS and those with acute infection reported less severe mood disturbance than patients with depression.

CONCLUSIONS: As all patients demonstrated similar deficits in attention and response speed, it is possible that common pathophysiological processes are involved. The differences in severity of mood disturbance, however, suggest that the pathophysiological processes in patients with CFS and acute infection are not simply secondary to depressed mood.

 

Source: Vollmer-Conna U, Wakefield D, Lloyd A, Hickie I, Lemon J, Bird KD, Westbrook RF. Cognitive deficits in patients suffering from chronic fatigue syndrome, acute infective illness or depression. Br J Psychiatry. 1997 Oct;171:377-81. http://www.ncbi.nlm.nih.gov/pubmed/9373430

 

Post-Lyme syndrome and chronic fatigue syndrome. Neuropsychiatric similarities and differences

Abstract:

BACKGROUND: Patients with chronic fatigue syndrome (CFS) and post-Lyme syndrome (PLS) share many features, including symptoms of severe fatigue and cognitive difficulty.

OBJECTIVE: To examine the neuropsychiatric differences in these disorders to enhance understanding of how mood, fatigue, and cognitive performance interrelate in chronic illness.

METHODS: Twenty-five patients with CFS, 38 patients with PLS, and 56 healthy controls participated in the study. Patients with CFS met 1994 criteria for CFS and lacked histories suggestive of Lyme disease. Patients with PLS were seropositive for Lyme disease, had met the Centers for Disease Control and Prevention criteria, or had histories strongly suggestive of Lyme disease and were experiencing severe fatigue that continued 6 months or more following completion of antibiotic treatment for Lyme disease. All subjects completed self-report measures of somatic symptoms and mood disturbance and underwent neuropsychological testing. All patients also underwent a structured psychiatric interview.

RESULTS: Patients with CFS and PLS were similar in several somatic symptoms and in psychiatric profile. Patients with CFS reported more flulike symptoms than patients with PLS. Patients with PLS but not patients with CFS performed significantly worse than controls on tests of attention, verbal memory, verbal fluency, and motor speed. Patients with PLS without a premorbid history of psychiatric illness did relatively worse on cognitive tests than patients with PLS with premorbid psychiatric illness compared with healthy controls.

CONCLUSIONS: Despite symptom overlap, patients with PLS show greater cognitive deficits than patients with CFS compared with healthy controls. This is particularly apparent among patients with PLS who lack premorbid psychiatric illness.

 

Source: Gaudino EA, Coyle PK, Krupp LB. Post-Lyme syndrome and chronic fatigue syndrome. Neuropsychiatric similarities and differences. Arch Neurol. 1997 Nov;54(11):1372-6. http://www.ncbi.nlm.nih.gov/pubmed/9362985

 

Chronic fatigue syndrome in children. All studies must be subjected to rigorous scrutiny

Editor—Over the years, the ME Association has noted that some of those writing in the BMJ make assumptions about the views of organisations concerned with myalgic encephalomyelitis. These assumptions concern the organisations’ views about the aetiology and treatment of the disease. We wish to put the record straight as regards the position of the ME Association. We do not regard the mind-body issue as clear cut. We accept that, as in any long term disabling illness, symptoms will include both physical and psychological components, and we make this clear in our literature. We find unacceptable the often voiced assumption that our views on aetiology and treatment are coloured by prejudice against psychological illness or a wish to stigmatise such illnesses as less valid than physical illness. All illness, whatever the cause, is legitimate, and patients with that illness are worthy of respect and acceptance.

You can read the rest of this article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127598/pdf/9361555.pdf

 

Source: Hume M. Chronic fatigue syndrome in children. All studies must be subjected to rigorous scrutiny. BMJ. 1997 Oct 11;315(7113):949. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127598/

 

Chronic fatigue syndrome in children. Patient organisations are denied a voice

Comment on: Managing chronic fatigue syndrome in children. [BMJ. 1997]

 

Editor—Action for ME is one of the two patient support groups referred to in “editor’s choice” in the issue of 7 June. The organisation, which represents 8000 members, accepts that any illness can have both physical and psychological components. In fact, for the past five years it has offered psychological support in the form of professional telephone counselling, and our journal has carried numerous articles testifying to a more complex understanding than the editor implies.

What we have a problem with, however, is some medical journals’ overemphasis on psychological factors when they refer to myalgic encephalomyelitis. Provocative features about hysteria and wandering wombs have not helped.1 Because of the possibility of cognitive malfunction,2 we believe that getting better is more complex that letting go of “symptom dependency” and “therapeutic nihilism”—terms that are frequently used in research attempting to show that abnormalities are not components of a primary pathological process but are secondary to behavioural aspects of myalgic encephalomyelitis, such as reduced physical activity.

You can read the rest of this comment here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127601/pdf/9361554.pdf

 

Source: Jacobs G. Chronic fatigue syndrome in children. Patient organisations are denied a voice. BMJ. 1997 Oct 11;315(7113):949. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127601/

 

Chronic fatigue syndrome in children. Journal was wrong to criticise study in schoolchildren

Comment on: Managing chronic fatigue syndrome in children. [BMJ. 1997]

Editor—In his editorial on managing the chronic fatigue syndrome in children Harvey Marcovitch implies that a 37% response rate to our questionnaire about long term sickness absence in schools was poor and insufficiently explained, and he states that we overinterpreted the resulting data.1 2

You can read the full comment here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127623/pdf/9361553.pdf

 

Source: Dowsett EG, Colby J. Chronic fatigue syndrome in children. Journal was wrong to criticise study in schoolchildren. BMJ. 1997 Oct 11;315(7113):949. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127623/

 

Graded exercise in chronic fatigue syndrome. Chronic fatigue syndrome is heterogeneous condition

Comment on: Randomised controlled trial of graded exercise in patients with the chronic fatigue syndrome. [BMJ. 1997]

 

Editor—The study reported by Kathy Y Fulcher and Peter D White will provide new hope to many patients diagnosed as having the chronic fatigue syndrome.1 Before exercise regimens become the treatment of choice, however, it is worth noting that over two fifths of the patients in the study reported no or little improvement. It is a pity that the researchers did not compare those who were “very much better” with those who were not, in terms of variables such as the onset of illness (acute or gradual, history of infection) 2 and the presence of additional symptoms frequently associated with the syndrome—for example, cognitive difficulties, nausea, and malaise after exercise. This might have shown whether one particular subgroup fared better than another, allowing doctors to tailor their advice and further improve patients’ care.3

The possibility that subgroups may have different prognoses also deserves consideration. For instance, a recent study found that 70% of patients diagnosed as having epidemic neuromyasthenia recovered within two years.4 If two thirds of the subjects studied by Fulcher and White also had disease of acute onset linked to infection, one could argue that the exercise regimen reflected the natural course of the illness while the flexibility training made patients worse.

A final point concerns the 20 subjects taking full dose antidepressants. The authors do not specify why these drugs were being taken by people who did not have clinical depression or sleep disorders. Moreover, since many patients with the chronic fatigue syndrome cannot tolerate therapeutic doses of antidepressants,5 some of the reported fatigue and malaise may have been drug induced.

You can read the rest of this comment here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127599/pdf/9361552.pdf

 

Source: Goudsmit EM. Graded exercise in chronic fatigue syndrome. Chronic fatigue syndrome is heterogeneous condition. BMJ. 1997 Oct 11;315(7113):948. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2127599/