Fatigue in persons with renal failure who require maintenance haemodialysis

Fatigue is a highly prevalent symptom experienced by persons who live with chronic illness, including those with renal failure who require maintenance haemodialysis. Fatigue, however, is a non-specific and invisible symptom and is a phenomenon that is poorly understood by health care professionals. This study examined the symptom of fatigue as experienced by a group of 39 adult haemodialysis patients. The theory of unpleasant symptoms formed the conceptual framework for the study. A descriptive correlational design was utilized to examine fatigue from an inductive approach, considering relevant physiological, psychological and situational variables based on a review of the literature. Data were collected using a structured self-report questionnaire and biochemical data from retrospective monthly blood tests. The results of the study indicated that high levels of fatigue are experienced, with correspondingly low levels of vitality, in all the areas measured - general fatigue, physical fatigue, reduced motivation, reduced activity and mental fatigue, by adult haemodialysis patients. Individual variation was noted in the dimensions of fatigue predominantly expressed. Fatigue was significantly associated with the presence of symptoms such as sleep problems, poor physical health status and depression. No associations between fatigue and the biochemical and situational variables measured were noted. Further examination of the data revealed complex relationships between the physiological and psychological factors examined. Depression was significantly associated with physical health status, sleep problems, symptoms and anxiety. Correlations were also noted between symptoms and poor physical functioning, sleep problems and depression. Based on the results, a revised version of the theory of unpleasant symptoms relating to fatigue is presented.

Population outbreaks in a discrete world

We present and analyze a simple three-patch host-parasitoid model where population growth is discrete. The model gives solutions that are qualitatively similar to the stable large-amplitude patterns in space found in reaction-diffusion theory. In the context of host-parasitoid interactions, the large-amplitude portions of the solution can be thought of as spatially localized host population outbreaks. Here, we show that the biological requirements for localized population outbreaks in a discrete world are identical to those found in reaction- diffusion theory. Furthermore, the model conveniently allows investigation into the robustness of these population outbreaks under the influence of density-dependent dispersal behavior. We find that localized population outbreaks in space can still occur with modest amounts of pursuit and aggregative behavior by parasitoids. We end by showing that evidence from a real host-parasitoid system is consistent with the predictions of the model.

Suicide within 12 months of contact with mental health services: national clinical survey

OBJECTIVE

To describe the clinical circumstances in which psychiatric patients commit suicide.

DESIGN

National clinical survey.

SETTING

England and Wales.

SUBJECTS

A two year sample of people who had committed suicide, in particular those who had been in contact with mental health services in the 12 months before death.

MAIN OUTCOME MEASURES

Proportion of suicides in people who had had recent contact with mental health services; proportion of suicides in inpatients; proportion of people committing suicide and timing of suicide within three months of hospital discharge; proportion receiving high priority under the care programme approach; proportion who were recently non-compliant and not attending.

RESULTS

10 040 suicides were notified to the study between April 1996 and March 1998, of whom 2370 (24%; 95% confidence interval 23% to 24%) had had contact with mental health services in the year before death. Data were obtained on 2177, a response rate of 92%. In general these subjects had broad social and clinical needs. Alcohol and drug misuse were common. 358 (16%; 15% to 18%) were psychiatric inpatients at the time of death, 21% (17% to 25%) of whom were under special observation. Difficulties in observing patients because of ward design and nursing shortages were both reported in around a quarter of inpatient suicides. 519 (24%; 22% to 26%) suicides occurred within three months of hospital discharge, the highest number occurring in the first week after discharge. 914 (43%; 40% to 44%) were in the highest priority category for community care. 488 (26% excluding people whose compliance was unknown; 24% to 28%) were non-compliant with drug treatment while 486 (28%; 26% to 30%) community patients had lost contact with services. Most people who committed suicide were thought to have been at no or low immediate risk at the final service contact. Mental health teams believed suicide could have been prevented in 423 (22%; 20% to 24%) cases.

CONCLUSIONS

Several suicide prevention measures in mental health services are implied by these findings, including measures to improve compliance and prevent loss of contact with services. Inpatient facilities should remove structural difficulties in observing patients and fixtures that can be used in hanging. Prevention of suicide after discharge may require earlier follow up in the community. Better suicide prevention in psychiatric patients is likely to need measures to improve the safety of mental health services as a whole, rather than specific measures for people known to be at high risk.

Mental disorder and clinical care in people convicted of homicide: national clinical survey

OBJECTIVES

To estimate the rate of mental disorder in those convicted of homicide and to examine the social and clinical characteristics of those with a history of contact with psychiatric services.

DESIGN

National clinical survey.

SETTING

England and Wales.

SUBJECTS

Eighteen month sample of people convicted of homicide.

MAIN OUTCOME MEASURES

Offence related and clinical information collected from psychiatric court reports on people convicted of homicide. Detailed clinical data collected on those with a history of contact with psychiatric services.

RESULTS

718 homicides were reported to the inquiry between April 1996 and November 1997. Of the 500 cases for whom psychiatric reports were retrieved, 220 (44%; 95% confidence interval 40% to 48%) had a lifetime history of mental disorder, while 71 (14%; 11% to 17%) had symptoms of mental illness at the time of the homicide. Of the total sample, 102 (14%; 12% to 17%) were confirmed to have been in contact with mental health services at some time, 58 (8%; 6% to 10%) in the year before the homicide. The commonest diagnosis was personality disorder (20 cases, 22%; 13% to 30%). Alcohol and drug misuse were also common. Only 15 subjects (18%; 10% to 26%) were receiving intensive community care, and 60 (63%; 53% to 73%) were out of contact at the time of the homicide.

CONCLUSIONS

There are substantial rates of mental disorder in people convicted of homicide. Most do not have severe mental illness or a history of contact with mental health services. Inquiry findings suggest that preventing loss of contact with services and improving the clinical management of patients with both mental illness and substance misuse may reduce risk, but clinical trials are needed to examine the effectiveness of such interventions.

On the stabilizing role of stage structure in piscene consumer-resource interactions

A stage-structured consumer-resource model is investigated using plausible biological parameter estimates. The model, developed from patterns in energy allocation across fish life-history strategies, explicitly considers the effects of delays in maturation on juvenile growth and mortality. It is found that stage structure in the consumer fish population tends to locally stabilize consumer-resource dynamics for realistic parameters. Additionally, it is shown that stage structure bounds nonequilibrium behavior relative to the case without stage structure. Finally, it is shown that the increased stability and bounding of solutions has the seemingly paradoxical consequence of promoting nonequilibrium dynamics when even small amounts of noise are added to the system.

Planning health care for people with HIV infection and AIDS

In recent years planners of health services have been urged to design a comprehensive range of services which are responsive to the needs of people with HIV infection and AIDS and those who might be worried about HIV transmission. Models of care have been tried and tested and pilot services which aim to inform the development of the services scrutinised. Though in general this community care is seen as the preferred option with adequate backup support from acute services. More than anything, there is a recognition that the service must be responsive to local needs. Because patterns of HIV infection and prevalence of AIDS are so variable there is no substitute for the systematic development of timely local knowledge as the basis of local planning.

An examination of touch between nurses and elderly patients in a continuing care setting in Northern Ireland

The use of touch is an inherent part of nursing practice. This investigation examined the amount and type of touch received by elderly patients from nurses. It also attempted to assess elderly patients' perceptions of instrumental and expressive touch given by nurses. The Extended Model of Interpersonal Interaction formed the conceptual framework for the study. Non-participant observation and semi-structured interviews were the methods employed for data collection. Results tentatively suggest that most nurse-patient touch interactions in a care of the elderly ward are instrumental in nature. Expressive touches are predominantly given to body extremities. The gender of the nurse initiating touch and the part of the body touched influence the elderly patients' perception of the touch interaction. In particular, expressive touching behaviours by nurses that involve the leg, face and around the shoulders are perceived as uncomfortable. The only touching behaviour perceived as comfortable by all respondents was instrumental touching of the arm and shoulder by a female nurse. Elderly patients may misinterpret the goal or the motivation behind touch initiation by a nurse. Therefore, an awareness and a sensitivity towards elderly patients' needs and desires for tactile communication are required by nurses.

Intergeneric conjugation in Thiobacillus versutus

In plate matings with Escherichia coli HB101/pUW965::Tn5 (KmR) Thiobacillus versutus reacted as an efficient recipient, producing 10(-2) to 10(-3) kanamycin resistant (KmR) T. versutus exconjugants per donor cell. Analysis of agarose gels of plasmid DNA extracted from the exconjugants confirmed that the suicide vector pUW964 did not persist in the recipient, implying that the kanamycin resistance of the exconjugants is based on effective transposition of Tn5 in T. versutus as well as function of the E. coli kanamycin gene. Transfer was equally efficient when a nalidixate-resistant T. versutus mutant was used as recipient. Hybridization evidence for the presence of Tn5 was consistently negative. The significance of this anomalous result is discussed.

Attitudes towards and use of general practitioner services among homosexual men with HIV infection or AIDS

In a study of 263 homosexual men positive for the human immunodeficiency virus (HIV), it was found that 87% were registered with a general practitioner and of these, 55% said that the general practitioner knew their HIV status. Of the 104 men who had experienced symptoms, 39% had consulted the general practitioner for HIV-related advice. A total of 49% of those who were not registered used a specialist outpatient clinic for all their medical needs. Of those who were registered and whose general practitioner was aware of their HIV status but who did not consult their doctor, 72% used a specialist outpatient clinic. Reasons for not consulting the general practitioner included fears of breach of confidentiality and lack of confidence in the general practitioner's understanding of HIV. Fifteen per cent of the sample continued to see a general practitioner who was unaware of their HIV status, for non-HIV related advice. The needs of patients must be taken into account when planning more integrated hospital and community care for those with HIV infection or the acquired immune deficiency syndrome (AIDS).

The role of informal carers in supporting gay men who have HIV related illness: what do they do and what are their needs?

Despite calls for a shift from hospital to community based care for people with HIV infection there has been some speculation about whether the facilities will actually be available. One central element of community care is informal care. Structured interviews with 125 people who were supporting gay men with HIV related illness including AIDS (hereafter PWA) provide information about the characteristics of people who were helping on an informal basis, what they did, and what support they needed for themselves. It was mostly male friends and partners who were offering support. Half the carers were carrying out specific physical tasks, though much of the support was more general, particularly emotional support. Where both people had experienced symptoms some reciprocity of caring was taking place. Resistance to being labelled a 'carer' was evident. Carers felt themselves inadequately supported both practically and emotionally and were specific about what could be done to change this.

The work of a specialist AIDS home support team: the views and experiences of patients using the service

The work of a specialist AIDS home support team whose role is to ensure continuity of care between hospital and community for patients with HIV infection is viewed from the patients' perspective. Information comes from a wider interview study in which 265 gay men positive for HIV were asked about their perceptions of and satisfaction with a variety of different services. Of the group, 119 (46%) reported involvement with the home support team. The team was seen as providing links between patients, the hospital and the community, as well as offering security for those who expected to need help in the future. For the most part, the team were seen in a favourable light when compared to other professionals and 53% felt they received a considerable amount of reassurance and support from them.

The experience of having a positive HIV antibody test

Little is known about the logistics of taking an HIV antibody test and yet knowledge of people's experiences of having a test result is helpful to evolving a sensitive and client oriented service and can provide some guidelines for organisation issues around testing. This paper reports the experiences of 252 gay men who had an HIV test which proved to be positive. The most frequent reasons for people to take a test were perception of personal risk or were related to perceived health problems. Ten per cent of people did not know they had had a test until they were told they were anti HIV positive--lack of knowledge was related mostly to the place where the test was done. Over one third of people said they knew little about the test or its implications before they contacted anyone, over half said they did not receive information at the time of the test and 41% when they were given the result. There were few changes over time in the experience of having a test.

AIDS in the Nineties: from science to policy. Care in the community and by the community

As the numbers of people with HIV infection increase the favoured option for care in the future is to increase community and home care. Without doubt also the statutory services have recognized the need to make prevention, educational and care services sensitive and appropriate to the client group they aim to serve and many unconventional systems are being put into place in order to do this. The reality of community care is so often care by the family and volunteers and there has to be some attempt to support informal carers materially and emotionally. Without the work of these groups it would be impossible for governmental or formal agencies to provide the necessary degree of quality of care. It would seem that a combination of pressure from the 'communities' affected by HIV/AIDS and flexibility in providing care by statutory and voluntary groups has made it possible to provide different schemes of community care or at least made suitable service delivery happen more quickly and more appropriately than might otherwise have been the case. There was some feeling at the conference that it would be comforting to think that some of these innovations, hard won for HIV/AIDS, could be replicated for groups of patients in the community who may not have such a vocal advocacy group to back them.

Role of scintigraphy in establishing optimal perfusion in hepatic arterial infusion pump chemotherapy

Since 1982, physicians at the Medical College of Ohio, Toledo, have performed 41 hepatic intraarterial chemotherapy infusion pump implantations for palliative treatment of metastatic liver disease from various primary tumors of the gastrointestinal tract. Radionuclide hepatic arterial pump imaging has proven to be a very reliable, cost-effective, and uncomplicated method of evaluating liver perfusion as it relates to pump function, catheter integrity, and positioning. Confirmation of satisfactory hepatic perfusion is the key to acceptable treatment by this modality. In combination with periodic computed tomography (CT) scanning and CEA determinations, scintigraphy plays a major role in establishing effective therapy and aids in determining causal factors behind treatment failures.

Oil wives and intermittent husbands

An investigation was conducted in the Aberdeen area on wives of oil men working either off-shore or on-shore. No differences were found in measures of general health; but 'off-shore wives' were shown to experience mood and behavioural changes, linked to the pattern of swiftly recurring partings and reunions. While a majority of such wives appeared to tolerate or even thrive on their style of life, 10% had reactions sufficiently pronounced to deserve the label of Intermittent Husband Syndrome or 'caseness'. Many others would have benefited from more effective preventive and support services.

The psycho-social consequences of intermittent husband absence: an epidemiological study

This paper examines the psycho-social effects on wives of their husbands' intermittent absence on off-shore oil rigs. It is based on data gathered from a random sample of wives living in the Aberdeen area, and it proceeds in three stages. The analysis begins with a comparison between wives whose husbands work on- and off-shore, it goes on to examine differential reaction to husband absence in the off-shore group and concludes with an attempt to estimate prevalence of the 'intermittent husband syndrome'. All the available evidence suggests that the psycho-social effects of intermittent husband absence have been exaggerated. The mental and physical health of wives of men working off-shore was similar in most respects to the health of wives whose husbands work on-shore. Within the sample of wives whose husbands worked off-shore those most affected by intermittent husband absence were 'Novices' (newly married wives with preschool children and no previous experience of husband absence), those with outside employment and those experiencing irregular absences. But even among such groups with fairly pronounced mood and behaviour changes there was little evidence of raised levels of morbidity. When defined in terms of specified levels of reactivity, marital conflict and morbidity prevalence of the 'intermittent husband syndrome' was found to be around 10%.

Facilitation of kindled seizures in rats fed choline-supplemented diets

Different groups of rats were maintained on choline-deprived (CD), choline-supplemented (CS) or standard rat chow diets beginning at a body weight of approximately 100 g, and electrically kindled in the amygdala beginning not less than 40 days later. The CS group kindled significantly faster than the CD group, whereas the CD and chow-fed groups did not differ in their rate of kindling. This result is consistent with both the known effects of the dietary manipulation of choline on brain acetylcholine level, and the idea that acetylcholine has a role in amygdaloid kindling.