Gas-Phase Synthesis for Label-Free Biosensors: Zinc-Oxide Nanowires Functionalized with Gold Nanoparticles.

Metal oxide semiconductor nanowires have important applications in label-free biosensing due to their ease of fabrication and ultralow detection limits. Typically, chemical functionalization of the oxide surface is necessary for specific biological analyte detection. We instead demonstrate the use of gas-phase synthesis of gold nanoparticles (Au NPs) to decorate zinc oxide nanowire (ZnO NW) devices for biosensing applications. Uniform ZnO NW devices were fabricated using a vapor-solid-liquid method in a chemical vapor deposition (CVD) furnace. Magnetron-sputtering of a Au target combined with a quadrupole mass filter for cluster size selection was used to deposit Au NPs on the ZnO NWs. Without additional functionalization, we electrically detect DNA binding on the nanowire at sub-nanomolar concentrations and visualize individual DNA strands using atomic force microscopy (AFM). By attaching a DNA aptamer for streptavidin to the biosensor, we detect both streptavidin and the complementary DNA strand at sub-nanomolar concentrations. Au NP decoration also enables sub-nanomolar DNA detection in passivated ZnO NWs that are resilient to dissolution in aqueous solutions. This novel method of biosensor functionalization can be applied to many semiconductor materials for highly sensitive and label-free detection of a wide range of biomolecules.

Surgical nurses' attitudes towards caring for patients dying of cancer - a pilot study of an educational intervention on existential issues.

This is a randomised controlled pilot study using a mixed methods design. The overall aim was to test an educational intervention on existential issues and to describe surgical nurses' perceived attitudes towards caring for patients dying of cancer. Specific aims were to examine whether the educational intervention consisting of lectures and reflective discussions, affects nurses' perceived confidence in communication and to explore nurses' experiences and reflections on existential issues after participating in the intervention. Forty-two nurses from three surgical wards at one hospital were randomly assigned to an intervention or control group. Nurses in both groups completed a questionnaire at equivalent time intervals: at baseline before the educational intervention, directly after the intervention, and 3 and 6 months later. Eleven face-to-face interviews were conducted with nurses directly after the intervention and 6 months later. Significant short-term and long-term changes were reported. Main results concerned the significant long-term effects regarding nurses' increased confidence and decreased powerlessness in communication, and their increased feelings of value when caring for a dying patient. In addition, nurses described enhanced awareness and increased reflection. Results indicate that an understanding of the patient's situation, derived from enhanced awareness and increased reflection, precedes changes in attitudes towards communication.

The experience of working on a locked acute psychiatric ward.

This study's aim was to elucidate health-care staff experience of working on a locked acute psychiatric ward. In many countries changes in health care has contributed to fewer beds available in inpatient care, and a concentration of patients with severe psychiatric conditions. This implies a changing work environment in acute psychiatric care. Qualitative interviews with health-care staff (n= 10) were carried out on a ward for patients with affective disorder and eating disorder in a Swedish hospital. Qualitative content analysis was used. Four themes were identified from the data: 'undergoing changes in care delivery', 'feeling a need for security and control', 'managing the demands at work' and 'feeling a sense of responsibility'. This study adds to earlier research into how a sense of responsibility can place a significant burden on health-care staff working on a locked psychiatric ward and also contribute to increased control of patients. This study also shows that relationships and power structures among health-care staff need to be addressed when organizational changes are made in care delivery. Further research is needed to reach a comprehensive understanding of care on locked acute psychiatric wards, including a development of nursing and medicine as knowledge domains in one common context.

Outcomes of an educational intervention for the family of a person with bipolar disorder: a 2-year follow-up study.

This study aimed to analyse the outcomes of an educational intervention for family members living with a person with bipolar disorder. A longitudinal study was conducted comprising a 10-session educational intervention designed for families with members in outpatient mental health care. Thirty-four family members agreed to participate. Data were collected on five occasions, at baseline and during a 2-year follow-up through self-assessment instruments: the Carers of Older People in Europe Index, the Jalowiec Coping Scale-40, the Sense of Coherence questionnaire and the Social Adaptation Self-evaluation Scale. The results showed that the condition had a considerable negative impact on the family members as carers, but the educational intervention increased their understanding, which facilitated the management of their lives. A significant improvement in stress management was seen over time and social functioning was retained. The study showed that families living with one member with bipolar disorder benefited from the educational intervention in terms of increasing understanding of the condition and reducing stress. Mental health care needs to develop educational interventions further and offer the families support to strengthen their ability to manage with the situation.

Significant improvement in quality of life of patients with incurable cancer after designation to a palliative homecare team.

The aims of this study were to describe and compare quality of life before and after designation to a palliative homecare team in patients with different cancer diagnoses and to identify pre-designation predictors of post-designation global quality of life. We measured patients' quality of life 1 week before designation and 11 days (median time) after with the Assessment of Quality of life at the End of Life (Axelsson & Sjödén 1999). Of 163 eligible patients 63 participated without attrition. Patients' quality of life improved in the physical, psychological, medical and global areas. Six items significantly improved: hours recumbent during the day (P = 0.009), nausea (P = 0.008), anxiety (P = 0.007), getting hold of staff (P = 0.000), received care (P = 0.003) and global quality of life (P = 0.023). Depression/low in mood (r = 0.55) and meaningfulness (r = 0.70) associated to global quality of life. Furthermore, pain (P = 0.028) and meaningfulness (P = 0.028) predicted global quality of life. In the existential area, it is important to further explore how meaningfulness is associated to and predicts global quality of life.

Daily assessment of stressful events and coping among post-menopausal women with breast cancer treated with adjuvant chemotherapy.

The purpose of the study was twofold: to examine what type of daily stressful events post-menopausal woman with breast cancer experience during adjuvant chemotherapy and how bothersome these are and to identify coping strategies used by these women used to manage such stressful events. The patient group comprised 75 consecutively invited women (>or=55 years of age) at two university hospitals and one county hospital in Sweden. The Daily Coping Assessment was used to collect data over time. Data were analysed both qualitatively and quantitatively. Six categories of stressful events were identified: 'nausea and vomiting', 'fatigue', 'other symptoms', 'isolation and alienation', 'fear of the unknown' and 'being controlled by the treatment'. The first three categories were subsumed under the domain physical problems and the latter three under psychosocial problems. Almost 30% of the diary entries recorded no stressful event. Physical problems were three times as frequent as psychosocial problems. 'Nausea/vomiting' was the most frequently observed stressful event (21.6%). 'Isolation and alienation' and 'fear of the unknown' were less frequent, but when they occurred they were rated as the most distressing. Several coping strategies were used to manage each stressful event. The most common strategies were acceptance, relaxation and distraction. Religion was rarely used as a coping strategy.

Glycaemic control and diabetes care utilization in young adults with Type 1 diabetes.

OBJECTIVES: To explore how glycaemic control in young adults is related to diabetes care utilization during the transition to adult diabetes care and if these variables differ between males and females. METHODS: This is a retrospective, longitudinal design following patients' records from age 18-24 years. Adolescents (n = 104) connected to one paediatric outpatient clinic and referred to six different adult clinics were included. Data were collected regarding gender, age at diagnosis and transfer, yearly glycated haemoglobin (HbA(1c)) and body mass index, severe hypoglycaemia and diabetic ketoacidosis, retinopathy and diabetes care utilization. RESULTS: HbA(1c) decreased over time in females (P = 0.004) but not in males. Less than 10% had HbA(1c) in the recommended range during the study period. The decrease in severe hypoglycaemia and diabetic ketoacidosis was not significant. The prevalence of background retinopathy increased from 5 to 29% during the study period (P < 0.001). Mean transfer age was 19.8 years. The youths visited the paediatric clinic more often than the adult clinic (P < 0.001) and females visited adult care more often than males (P = 0.04). There was a steady decrease in the number of visits/year over time (P < 0. 001). Poor glycaemic control was associated with more visits for both males and females (P = 0.005) in adult care. CONCLUSIONS: As there was no gender difference in the relation between HbA(1c) and the number of visits in adult diabetes care, the higher frequency of visits in adult care for females cannot be solely explained by their glycaemic control. Gender differences regarding diabetes care utilization should be further explored.

Caregivers' perceptions about terminally ill family members' quality of life.

Caregivers' perceptions on terminally ill family members' quality of life is rarely described. The aim of this study was to describe caregivers' perceptions about terminally ill family members' quality of life when suffering from cancer. Four caregivers participated in repeated focus group, and the data were analysed using qualitative content analysis. The findings were presented through five themes: 'living a normal life', 'being relieved from burdens', 'having a sense of belonging', 'being a symbol of incurable illness' and 'having a sense of dignity'. We found that to manage daily life it was significant to keep up a normal life and participate in social life. One new insight in this study was that caregivers contributed to an extending understanding to the term meaning in which the sense of belonging was fundamental. An obstacle for the sense of belonging was illuminated as the visible signs of incurable illness that stigmatized the ill person, and influenced the dignity. This study highlights the importance of supportive actions from significant others and healthcare professionals for terminally ill family members' quality of life.

Encounters in a locked psychiatric ward environment.

This focused ethnographic study aims at describing encounters in the healthcare environment on a locked psychiatric ward. It was carried out in Sweden on an acute psychiatric ward for patients with affective and eating disorders. Data were collected through participant observations and informal interviews, and analysed by qualitative content analysis. The result shows that the healthcare environment on this locked psychiatric ward offered a space for encounters between people, in a continuum from professional care to private meetings and social events. It included joy and friendship as well as unintentional insights into other patients' suffering. The characteristics of the encounters formed three themes: the caring relationship, the uncaring relationship and the unrecognized relationship. The caring and the uncaring relationship concerned relationships between staff and patients or their next of kin. These revealed contrasting qualities such as respect and flexibility as well as lack of respect and mistrust. The unrecognized relationship theme visualized the patients' relationships with each other and included both supportive and intrusive elements that were probably significant for the outcome of care. The unrecognized relationship contributes with new knowledge about conditions for patients in inpatient care, and indicates that the patients' relationships with each other merit greater attention.

Nursing and public health in Europe -- a new continuous education programme.

The aim of this paper is to describe the development of a new education programme in public health for nurses in the European Union (EU). The project, 'Development of a Continuous Professional Education Programme for Nurses in Public Health', is described together with its background and aim, which is to contribute to the development of new competencies of nurses in nursing and public health. For the development of these competencies, the framework for the programme's guidelines is organized around core modules common for all EU countries and elective modules, based on national health needs and policies proposed by each country. An example of the implementation of the programme from Sweden, where the programme has already been offered, is also presented. In addition to the educational programme itself, the opportunities for networking for nurses and teachers from different countries resulting from this effort are discussed. Finally, the evolving nature of public health in nursing is presented in relation to the roles that nurses/midwives already perform in various countries and situations, in order to point out the potential of this programme's contribution to the promotion of health of all European citizens.

Effect of statin therapy on C-reactive protein levels: the pravastatin inflammation/CRP evaluation (PRINCE): a randomized trial and cohort study.

CONTEXT: Plasma levels of the inflammatory biomarker C-reactive protein (CRP) predict cardiovascular risk, and retrospective studies suggest that 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) may lower CRP in a manner largely independent of low-density lipoprotein cholesterol (LDL-C). However, prospective trial data directly evaluating this anti-inflammatory effect of statins are not available. OBJECTIVE: To test the hypothesis that pravastatin has anti-inflammatory effects as evidenced by CRP reduction. DESIGN, SETTING, AND PARTICIPANTS: Community-based, prospective, randomized, double-blind trial including 1702 men and women with no prior history of cardiovascular disease (primary prevention cohort) and open-label study including 1182 patients with known cardiovascular disease (secondary prevention cohort) who provided at least baseline and 12-week blood samples. The study was conducted in US office-based practices from February to December 2000. INTERVENTIONS: Participants in the double-blind primary prevention trial were randomly assigned to receive 40 mg/d of pravastatin (n = 865) or placebo (n = 837) for 24 weeks. Participants in the secondary prevention cohort received 40 mg/d of open-label pravastatin for 24 weeks. MAIN OUTCOME MEASURE: Change in CRP levels from baseline to 24 weeks. RESULTS: In the primary prevention trial, compared with placebo, pravastatin reduced median CRP levels by 16.9% (P<.001) at 24 weeks, reflecting a decrease of 0.02 mg/dL in the pravastatin group while no change in CRP levels was observed in the placebo group. This effect was seen as early as 12 weeks (median reduction in CRP with pravastatin, 14.7%; P<.001) and was present among all prespecified subgroups according to sex, age, smoking status, body mass index, baseline lipid levels, presence of diabetes, and use of aspirin or hormone replacement therapy. No significant association was observed between baseline CRP and baseline LDL-C levels, end-of-study CRP and end-of-study LDL-C levels, or change in CRP and change in LDL-C levels over time. In linear regression analyses, the only significant predictors of change in CRP on a log scale were randomized pravastatin allocation and baseline CRP levels (P<.001 for both). Similar reductions in CRP levels were observed at 12 weeks (-14.3%) and 24 weeks (-13.1%) in the secondary prevention cohort treated with pravastatin (P<.005 for both). CONCLUSIONS: In this prospective trial, pravastatin reduced CRP levels at both 12 and 24 weeks in a largely LDL-C-independent manner. These data provide evidence that statins may have anti-inflammatory effects in addition to lipid-lowering effects.

Women's narratives during the acute phase of their myocardial infarction.

AIM: The purpose of this study was to illuminate the meaning of lived experiences during the acute phase of an acute myocardial infarction (AMI). METHOD: Ten women (< 60 years old) afflicted with AMI narrated their experiences during their stay in the coronary care unit (CCU). The interview texts were interpreted using a method with a phenomenological hermeneutic approach, inspired by the philosophy of Ricoeur. The text was divided into meaning units that were condensed and abstracted. Three themes were then extracted from the text. FINDINGS: One theme was 'oneself as vulnerable' with the subthemes: 'the feeling of being dependent upon others', 'the feeling of being insulted' and 'the feeling of being a troublesome person'. Another theme was 'oneself as distanced', with the subthemes: 'not facing the reality', 'captive in an unreal situation', and 'inhibition out of concern for others'. The last theme was: 'oneself as making sense' with the subthemes: 'acquirement of some insight' and 'discovery of a new meaning with life'. CONCLUSION: The reported comprehensive understanding revealed the phenomena guilt and shame. These, in combination with the experience of being in an unreal situation and the withholding of feelings may have led to a deterioration of communication. It seems that relatives and the staff at CCU were not allowed to share the burden of being afflicted with an AMI.

Caregivers' descriptions of patients with advanced breast cancer in connection with supervision sessions in a surgical ward.

The purpose of this study was to describe the content of caregivers' (health care professionals') presentation of care situations as told at supervision sessions. For 1 year, 21 caregivers in a surgical ward of a county hospital in the middle of Sweden participated in a clinical supervision session 2 hours every third week. The participants in the supervision sessions were divided so as to form three mixed groups composed of registered nurses, practical nurses, physiotherapists, and physicians. The purpose of the supervision sessions was to give caregivers the opportunity to reflect on different care situations in a way that contributed to the development of patient care. The 38 supervision sessions were tape-recorded and transcribed verbatim. The transcripts were analyzed using a qualitative content analysis. The caregivers described difficult care situations focusing on the feelings of patients, relatives, and caregivers, with an emphasis on the caregivers' being dominant. Difficult care situations were described as giving caregivers feelings of discomfort, powerlessness, and reduced self-esteem. These feelings were described as arising in connection with caring for women with advanced breast cancer and other seriously ill patients in an organization lacking clear goals and rules. This study found that supervision sessions offering an opportunity to reflect on the difficult care situations are important for caregivers. These sessions seem therefore to be of vital importance for the future development of cancer care on the surgical ward.

Stress management intervention for primary prevention of hypertension: detailed results from Phase I of Trials of Hypertension Prevention (TOHP-I).

PURPOSE: Stress Management Intervention (SMI) was one of seven nonpharmacologic approaches evaluated in Phase I Trials of Hypertension Prevention (TOHP-I) for efficacy in lowering diastolic blood pressure (BP) in healthy men and women aged 30 to 54 years with diastolic BP 80-89 mm Hg. METHODS: A total of 242 and 320 participants were randomized to SMI or an "assessment only" SMI Control, respectively, at four clinical centers. The SMI consisted of 37 contact hours in 21 group and two individual meetings over 18 months and included: training in four relaxation methods, techniques to reduce stress reactions, cognitive approaches, communication skills, time management, and anger management within a general problem-solving format. Standardized protocols detailed methods and timing for collecting BP, psychosocial measures, and urinary samples from both SMI and SMI Control participants. RESULTS: In intention-to-treat analyses, although significant baseline to termination BP reductions were observed in both groups, net differences between the SMI and SMI Control groups' BP changes (mean (95% CI)) were not significant: -0.82 (-1.86, 0.22) for diastolic BP, and -0.47 (-1.96, 1.01) for systolic BP. Extensive adherence sub-group analyses found one effect: a significant 1.36 mm Hg (p = 0.01) reduction in diastolic BP relative to SMI Controls at the end of the trial for SMI participants who completed 61% or more of intervention sessions. CONCLUSIONS: While the TOHP-I SMI was acceptable to participants as evident from high levels of session completion, the absence of demonstrated BP lowering efficacy in intention-to-treat analyses suggests that the TOHP-I SMI is an unlikely candidate for primary prevention of hypertension in a general population sample similar to study participants. The isolated finding of significant diastolic BP lowering in SMI participants with higher adherence provides very weak evidence of SMI BP lowering efficacy and may be a chance finding. Whether similar or other stress management interventions can produce significant BP lowering in populations selected for higher levels of BP, stress, or intervention adherence remains to be demonstrated.

Nurses' and physicians' narratives about long-term non-malignant pain among men.

The aim of this study was to illuminate the meaning of skilled nurses' and physicians' lived experiences in their encounters with men suffering from long-term, non-malignant pain of at least 6 months duration. Seventeen nurses and four physicians participated in the study. A phenomenological-hermeneutic method was used. In the analysis three themes, 'needing to be manly', 'struggling for relief from pain' and 'needing human support' emerged. The phenomenon 'confirmation' was especially important in all three themes. This study indicates that confirmation of the theme 'needing to be manly' means that nurses' and physicians' must have such a relationship with these men that they really feel respected. Confirmation of the theme 'struggling for relief from pain' means that the care givers must convince these men that they really believe each unique individual's narratives. Confirmation of the theme 'needing human support' means that nurses and physicians have to behave in such a way that these men are convinced that the caregivers really care about them. When the men felt confirmation they dared to disclose their pain experiences more honestly. This is a preliminary prerequisite for nurses' and physicians' potential to help these men.

Men's experiences during the acute phase of their partners' myocardial infarction.

The men's narratives about the women reveal a disturbance in the balance of their daily life, showing how they, the men, perceive powerlessness, and also how they passively adapted themselves to what happened. The narratives reveal that the women are 'ignoring and withholding' their feelings and that they want to be as 'responsible and independent' as they used to be. The women are disclosed as 'not wanting to face reality': there is an enervating lack of communication.

Nurses' narrations about caring for inpatients with acute myocardial infarction.

The purpose of this study was to examine the meaning of lived experiences of caring for people affected by acute myocardial infarction. Thirty-four registered nurses at a Coronary Care Unit in the north of Sweden narrated their experiences of this specialized care of inpatients. The interview texts were transcribed and then interpreted using a phenomenological-hermeneutic method, inspired by the philosophy of Ricoeur. Two groups of texts were identified. One comprised 'narratives about the patient' within which were the themes: 'distancing oneself from what is happening' and 'showing oneself as vulnerable'. The other was 'narratives about caring', with the themes: 'reading of', 'adapting', 'coming close' and 'helping'. Various views on caring were disclosed and interpreted with reference to Martin Buber's philosophy. A comprehensive understanding of caring as oscillations between the poles distance and relation was formulated.

Living with breast cancer: care givers' perceptions in a surgical ward.

Caring for women with breast cancer has potential for increasing care giver distress and anxiety. Knowledge of the threats implicit in the disease and treatment as well as overidentification with the patient form the basis for this outcome. In order to describe perceptions of breast cancer as an illness, semistructured interviews were carried out with 37 care givers at a surgical department. The interviews were tape-recorded and transcribed verbatim. An analysis was then carried out of the stories told by the care givers about breast cancer as an illness. The results indicated that breast cancer as an illness gave rise to predominantly negative and dark associations among the care givers. Their experiences of caring for women in critical stages of the illness over many years appear to have had a negative influence on them. Death itself, and even more so the process leading to the end, were very tangible in their stories. The article concludes that care givers on a surgical ward have a fragmented picture of the patients and need to be given opportunities to follow the total care process. Those care givers who were able to follow the women's stages of illness throughout more often had a positive picture.

A rare-earth phosphor containing one-dimensional chains identified through combinatorial methods

An unusual luminescent inorganic oxide, Sr2CeO4, was identified by parallel screening techniques from within a combinatorial library of more than 25,000 members prepared by automated thin-film synthesis. A bulk sample of single-phase Sr2CeO4 was prepared, and its structure, determined from powder x-ray diffraction data, reveals one-dimensional chains of edge-sharing CeO6 octahedra, with two terminal oxygen atoms per cerium center, that are isolated from one another by Sr2+ cations. The emission maximum at 485 nanometers appears blue-white and has a quantum yield of 0.48 +/- 0.02. The excited-state lifetime, electron spin resonance, magnetic susceptibility, and structural data all suggest that luminescence originates from a ligand-to-metal Ce4+ charge transfer.

Patients' experiences of long-term oxygen therapy.

The aim of this study, which was undertaken in patients' homes in Sweden, was to describe patients' experiences in the self-management of continuous oxygen therapy and their view of managing their chronic disease. A phenomenological approach was used. Data were collected in interviews and analysis produced four categories. The findings show that the patients need help with relief for different physiological and psychological difficulties and from social isolation. The patients had insufficient resources for daily life. They were restricted to their homes, had mobility problems and were dependent upon a continuous life rhythm. Dependence upon another family member is therefore an important factor. But even with the presence of a significant other, social isolation is prevalent.