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1.
DS Ferguson 《Canadian Metallurgical Quarterly》1996,23(4):835-841
This phenomenological study was undertaken to discover the everyday meanings which clinical educators of pre-registration Bachelor of Nursing students attached to their experiences as clinical educators. The researcher employed a qualitative design using audiotaped in-depth interviews with four registered nurses employed as clinical educators in four different schools of nursing in Victoria, Australia. Using hermeneutics, thematic analysis revealed five themes of meaning central to the lived experiences of clinical educators. They are:(a) being human, (b) having standards, (c) developing own teaching style, (d) learn as you go, and (e) not belonging. The first three themes are described in the literature on clinical education, however, the latter two are unique to this research. The results of this study indicate there is need for extensive preparation and on-going support of clinical educators. The researcher, who is respectful of the enormity of the task which educators face in preparing students for practice, speculates whether clinical educators are the vanguards of student learning in the clinical field. It is evident that the participants of this study did not possess many of the role requirements of clinical educators identified in the literature. Further studies are needed which explore the link between student learning and clinical educator support. 相似文献
2.
INTRODUCTION: Multiple sclerosis (MS) is a demyelinating disorder of the CNS, of autoimmune pathology and unknown aetiology. Several theories regarding its aetiology have been suggested, although none seems to be completely convincing. Genetically predisposed persons are affected, therefore groups of MS are seen in certain families. OBJECTIVES: To describe the family links, type of illness and evolution of 12 patients from six families with two or more members diagnosed as having MS, and to evaluate any differences from the other cases recorded in our data base. PATIENTS AND METHODS: We studied 12 patients diagnosed on the criteria of Poser, and with at least one first or second degree relation with MS. We compared clinical data, form of presentation and course with 127 patients recorded in the data base. RESULTS: We describe six families: two homozygotic twins, two families in which transmission was from father to child and three families with first degree cousins affected. We found no clinical variation in the presentation, number of attacks or evolution, as compared with the other patients. Nor was there homogeneity between the familial forms of MS. CONCLUSIONS: Familial forms make up approximately 10% of the series. We do not have any data available for early diagnosis nor for prognostic significance of familial MS. 相似文献
3.
A Ghezzi GM Malvestiti S Baldini M Zaffaroni A Zibetti 《Canadian Metallurgical Quarterly》1995,242(3):123-126
Pudendal evoked potentials, motor evoked potentials of the bulbocavernosus muscle to magnetic stimulation and bulbocavernosus reflex were recorded in 34 patients with multiple sclerosis (MS). Responses were delayed in 26, 20 and 3 cases respectively. No relationship was found between neurophysiological abnormalities and the presence or severity of erectile dysfunction, showing that these tests have little diagnostic usefulness in MS patients with impotence. Nocturnal penile tumescence was assessed in 14 cases: the test result was normal in 10 patients, including 3 severely paraplegic subjects. 相似文献
4.
G Pozzessere P Rossi E Valle CP Froio AF Petrucci C Morocutti 《Canadian Metallurgical Quarterly》1997,7(6):315-319
A simple method to cultivate pollen tubes in a gelatin medium is presented. After the growth of the pollen tubes in the culture medium, they are fixed, dehydrated, and embedded in resin for ultramicrotomy. The method is easy and does not require the purchase of special materials beyond those needed for the usual techniques for studying biological specimens under transmission electron microscopy. 相似文献
5.
KP Johnson 《Canadian Metallurgical Quarterly》1996,1(6):325-326
Copolymer I (Copazone) was evaluated in a multicenter, placebo-controlled, double-blind trial at 11 universities. Two hundred and fifty-one relapsing-remitting ambulatory MS patients were randomized to receive 20 mg of copolymer I or placebo by daily subcutaneous injection for approximately 30 months. At conclusion, the copolymer I group had 32% fewer relapses (P = 0.002) and significantly more were relapse-free (P = 0.035). Significantly, more patients were receiving copolymer I had improved during the study, while more patients on placebo showed neurological decline (P = 0.001). There were few side effects and no drug related laboratory abnormalities. Copolymer I is being considered by North American and European regulatory agencies for approval as commercially available agent for the control of multiple sclerosis. 相似文献
6.
Domon L, a heat-treated component of gram-negative bacterium Achromobacter stenohalis, is used for the treatment of infectious diseases of animals. Here, we investigated the immunopotentiating potential of Domon L. In vitro studies showed that Domon L enhanced nitric oxide (NO) formation from murine macrophage RAW264.7 cells in concert with interferon (IFN)-gamma. The effect of Domon L on NF-kappaB activation was investigated, in order to understand the molecular mechanisms of enhanced NO formation by Domon L. Domon L induced translocation of NF-kappaB to the nucleus in RAW264.7 cells. Induction of NF-kappaB dependent gene expression by Domon L was further confirmed using a transfectant containing an NF-kappaB-luciferase reporter gene. In vivo injection of Domon L elevated both serum IL-6 and mucoprotein, whose gene expression is partly under the control of NF-kappaB. The spleen cells of rats treated with Domon L produced much more NO when stimulated with LPS + IFN gamma than spleen cells of untreated rats. These results suggest that Domon L acts as an anti-infectious agent via NF-kappaB activation. 相似文献
7.
This case-control study was aimed at identifying environmental risk factors for multiple-sclerosis (MS). Ninety-three Israeli-born MS patients identified in country-wide studies and 94 age- and sex-matched controls were interviewed. The questionnaire covered a large span of factors at ages 0, 10 and onset of the disease, with particular emphasis on socioeconomic status (SES) and sanitary conditions (SAN). A significantly larger percentage of patients reported frequent respiratory educational levels than controls. The SES and SAN at age 10 were also systematically higher among patients, but significance was reached only when the frequencies of conditions indicating extremely low values of SES or SAN were compared. It is possible that the protective effect of low SES or SAN on risk of MS can be detected only when living conditions are well below average, as is frequent in developing countries. 相似文献
8.
L Criddle 《Canadian Metallurgical Quarterly》1993,25(3):208-213
Acute retinal necrosis (ARN) is generally a progressive retinitis, often complicated by retinal detachment and a poor visual outcome. A series of 12 consecutive patients (13 eyes) with ARN is reported. All patients were examined early, with a limited extent of disease (in 77% of the eyes, less than 25% of retina involved). Patients were treated with high-dose intravenous acyclovir (10 mg/kg every 8 hours) and laser photocoagulation. During a follow-up period of 3 to 21 months, only 1 patient developed a rhegmatogenous retinal detachment resulting in visual loss. No patients developed bilateral disease once intravenous antiviral therapy was begun. Final visual acuity was 20/40 or better in 6 eyes (46%), and 20/400 or better in 12 eyes (92%). Two patients were examined within 6 weeks of extracapsular cataract extraction with intraocular lens implantation. In the majority of the cases, clinical findings were limited to several quadrants of the peripheral retina. Eyes with limited disease, if aggressively treated, have a relatively good visual prognosis. 相似文献
9.
Interactions between the hypothalamic-pituitary-adrenocortical (HPA) system and melatonin secretion have been demonstrated, but only the effects of melatonin on the activity of the HPA system have been studied in man. Alterations of melatonin secretion described as low-melatonin syndrome have been demonstrated in patients suffering from a major depressive episode, and an inhibitory factor on melatonin secretion has been postulated. We investigated whether corticotropin-releasing hormone (CRH), which is thought to be involved in HPA abnormalities in depressed patients, can also suppress melatonin secretion in healthy volunteers. Ten healthy male human volunteers in a double-blind study design received randomized hourly intravenous injections from 08.00 to 18.00 h that contained 10 micrograms human CRH, 1 microgram adrenocorticotropic hormone (ACTH), or placebo to simulate pulsatile hormone secretion. Plasma melatonin and cortisol responses during the treatment and nocturnal sleep electroencephalograms after the treatment were recorded. Administration of CRH reduced melatonin secretion significantly below values obtained after administration of placebo and ACTH. Cortisol secretion was significantly enhanced by ACTH in comparison to both placebo and CRH. Electroencephalographic sleep parameters revealed no treatment effects. Our findings suggest that CRH has an inhibitory effect on the pineal secretion of melatonin in normal man. A mechanism via a release of cortisol was not supported by our results. Secondary hormonal effects from changes in nocturnal sleep architecture were excluded. Further investigation of the action of CRH on melatonin secretion as well as the mutual feedback between the HPA system and the pineal gland may extend our knowledge of neuroendocrine alterations mediating the adaptive response to stress and the eventual involvement in the pathogenesis of depression. 相似文献
10.
A Guillem-Mesado C de Andrés J López-Longo S Giménez-Roldán 《Canadian Metallurgical Quarterly》1998,26(149):25-28
INTRODUCTION: It may be difficult to determine the adequate mement, the information content and the most convenient person to inform patients with chronic, incurable disorders with uncertain prognosis as sclerosis multiple (MS). MATERIAL AND METHODS: To gain information on how these aspects had been carried-out and the extent to which patients felt satisfied, we studied 60 definite MS ambulatory patients by means of a semistructured questionnaire attending a hospital-based MS unit. The results were compared with those from 40 patients with rheumatoid arthritis (RA), a chronic disabling disorder of the locomotor system with variable course, examined in a similar way. RESULTS: In the vast majority of patients (81.7 and 82.9%, respectively) in both groups the diagnosis had been delivered by a specialist, a point on which most patients agreed upon as convenient. However, most MS patients (78.4%) and nearly all of those with RA (97.6%) should have desired to receive information on their diagnosis as soon as this might had been firmly established. Though more than half the patients (61.7 of MS and 56.1% of RA) admitted to have developed depressive symptoms following information on their diagnosis, a majority expressed their desire to have been informed early about 'all the truth' regarding their prognosis (78.4 and 87.8%, respectively). CONCLUSIONS: Though data from this study should be taken with caution when applied to MS patients shortly after experiencing their first symptoms, and it is therefore unwise to give rigid rules, the vast majority of MS patients express the desire to receive early, accurate, and individualized information on their diagnosis provided by a competent specialist. 相似文献
11.
O Hellstr?m J Bullington G Karlsson P Lindqvist B Mattsson 《Canadian Metallurgical Quarterly》1998,26(3):232-237
BACKGROUND: Primary systemic amyloidosis is an uncommon disorder associated with the desposition of fragments of immunoglobulin light chains in a variety of tissues. Some patients present with peripheral neuropathy. The prognosis of these patients is not clear. METHODS: We searched the medical records of all patients seen at the Mayo Clinic between January 1, 1978 and December 31, 1994 with the diagnosis of amyloidosis. Twenty-six patients with sural nerve biopsy-proven amyloid neuropathy and a documented monoclonal protein in the serum or urine were studied. RESULTS: The most common symptoms that led to the diagnosis of primary amyloid neuropathy were paresthesias (81%), muscle weakness (65%), and numbness (58%). The median duration of symptoms before diagnosis was 29 months. Symptoms of autonomic neuropathy were present at diagnosis in 17 patients (65%). Other organs were involved in most patients. The monoclonal light chain protein detected was lambda in 18 patients (69%) and kappa in 8 (31%). The neuropathy was chronic, debilitating, and showed relentless progression. Twenty-two patients (85%) died (median survival 25 months) and 4 patients were alive at a median follow-up of 4.5 years. Progressive amyloidosis was the cause of death in most patients. Survival was significantly better in the patients with a serum albumin level >3 g/dL (median survival 31 months compared with 18 months; P <0.01, log-rank test). CONCLUSIONS: Patients with primary systemic amyloidosis in whom neuropathy is the dominant clinical manifestation often do not receive a diagnosis until years after the onset of symptoms. The prognosis is worse than previously indicated. Neuropathy does not improve with therapy. 相似文献
12.
13.
OBJECTIVE: To explore the phenomenon of memories and reported recovered memories of childhood abuse, and to examine ways in which clients and therapists assess the veridicality of such memories. METHOD: Qualitative methodology utilizing phenomenological inquiry. Within the context of a wider study exploring perceptions of helpful and unhelpful factors in the therapeutic process, a sub-sample of 36 in-depth interviews with clients, therapists, and therapists who considered themselves to have been abused as children included a focus on abuse-memory experiences. Data were analyzed according to Grounded Theory principles. RESULTS: Participants described six types of abuse-memory experiences. The most frequently reported type was where abuse was known about but kept "out of mind." The six types can be collapsed into three main categories: (1) continual knowledge of abuse (69.5%); (2) unexpected abuse-memories recovered from a prior state of partial knowledge of abuse (16.5%); and (3) abuse-memories recovered from a prior state of no knowledge of abuse (30%). Independent corroboration of recovered memories was rare; and criteria which were reportedly used to assess the veridicality of such memories were problematic when viewed in the light of cognitive psychology research on memory processes. CONCLUSION: It seems that most people who were abused as children have always had continual knowledge of this, although it is often only much later than many connect problems in adult life with the consequences of such abuse. People also experience the recovery of memories of abuse about which they were previously unaware. There is a danger that the specific controversy surrounding "false memories" may become over-generalized contributing to increased public scepticism about the prevalence and negative impact of child abuse, and the potential effectiveness of appropriate therapeutic services. 相似文献
14.
B Cannella CJ Hoban YL Gao R Garcia-Arenas D Lawson M Marchionni D Gwynne CS Raine 《Canadian Metallurgical Quarterly》1998,95(17):10100-10105
Glial growth factor 2 (GGF2) is a neuronal signal that promotes the proliferation and survival of the oligodendrocyte, the myelinating cell of the central nervous system (CNS). The present study examined whether recombinant human GGF2 (rhGGF2) could effect clinical recovery and repair to damaged myelin in chronic relapsing experimental autoimmune encephalomyelitis (EAE) in the mouse, a major animal model for the human demyelinating disease, multiple sclerosis. Mice with EAE were treated with rhGGF2 during both the acute and relapsing phases. Clinically, GGF2 treatment delayed signs, decreased severity, and resulted in statistically significant reductions in relapse rate. rhGGF2-treated groups displayed CNS lesions with more remyelination than in controls. This correlated with increased mRNA expression of myelin basic protein exon 2, a marker for remyelination, and with an increase in the CNS of the regulatory cytokine, interleukin 10, at both the RNA and protein levels. Thus, a beneficial effect of a neurotrophic growth factor has been demonstrated on the clinical, pathologic, and molecular manifestations of autoimmune demyelination, an effect that was associated with increased expression of a T helper 2 cytokine. rhGGF2 treatment may represent a novel approach to the treatment of multiple sclerosis. 相似文献
15.
OBJECTIVE: To report the occurrence, type, causes, and management of psychiatric manifestations in multiple sclerosis (MS). METHOD: Review of recent, relevant literature. RESULTS: Psychiatric illness, especially depression, occurs much more frequently than expected in patients with MS, is frequently unrecognized or ignored, and is treatable using standard methods, although patients with MS may be unusually sensitive to side effects of tricyclic antidepressants. CONCLUSIONS: Research is needed to better define the causes of psychiatric syndromes in patients with MS. Those treating MS should increase their awareness of and sensitivity to the likelihood of psychiatric disorder in these patients. 相似文献
16.
Magnetic resonance imaging (MRI) has provided considerable insight into the pathological process and disease activity and progression in multiple sclerosis. MRI has become an important tool for the diagnosis of multiple sclerosis, and increasingly for monitoring treatment trial. The growing use of MRI calls for careful consideration in applications so that the technology is not misused. Here we propose a summary of the literature on MRI in application in clinical neurology. 相似文献
17.
IA Zavalishin NN Iakhno TD Zhuchenko AS Niiazbekova 《Canadian Metallurgical Quarterly》1997,97(12):24-27
32 patients (21-55 years old) with multiple sclerosis (MS) were treated. Remittent form of the disease was observed in 24 patients, secondary progressive one--in 8 individuals; the degree of disability was characterised as scores 0-3 (the first group) and scores 5-6 (the second one) according to scale EDSS. Betaferon was administered subcutaneously in the dose of 8 MIU every other day during the period from several months to 1 year and more. Improvement of the state was observed in 5 patients with remittent form, stop of the development of disease (absence of either aggravations or signs of MS progression) was found in 26 cases (21 with remittent form, 4 with secondary progressive form). The conclusion was made: betaferon cannot cure but can stop progression of the disease. Indications and contraindications for betaferon therapy were established and recommendations were given concerning regimen of the treatment prophylaxis and therapy of side-effects. 相似文献
18.
N De Stefano PM Matthews S Narayanan GS Francis JP Antel DL Arnold 《Canadian Metallurgical Quarterly》1997,49(4):1138-1141
In a 6-year longitudinal study of a patient with relapsing progressive multiple sclerosis (MS), we used proton magnetic resonance spectroscopy to assess N-acetylaspartate (NAA) from a large central brain volume to evaluate the relationship between this marker of neuronal integrity and clinical disability. During the follow-up period, there was one major relapse and its subsequent partial remission. Changes in the brain NAA to creatine ratio correlated strongly with clinical disability (Spearman rank coefficient = -0.73, p < 0.001). We interpret this as evidence that axonal dysfunction or loss contributes to functional impairment of patients with MS. Because the NAA signal in the large volume of interest originated predominantly from white matter that appeared normal on conventional MRI, these results also suggest that some degree of axonal dysfunction may be widespread in acute, severe relapses. 相似文献
19.
A comprehensive semi-structured questionnaire was administered to 100 psychotic patients who had experienced auditory hallucinations. The aim was to extend the phenomenology of the hallucination into areas of both form and content and also to guide future theoretical development. All subjects heard 'voices' talking to or about them. The location of the voice, its characteristics and the nature of address were described. Precipitants and alleviating factors plus the effect of the hallucinations on the sufferer were identified. Other hallucinatory experiences, thought insertion and insight were examined for their inter-relationships. A pattern emerged of increasing complexity of the auditory-verbal hallucination over time by a process of accretion, with the addition of more voices and extended dialogues, and more intimacy between subject and voice. Such evolution seemed to relate to the lessening of distress and improved coping. These findings should inform both neurological and cognitive accounts of the pathogenesis of auditory hallucinations in psychotic disorders. 相似文献
20.
SS Gunby 《Canadian Metallurgical Quarterly》1996,10(3):63-73
Most nursing school curricula address the pathologic nature of illness, the nursing care of clients who are ill, the prevention of illness, and the promotion of health. There seems to be minimal discussion, however, both in nursing curricula and in textbooks, of the alleviation of suffering or of how nurses know that someone is suffering. The article describes a phenomenologic analysis of 12 nursing students' lived experiences of caring for individuals who were suffering. The voices of the students as they chronicled their experiences are exemplars of clinical scholarship as described in the literature. 相似文献