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Biomedical subjects

N Bush

Publications and source records attributed to N Bush.

11 recordsLinked to original sources
PubMed2000

Visual confrontation naming and hippocampal function: A neural network study using quantitative (1)H magnetic resonance spectroscopy.

Prior research on the relationship between visual confrontation naming and hippocampal function has been inconclusive. The present study examined this relationship using quantitative (1)H magnetic resonance spectroscopy ((1)H-MRS) to operationalize the function of the left and right hippocampi. The 60-item Boston Naming Test (BNT) was used to measure naming. Our sample included 46 patients with medically intractable, focal mesial temporal lobe epilepsy who had been screened for all pathology other than mesial temporal sclerosis. Statistics included Pearson correlations and neural network analysis (multilayer perceptron and radial basis function). Baseline BNT performance correlated significantly with left (1)H-MRS hippocampal ratios. Thirty-six per cent of the variance in baseline BNT performance was explained by a neural network model using left and right (1)H-MRS ratios(creatine/N-acetylaspartate) as input. This was elevated to 49% when input from the right hippocampus was lesioned mathematically. In a second model, left (1)H-MRS hippocampal ratios were modelled using measures of semantic and episodic memory as input (including the BNT). Explained variance in left (1)H-MRS hippocampal ratios fell from 60.8 to 3.6% when input from BNT and another semantic memory measure was degraded mathematically. These results provide evidence that the speech-dominant hippocampus is a significant component of the overall neuroanatomical network of visual confrontation naming. Clinical and theoretical implications are explored.

Adult↗
PubMed1998

CARE-PARTNER: a computerized knowledge-support system for stem-cell post-transplant long-term follow-up on the World-Wide-Web.

Evidence-based practice in medicine promotes the performance of medicine based upon proven and validated practice. The CARE-PARTNER system presented here is a computerized knowledge-support system for stem-cell post-transplant long-term follow-up (LTFU) care on the WWW, which means that it monitors the quality of the knowledge both of its own knowledge-base and of its users. Its aim is to support the evidence-based practice of the LTFU clinicians and of the home-town physicians who actually care for the transplanted patients. Currently, three fundamental characteristics of CARE-PARTNER are accountable for its knowledge-support function: the quality of its knowledge-base, its availability on the WWW, and its learning from experience capability. As a matter of fact, the integration of a case-based reasoner in the reasoning framework enables the system to introspectively study its results, and to learn from its successes and failures, thus confronting the quality of the guidelines and pathways it reuses to the reality and complexity of the clinical cases.

Artificial Intelligence↗
PubMed1991

Development of a behavioral measure of mouth pain, nausea, and wellness for patients receiving radiation and chemotherapy.

Toxicities from the chemotherapy and irradiation preparative regimen for bone marrow transplantation include nausea, emesis, and oral pain. Behavioral measures were developed as alternatives to paper and pencil measures of these symptoms because patients are sometimes too ill, unavailable, or unwilling to complete self-report scales. Behavioral observations also provide supplements to self-report for these multidimensional symptoms. For 24 days during the acute phase of transplantation, nurses rated the behavior of adult patients on: (a) oral pain (for example, requests pain medication or refuses mouth examination), (b) nausea (for instance, retches or keeps emesis basin near), (c) wellness (for example, talks voluntarily or smiles), (d) verbal complaints of pain, and (e) verbal complaints of nausea. The behavioral measures demonstrated good interday reliability (range, 0.70-0.86) and construct validity as demonstrated by a multitrait, multimethod correlation matrix.

Adult↗
PubMedDate not supplied

Quality of life of adult long-term survivors of bone marrow transplantation: a qualitative analysis of narrative data.

Recently, clinicians and researchers alike have challenged the long-standing impression that survivors of bone marrow transplantation (BMT) experience a less than optimal quality of life (QOL). Despite the accumulating evidence suggesting that most adult survivors adjust relatively well within two to five years after BMT, little is known about the growing population of recipients living well beyond five years. This paper reports the design and qualitative components of a large study that used a cross-sectional, descriptive, mailed survey design. The aim of the study was to document systematically how 125 adult survivors of BMT (6-18.4 years post-transplant) perceived the quality of their lives. An eight-item, open-ended questionnaire was used to gather information on the reestablishment of life after BMT, demands of recovery, coping strategies, limitations imposed by BMT, current health problems, QOL, and concerns for the future. Content analysis of the verbatim responses indicated that most long-term survivors, despite the persistence of lingering side effects, perceive themselves as cured and well, leading full and meaningful lives. Nursing therapeutics can focus on providing accurate and timely information about the known long-range complications of BMT. Further research is needed to examine the entire issue of social support following BMT and to identify the special care requirements of the recipients (5%) who reported poor physical and mental health.

Activities of Daily Living↗
PubMedDate not supplied

Quality of life and the cancer experience: the state-of-the-knowledge.

PURPOSE/OBJECTIVES: To address the state-of-the-knowledge concerning quality of life (QOL) issues and the cancer experience from theoretical, research, clinical, and educational perspectives. DATA SOURCES: Published books and articles and a panel of experienced QOL experts who convened at the Oncology Nursing Society's State-of-the-knowledge Conference on Quality of Life in February 1995. DATA SYNTHESIS: Despite the evolution and support of QOL in oncology nursing practice, education, and research, there remains gaps in theory, research, and practice related to QOL. This article explores these gaps in knowledge and recommends future directions for QOL theory, research, education, and practice. CONCLUSIONS: Further conceptual work and resolution of QOL methodologic issues to guide clinical practice and education are warranted. The impact of cultural variables and precancer life experiences on patients' perceptions of QOL also must be addressed. NURSING IMPLICATIONS: Oncology nurse clinicians, educators, and researchers must continue to work collaboratively to enhance the knowledge base regarding QOL and to improve the nursing care provided to individuals with cancer.

Adolescent↗