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Biomedical subjects

E W Miller

Publications and source records attributed to E W Miller.

10 recordsLinked to original sources

Explicating middle-range theory through methodological diversity.

Debates about methodological diversity and the most appropriate paradigm for scientific inquiry are still flourishing within the community of nurse scholars. Rather than continuing to debate these controversies, the authors of this article suggest that nurse researchers set aside methodological differences and move to discover the truths that will build the foundational base of nursing practice and, thus advance the discipline. This article discusses the multiple methodological perspectives used to explicate middle-range concepts from the theory and paradigm for nursing, Modeling and Role-Modeling. Each author will demonstrate how combining different approaches and methodologies can be helpful in exploring and validating middle-range concepts.

Adaptation, Psychological

Cellular immunolocalization of S100 protein within fixed tissue sections by monoclonal antibodies.

Monoclonal antibodies (MoAb) that cross-react with the shared epitopes of S100 protein have been prepared from mouse hybridoma cell lines and partially characterized. Nine of these MoAb were applied to sections of formaldehyde-fixed paraffin-embedded human tissues that were stained by immunohistochemical techniques. Three of these MoAb give uniformly and reproducibly positive staining in appropriate cell types when stained by avidin-biotin methods. Three of the MoAb were judged to be negative, although some MoAb gave inappropriate staining patterns. The three remaining MoAb showed either great heterogeneity in their staining patterns or intensities, or gave a lesser degree of reproducibility in a given tissue or neoplasm. One of the MoAb designated 15E2E2 that belonged to the first group of reproducibly staining antibodies was used to stain a larger number of normal human tissues and neoplasms. The staining that was observed appeared to recapitulate that which was previously described for conventional S100 protein antibodies. Monoclonal antibodies may, therefore, have a role in selected cases where standard microscopy is equivocal for a specific tissue diagnosis, or where independent verification of the diagnosis would be beneficial.

Adult

Social stress and atherosclerosis in normocholesterolemic monkeys.

Socially stressed adult male cynomolgus monkeys (Macaca fascicularis) fed a low fat, low cholesterol diet developed more extensive coronary artery atherosclerosis than unstressed controls. Groups did not differ in serum lipids, blood pressure, serum glucose, or ponderosity. These results suggest that psychosocial factors may influence atherogenesis in the absence of elevated serum lipids. Psychosocial factors thus may help explain the presence of coronary artery disease (occasionally severe) in people with low or normal serum lipids and normal values for the other "traditional" risk factors.

Animals

Angioplastic repair of a ruptured pulmonary artery aneurysm.

A 28-year-old woman had a ruptured solitary pulmonary arterial aneurysm which was successfully treated by pericardial patch graft. The etiology of the aneurysm could not be determined although the patient had had several episodes of blunt chest trauma in the past. Unusual aspects of this case include: location of the aneurysm in the intermediate portion of the left pulmonary artery within the major intralobar fissure, intrapleural rupture, preoperative diagnosis by pulmonary angiography, and an incidentally discovered histopathological abnormality of the aneurysm itself for which no satisfactory explanation has been found.

Adult

Radiographic evaluation of pancreatico-jejunal shunts.

This paper describes opacification and identification of two surgically constructed pancreatico-jujunal shunts. A fibreoptic panendoscope was used with retrograde injection via the ampulla of Vater (ERCP). This procedure makes possible more accurate anatomical evaluation and so more precise clinical appraisal of both pre- and post-surgical states.

Adult

Affiliated-individuation in caregivers of adults with dementia.

The purpose of this study was to test the effect of a theory-based support group intervention on affiliated-individuation in caregivers of adults with dementia. Modeling and Role-Modeling, a theory and paradigm for nursing, provided the framework for intervention. The sample of 26 caregivers attended biweekly support groups for 12 months. Quantitative data, collected at baseline and at 6 and 12 months, were analyzed using MANOVA to assess within-subject variance. Results of data analysis indicated that levels of affiliated individuation did not decrease in the subjects in spite of their continued caregiving of persons who had Alzheimer's disease. Qualitative data collected 1-2 months after 12 months of interventions supported the quantitative findings. They also described a process that parallels the theoretical definition of affiliated-individuation.

Adult