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Biomedical subjects

J Raymer

Publications and source records attributed to J Raymer.

9 recordsLinked to original sources
PubMed2001

Immigration and the regional demographics of the elderly population in the United States.

OBJECTIVES: This research examined the impacts of past international and interregional migration flows on regional elderly population growth and distribution patterns. METHODS: The authors used 1960, 1970, 1980, and 1990 Census data and multiregional demographic models to analyze changes in the sources of regional elderly population growth rates, age compositions, and spatial distributions over time. RESULTS: Past elderly interregional migration patterns have exhibited considerable stability and have contributed less than aging-in-place in shaping regional elderly population geographies. Also the effects of immigration on elderly dependency ratios have been very modest. DISCUSSION: Little evidence exists of any significant breaks with past trends in internal elderly migration patterns. Reconstruction of elderly population changes between 1950 and 1990 reveals that the driving force behind the changes was net aging-in-place and not net migration. Finally, analysis of the possible population rejuvenating effects of immigration suggests that although its impact has contributed to lower elderly-to-worker dependency ratios, its level over the past decades has been insufficient to counteract the much stronger countervailing impact of population aging.

Aged↗
PubMed1998

The spatial focus of U.S. interstate migration flows.

"Despite the widespread interest in the changing geographies of national migration regimes, it is somewhat remarkable that no widely accepted measure of the spatial concentration or focus exhibited by such geographies has emerged. We examine four of the most popular indices of inequality in this paper and contrast their performance as measures of spatial focus. Adopting the coefficient of variation as our preferred alternative, we go on to examine the spatial focus of aggregate interstate migration steams in the U.S. over time. Then we consider disaggregations of the migration streams by age, race and nativity, and examine the role of states as national redistributors of these same subpopulations."

Age Factors↗
PubMed1996

Nurse management of posttransplant hypertension in liver transplant patients.

Hypertension develops soon after organ transplantation using cyclosporine- or FK506-based immunosuppression. Sustained rises in blood pressure require intervention to reduce the risk of intracranial bleeding and other cardiovascular complications. Antihypertensive treatment is complicated by reduced renal function and potential interference with absorption and/or metabolism of cyclosporine or FK506. To manage early and long-term hypertension related to immunosuppression with cyclosporine or FK506 and prednisone following orthotopic liver transplantation, a comprehensive nurse-managed hypertension clinic was developed. Blood pressure, heart rate, and antihypertensive and immunosuppressive regimens were evaluated according to a standard protocol at 1, 4, 12, 24, and 36 months after orthotopic liver transplantation. Data indicate that posttransplantation hypertension develops within the first months after orthotopic liver transplantation and persists indefinitely. If comprehensively managed by the hypertension nurse-clinician, the percentage of controlled hypertension patients can increase over time.

Blood Pressure Monitoring, Ambulatory↗
PubMed1984

Volatile constituents of wolf (Canis lupus) urine as related to gender and season.

The volatile constituents of wolf urine were examined via capillary gas chromatography and compared among male, female, and castrate male. Several compounds including methyl isopentyl sulfide, 3,5-dimethyl-2-octanone, and acetophenone were clearly associated with the gender of the animal and many displayed a seasonal dependence. In addition, 2 long-chain aldehydes isolated from urine samples by an HPLC procedure also correlated with the endrocrine status of the animal.

Animals↗