Accidental poisoning in Minnesota. Mortality data.
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Accidents↗
Biomedical subjects
D K Olson
Publications and source records attributed to D K Olson.
An epidemiological view of poisoning.
An epidemiological approach to understanding the incidence and control of injuries is essential. Epidemiology facilitates discovery of factors contributing to the occurrence of, in this case, injuries from poisoning. This page reviews those theories relative to agent, host and environment involved in an unintentional poisoning incident. It is through an understanding of each of these factors that the poisoning incident becomes more clearly defined.
Adolescent↗
Effect of suckling on pituitary responsiveness to gonadotropin-releasing hormone throughout the early postpartum period of beef cows.
The objective of this study was to compare pituitary responsiveness to gonadotropin-releasing hormone (GnRH) throughout the early postpartum period (PP) in beef cows suckling in single calf vs cows which had calves removed at birth. The experiment utilized 48 cows in a 2 X 4 factorial. Main effects studied were suckling status (suckled or nonsuckled) and days PP (d 3, 10, 20 or 30). Covariates studied were pre-treatment concentrations of progesterone (P), estradiol-17 beta (E), luteinizing hormone (LH) and follicle stimulating hormone (FSH). Suckled (S) cows nursed one calf, while nonsuckled (NS) cows had calves removed at birth. Treatment was a single im injection of 100 micrograms GnRH dissolved in saline. Pre-GnRH plasma concentrations of E, P, LH and FSH and post-treatment plasma concentrations of LH and FSH were determined at 15 min intervals (-30 to 360 min) in blood samples collected via jugular cannulae. Post-treatment plasma concentrations of P were determined at 6 (n = 23) or 8 (n = 23) days after treatment to monitor ovarian response. Concentrations of E, LH and FSH before GnRH injection did not differ (P greater than .1) between S and NS cows at any PP stage and data were pooled for statistical analyses. Pre-treatment LH, but not FSH, increased (r = .43; P less than .002 (with days PP and concentrations of LH were greater (P less than .05) at 30 d than at 3 d PP. Pre-treatment P was greater (P less than .05) in NS than in S cows on d 30 PP and P was correlated (r = .51; P less than .01) with days PP in NS cows. However, the frequency of cows exhibiting plasma P greater than or equal to 1 ng/ml prior to GnRH was low on all days studied and was similar for both groups. LH release after GnRH was correlated with increasing days PP in both S (r = .73; P less than .001) and NS (r = .61; P less than .002) cows, Releasable FSH was not related to days PP in either group. Mean peak LH and total LH released were greater (P less than .025 and P less than .05), respectively) in S than in NS cows at 30 d PP. Mean peak FSH and total FSH released were greater (P less than .05 and P less than .07, respectively) at 10 and 30 d PP in S cows than in NS cows. Pre-treatment E, but no P, LH or FSH was positively related (P less than .01) to GnRH-mediated LH release in both groups. When pre-treatment E was partitioned into separated regressions for S (ES) and NS (ENS) cows, increased pituitary LH response in S cows on d 30 appeared to be due in part to a greater sensitivity of S cows to E modulation. We found no evidence to suggest that pituitary responsiveness per se is decreased in beef cows suckling a single calf.
Animals↗
Technology-enhanced learning/distance education: market survey of occupational health and safety professionals.
A market survey of occupational health and safety professionals was performed to assess their interest in course work offered through distance education, using technology-enhanced learning methods such as the Internet or CD-ROM. A random sample of 800 active and student members of the American Industrial Hygiene Association, the American Association of Occupational Health Nurses, and the American Society of Safety Engineers from the eight-state Midwest region were queried through a mail survey. Respondents expressed a high likeliness (87.4%) to participate in distance education opportunities for the purposes of continuing education and academic degree. The areas of study interest selected most often were occupational health (73%), injury prevention and control (60%), and industrial hygiene (53%). More than three-quarters of respondents (79%) said that an on-campus component was not important to their learning experience. The majority of respondents (68%) indicated that they were reimbursed for the cost of education with significant differences identified by association. Occupational health and safety professionals are interested in distance education using technology-enhanced learning (TEL) methodologies for meeting their educational needs. TEL/distance education, built on a tested educational approach, should be implemented and outcomes shared to increase the body of knowledge regarding these teaching strategies as they pertain to occupational health and safety professionals.
Curriculum↗
How one rural hospital uses technology to manage care.
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Computer Communication Networks↗
Occupational health nursing in Canada: its social foundation and future.
Our purpose in examining the social foundation of occupational health nursing is to better determine the future direction of the profession and its impact on a diverse workforce. Part of what makes up the profession of occupational health nursing is found in its definition: a process that is determined by the interaction between the occupational health nurse, worker, work and workplace; its goal is to assist the worker to achieve his or her optimal level of functioning, primarily through health education, health promotion, prevention of disease and injury and crisis intervention. Much of occupational health nursing is also based on its history and the traditions that have been established. A true understanding, then, of what occupational health nursing's future can be comes from a solid understanding of the history of the profession. As social trends in the past affected the profession, so will they in the future.
Canada↗