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Biomedical subjects

G Greenfield

Publications and source records attributed to G Greenfield.

6 recordsLinked to original sources
PubMed2000

Hormone profiles in humans experiencing military survival training.

BACKGROUND: Clinical models of the human response to intense, acute stress have been limited to laboratory settings or cross sectional characterizations. As a result, data about the sensitivity of the human neuroendocrine activation to realistic stressors of varying magnitudes are limited. The U.S. Army survival course offers a unique opportunity to examine, in a controlled manner, the human response to acute, realistic, military stress. METHODS: Salivary data were collected in 109 subjects at baseline during four stress exposure time points and at recovery. Serum data was collected at baseline and recovery in 72 subjects and at baseline and during stress exposure in a subgroup of subjects (n = 21). RESULTS: Cortisol significantly increased during the captivity experience and was greatest after subjects' exposure to interrogations. Cortisol remained significantly elevated at recovery. Testosterone was significantly reduced within 12 hours of captivity. Reductions of both total and free T4 and of total and free T3 were observed, as were increases in thyrotropin. CONCLUSIONS: The stress of military survival training produced dramatic alterations in cortisol, percent free cortisol, testosterone, and thyroid indices. Different types of stressors had varying effects on the neuroendocrine indices. The degree of neuroendocrine changes observed may have significant implications for subsequent responses to stress.

Adult↗
PubMed1980

Use of a multiple family group for crisis intervention.

This paper describes the ultilization of a multiple family group as a novel crisis intervention technique for the families of hospitalized burn patients following a tank car explosion. The technique combined a multiple family group with an information group model using a multidisciplinary team of liaison psychiatrist, chaplain, social worker, and psychiatric nurse consultant. A brief dicussion of the theoretical model and literature is included, as well as an assessment of the group process, the perspective of the different disciplines involved, and a follow-up report.

Burns, Chemical↗