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Biomedical subjects

J Thomson

Publications and source records attributed to J Thomson.

At least 127 records · Page 7Linked to original sources

"Detoxification" of Vietnam War trauma: a combined family-individual approach.

Treatment with families of veterans suffering from the aftereffects of combat trauma in the Vietnam War often requires a preliminary phase of disjoint treatment, in which family members are seen separately, before conjoint treatment can proceed. In this disjoint phase of treatment, wives and children are introduced to the brutal realities of Vietnam combat experience and to an understanding of its sequelae. This disjoint phase of family therapy detoxifies combat experience so that it can be approached in subsequent conjoint sessions along with more traditional family therapy issues.

Combat Disorders↗

Comparison of four types of diet using clinical, laboratory and psychological studies.

Thirty-seven people of different dietary habits-vegans, ovolactovegetarians, whole-food omnivores and average omnivores-were studied using nine-day weighed food intakes, clinical and laboratory assessments, standard psychology questionnaires, measurements of urinary cortisol and catecholamine levels and questionnaires on life-style and health factors. The vegan diet most clearly approximated current thinking on diet, as expressed in the NACNE Report, but was deficient in vitamin D, riboflavin, and vitamin B12. Cholesterol levels were significantly higher in both diet and serum in all groups compared with the vegans. There was no significant difference in social background, money spent on food, exercise, smoking, stress levels or psychological parameters between groups.

Cholesterol, Dietary↗

Influences on the food habits of some ethnic minorities in the United Kingdom.

The current research findings of the authors, together with those recently published by other workers in related fields, are reviewed. The groups discussed have been selected, either because detailed studies have been made on them, or because their food habits are sufficiently different from the majority of the population to attract attention, or create problems for them in areas like school meals, hospital catering and other non-domestic feeding situations. Many case studies on minority ethnic groups have been concerned with the social, structural and economic patterns of these communities. Knowing how these patterns have influenced the ethnic identity in some cases, it is thought that we can extrapolate from the strength of the social cohesion of a group to the possible strength of the group's traditional food habits. The emphasis of this review is on the strength of traditional food habits in a different cultural environment, and the factors which contribute to this strength. It is felt that all those involved in providing meals in institutions where ethnic minorities are likely to be present, should have a fundamental understanding of the rationale behind a minority's acceptance or non-acceptance of particular foods. It is also thought that this kind of knowledge should be made available to teachers, social workers, health visitors, dietitians and general medical practitioners, enabling these professionals to understand better the mores which govern the food and nutrition of ethnic minority groups in the UK.

Africa, Eastern↗

Validation of corrections for errors in collimation during measurement of gastric emptying of nuclide-labeled meals.

The study was undertaken to validate phantom-derived corrections for errors in collimation due to septal penetration or scatter, which vary with the size of the gastric region of interest (ROI). Six volunteers received 495 ml of 20% glucose labeled with both In-113m DTPA and Tc-99m DTPA. Gastric emptying of each nuclide was monitored by gamma camera as well as by periodic removal and reinstillation of the meal through a gastric tube. Serial aspirates from the gastric tube confirmed parallel emptying of In-113m and Tc-99m, but analyses of gamma-camera data yielded parallel emptying only when adequate corrections were made for errors in collimation. Analyses of ratios of gastric counts from anterior to posterior, as well as analyses of peak-to-scatter ratios, revealed only small, insignificant anteroposterior movement of the tracers within the stomach during emptying. Accordingly, there was no significant improvement in the camera data when corrections were made for attenuation with intragastric depth.

Evaluation Studies as Topic↗

Error and corrections with scintigraphic measurement of gastric emptying of solid foods.

Previous methods for correction of depth used geometric means of simultaneously obtained anterior and posterior counts. The present study compares this method with a new one that uses computations of depth based on peak-to-scatter (P:S) ratios. Six normal volunteers were fed a meal of beef stew, water, and chicken liver that had been labeled in vivo with both In-113m and Tc-99m. Gastric emptying was followed at short intervals with anterior counts of peak and scattered radiation for each nuclide, as well as posteriorly collected peak counts from the gastric ROI. Depth of the nuclides was estimated by the P:S method as well as the older method. Both gave similar results. Errors from septal penetration or scatter proved to be a significantly larger problem than errors from changes in depth.

Food↗

The treatment of depression in general practice: a comparison of L-tryptophan, amitriptyline, and a combination of L-tryptophan and amitriptyline with placebo.

One hundred and fifteen patients from 5 general practices participated in a 12-week, double-blind study comparing L-tryptophan, amitriptyline, L-tryptophan-amitriptyline combination and placebo in the treatment of depression. Analysis of total score on the Hamilton Depression Scale and a global rating of depression showed that all 3 active treatments were more effective than placebo. Significantly more patients were withdrawn as treatment failures in the placebo group compared with the active treatment groups. Side-effects necessitated withdrawal of more patients from the amitriptyline group than from the other active treatment groups, but this difference was not significant. Plasma amitriptyline and nortriptyline levels were similar in the amitriptyline and combined treatment groups. Standard haematological and biochemical profiles did not alter significantly in any group, but mean heart rate was significantly increased in patients receiving amitriptyline. There was no change in free or total plasma tryptophan concentration with treatment or on remission of symptoms.

Adolescent↗

An evaluation of a traditional Vietnamese diet in the UK.

Research was undertaken to establish what constitutes a Vietnamese diet and assess the diet for nutritional content. The study was also to ascertain whether a traditional diet was available and economically feasible in the UK. The study revealed a diet high in carbohydrates and low in fat. Except for rice and a few condiments, the Vietnamese used foods indigenous to the UK but retained their food culture through traditional cooking methods and food combinations. A Vietnamese diet which meets the estimated nutritional requirements, was less expensive than the average UK diet.

Adolescent↗

Hydrodynamic features of pulmonary air embolism: a model study.

To elucidate the hydrodynamic events during pulmonary air embolism, experiments were conducted in a branching-tube apparatus and in small vessels. It was found that, as long as there existed an elevation differential between the two branches of a bifurcation, the vast majority of air bubbles always entered the higher branch. This finding is explained in terms of buoyancy, shear forces, and liquid flow velocity and is consistent with the in vivo finding of increased blood perfusion in the dependent lung regions during air embolization (J. Appl. Physiol.: Respirat. Environ. Exercise Physiol. 51: 211-217, 1981). The pressures required to drive air bubbles through various small vessels were determined using three aqueous solutions of different surface tensions. Based on these measurements and a theoretical analysis, the diameter of air bubbles that could not pass through the pulmonary vessels was calculated to be 20-30 micrometers, agreeing well with a recent in vivo measurement (J. Appl. Physiol.: Respirat. Environ. Exercise Physiol. 47: 537-543, 1979).

Capillaries↗