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Biomedical subjects

J Tredger

Publications and source records attributed to J Tredger.

10 recordsLinked to original sources

Enteral feeding: a survey to investigate current practices and attitudes of dietitians.

A survey was conducted to investigate current practices and attitudes of dietitians towards enteral feeding, and to elicit the major changes and advancements which have occurred over the past few years. The results of a questionnaire sent to 215 dietitians in England and Wales, and correctly completed by 74 per cent are reported and discussed.

Attitude of Health Personnel

Viscosity differences between various guar gums.

Guar gum from four industrial sources was investigated. The viscosity of two preparations of hydrated guar gum in the form of powdered flour and one granulate flour was measured at 22 degrees and 32 degrees C and pH 1.0 and pH 4.0. Viscosity measurements on wax-coated guar granules proved impossible but visual assessment indicated an extremely low viscosity in all conditions. These findings were compared with the ability of the equivalent of 5 g guar gum of the various preparations to modify the absorption of a 50 g liquid glucose load. The mean post-prandial blood glucose curve was not significantly different from the control situation after the incorporation of each preparation. Despite the granulate flour attaining a considerably lower viscosity than the powdered flour they were equally effective in significantly reducing the mean post-prandial insulin curve (area under the curve (0-180 min) reduced by 46 and 50% respectively). The wax-coated granules which achieved minimal viscosity caused significantly less reduction of post-prandial insulin levels (area under the curve reduced by 37%). The viscosity of guar gum upon hydration is of importance in assessing the efficacy of a preparation in clinical use.

Adult

Blood glucose and insulin levels in normal subjects following a meal with and without added sugar beet pulp.

The fibrous components of sugar beet pulp were investigated to determine whether they would reduce the post-prandial rise in blood glucose and plasma insulin levels when incorporated into a mixed meal. On two separate occasions six healthy volunteers were given either a control meal (providing 86 g carbohydrate) or an identical meal with the addition of 20 g sugar beet pulp (test meal). Blood glucose and plasma insulin levels were measured post-prandially for 3 hours. There was no significant difference between the mean blood glucose of plasma insulin curves at any time after the two meals. Since viscous types of dietary fibers are known to be effective in reducing post-prandial hyperglycaemia and insulinaemia, it would seem that either the physio-chemical nature of the fibre or the procedure employed to extract the sugar renders the particulate fibre inactive.

Adolescent

Guar gum--its acceptability to diabetic patients when incorporated into baked food products.

Guar gum was incorporated into 10 g carbohydrate portions of cheese biscuits and 20 g carbohydrate portions of pizza and egg and bacon flan. Their acceptability to diabetic patients was assessed by means of a taste panel. The results were favourable. Other diabetic patients were asked to judge three cheese biscuits of varying guar gum content. The biscuit with the lowest content was most favoured.

Adolescent

Overview of the use of therapeutic and modified diets.

This paper gives a brief overview of the modifications in macronutrients and energy that may be required to treat a specific clinical condition. It highlights the factors that must be considered when making such changes in order to avoid compromising nutritional states by simultaneously altering the intake of other nutrients.

Diabetes Mellitus, Type 2