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Biomedical subjects

H D Calvey

Publications and source records attributed to H D Calvey.

5 recordsLinked to original sources
PubMed1987

Gastrointestinal investigations for anaemia in the elderly: a prospective study.

Of 60 patients referred for geriatric assessment with clinically significant hypochromic anaemia, in the absence of frank bleeding, 44 underwent upper gastrointestinal and 27 lower gastrointestinal investigations. The probability of identifying a potential cause at upper gastrointestinal endoscopy was three times that at barium enema, and five times that at sigmoidoscopy, and the lesions identified at endoscopy were more likely to need treatment. Of 41 who completed investigation, a cause was found in 36, upper gastrointestinal in 29, colonic in six and ileal in one. Six upper gastrointestinal and three colonic lesions were found in the 11 of these without gastrointestinal symptoms. Upper gastrointestinal endoscopy in elderly patients with unexplained hypochromic anaemia will identify a treatable cause in a high proportion of cases.

Aged↗
PubMed1986

A new prognostic index in surgery and parenteral feeding: the ratio of triiodothyronine to reverse triiodothyronine in serum (T3/rT3 ratio).

Serum concentrations of albumin, triiodothyronine (T3), and reverse triiodothyronine (rT3) were measured in 46 patients on the first day after routine gastrointestinal surgery, and the molar ratio T3/rT3 was calculated. The median value of this ratio, but not of albumin, was significantly lower in 11 who subsequently suffered major septic complications than in the remainder. Measurement of the ratio correctly predicted the outcome of 80% of individuals. The T3/rT3 ratio, midarm muscle circumference (MAMC), triceps skin fold (TSF) and serum concentrations of albumin and transferrin were measured in 23 patients at referral for parenteral feeding. Median values of T3/rT3 ratio, MAMC and transferrin, but not of the other parameters, were significantly lower in nine who died than in survivors. Measurements of the ratio, MAMC and transferrin correctly predicted the outcome of 87%, 78% and 74% of individuals, respectively.

Journal Article↗
PubMed1983

Estimation of urinary nitrogen losses from urea excretion in patients with intestinal diseases requiring parenteral nutrition, and in those with hepatic decompensation.

A comparison of daily urinary nitrogen excretion measured directly, with values derived from urea excretion, was carried out on 110 occasions in patients with either gastrointestinal disease requiring total parenteral nutrition or with alcoholic liver disease. The values were found to correlate well in both patient groups (r = 0.88 and 0.9 respectively). Values of urinary nitrogen loss calculated from urea excretion may safely be used when performing nitrogen balance studies in such cases.

Dietary Proteins↗