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Biomedical subjects

T K Larmi

Publications and source records attributed to T K Larmi.

138 records · Page 8Linked to original sources
PubMedDate not supplied

Efficacy of guar gum in preventing the dumping syndrome.

The occurrence of dumping symptoms during 1 wk of use of 5 g of guar gum or placebo in meals was examined in a double-blind study in 11 patients, who had undergone gastric resection and were suffering from the dumping syndrome. The results show that guar gum prevented the dumping syndrome and increased tolerance to foods not previously tolerated in nine of the 11 patients.

Adult↗
PubMedDate not supplied

Effect of guar gum on gastric emptying after gastric resection.

Gastric emptying after a conventional semisolid meal containing 5 g of guar gum granules or placebo was measured in a double-blind, controlled trial, using a radioisotopic (technetium Tc-99m DTPA) technique, in 11 patients who had undergone gastric resection, and who were experiencing the dumping syndrome. Guar gum clearly slowed gastric emptying in five of the 11 patients, and the results suggest that the addition of guar gum to normal meals, especially those rich in monosaccharides or disaccharides, may be helpful to post-gastrectomy patients suffering from the dumping syndrome.

Adult↗
PubMedDate not supplied

Effect of guar gum added to the diet of patients with duodenal ulcer.

In a randomized, double-blind, controlled clinical study, the effects of 5 g of guar gum, a dietary fiber composed of galactose and mannose, or placebo added to the diet of 20 patients with duodenal ulcer for 1 wk each were examined. Ten patients derived evident benefit and five some help from guar gum, on comparing symptoms during administration of guar gum with those experienced earlier or during the placebo week, whereas four patients found that neither guar gum nor placebo had any effect (p less than 0.001). The beneficial effect was associated with increased feelings of repletion after meals. Patients with fewest symptoms benefited only slightly, or not at all, from guar gum. In one patient, guar gum abolished pain felt earlier and on placebo, but also caused severe gastric retention after meals. This patient had pyloric stenosis. In patients who were intolerant to berries, fruits, sugar, sweet rolls, and pizza these foodstuffs were better tolerated during guar gum administration. The diarrhea which occurs in some patients ingesting guar gum was avoided by giving low initial doses. In three patients unpalatability of guar gum was a minor complaint. It is concluded that guar gum is helpful to many patients with uncomplicated duodenal ulcer, but that it is harmful to those having increased gastric emptying, eg, pyloric stenosis patients, and that guar gum may exert its effects by increasing gastric emptying time.

Adult↗
PubMedDate not supplied

The effects of gastric surgery on serum ferritin concentrations.

Changes in serum ferritin concentrations were monitored for three months after gastric operation, in 25 patients. In 23 patients, the serum ferritin concentration was seen to be increased, one week postoperatively, as compared with the preoperative level. Thereafter, in most patients, the serum ferritin concentration gradually decreased to the initial preoperative level. Preoperatively, 13 of the total 25 patients had low serum ferritin concentrations, indicating depleted iron stores. In eleven of these patients, the serum ferritin concentrations followed the above-mentioned course and normal values of serum ferritin concentration were seen postoperatively, indicating normal body iron stores. In six of the ten patients with normal preoperative serum ferritin concentrations, there was a temporary increase within the limits of the normal range. The temporary postoperative increase of serum ferritin concentration was more marked in the patients who underwent total or partial gastrectomy than highly selective vagotomy or fundoplication. We conclude that measurement of serum ferritin concentration may give a false impression of normal body iron stores in the postoperative state.

Adult↗
PubMedDate not supplied

The effect of furosemide on renal function in open heart surgery.

The effect of furosemide on renal function in patients undergoing open heart surgery was investigated, using creatinine clearance, urine flow, sodium and potassium excretion as the parameters. The effect of furosemide (2 mg/kg i.v.) on blood flow in arteria renalis and the tissue oxygen tension of the renal cortex and medulla were also investigated experimentally in six dogs. The flow was measured with an electromagnetic flowmeter and the tissue oxygen tension with IBC tissue oxygen electrodes. Prolongation of the perfusion time to more than 60 minutes resulted in a decline of creatinine clearance to appr. 50% of the initial level. Prophylactic furosemide given prior to the perfusion brought down the creatinine clearance to 64% of the initial level. Furosemide, administered either prophylactically just before the cardiopulmonary bypass or after urine flow had declined below 0.5 ml/kg/h, had no effect on the potassium balance in the long perfusion group (over 60 minutes), though it clearly increased the negative potassium balance in the short perfusion group (below 60 minutes). In an experimental work on dogs, furosemide was found to elevate the tissue oxygen tension in the renal cortex and and medulla, and slightly to increase the blood flow in arteria renalis.

Acute Kidney Injury↗