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Biomedical subjects

H G Rohner

Publications and source records attributed to H G Rohner.

63 records · Page 4Linked to original sources
PubMed1977

Serum 25 -- hydroxyvitamin D3 levels in patients with liver disease.

Serum 25-hydroxyvitamin D3 levels were determined in chronic hepatic diseases by a radioreceptor assay and correlated with serum albumin, calcium and anorganic phosphate, 25-hydroxyvitamin D3 serum levels were significantly lower inall chronic hepatic diseses compared to normals. The low levels are correlated with the degree of parenchymal damage, not with the etiology of hepatic disease. In alcoholic liver disease thus 25=hydroxyvitamin D3 levels are significantly lower when cirrhosis is present than in mere fatty liver. Anorganic phosphate and calcium were close to the lower range of normal and significantly lower than in the control group studied.

Chronic Disease↗
PubMed1976

[A contribution to the pseudo-LE-syndrome. Investigations of the cardiovascular system, abdominal organs, lymphatic system and drug histories (author's transl)].

13 of 30 patients suffering from pseudo-LE-syndrome showed a usually reversible enlargement of the heart during the acute stage of the disease. In two patients carditis occurring in pseudo-LE-syndrome lead to congestive heart failure and an additional patient died in the acute stage of carditis. As opposed to Systemic Lupus Erythematosus hypertension did not occur in a higher frequency than normal. In five cases cardiac catheter examinations showed slight elevation of the end-diastolic pressure in the right ventricle, in two cases an abnormal high mean pressure in the right atrium and a systolic gradient at the pulmonic valve was found. -Scintigrams showed definite enlargement of the spleen and to a lesser degree enlargement of the liver was seen. Laparascopy showed multiple concretions after peritonitis. Lymphographic changes in the retroperitoneal lymph nodes and lymphatic ducts were not observed in contrast to rheumatic diseases. Drug histories in most cases discovered intake of Venopyronum dragees prior to onset of the disease. But recurrent attacks of the disease also occurred without further intake of the drug.

Adult↗
PubMed1976

[The radiological appearances of caustic burns in the upper intestinal tract (author's transl)].

Seventy-three caustic burns of the upper gastrointestinal tract were divided into early and late effects; the radiological findings were analysed and, as far as possible, compared with the endoscopic results. The central role of radiology proved to be indisputable, particularly for the demonstration of a perforation, for the control of treatment by drugs or dilatation and before surgery. Endoscopy is of particular value in the diagnosis of caustic burns if the radiological findings are negative, for following treatment and for clarifying atypical late changes in order to exclude malignant degeneration.

Adolescent↗
PubMed1976

[Thyroid hormones and thyrotropin in liver and kidney insufficiency].

In 22 patients with hepatic or renal insufficiency the serum concentrations of trijodothyronin, thyroxine and thyrotropin and also the T4-binding capacity of TBG were determined. The mean serum T3 concentration was found to be significantly lower in patients with hepatic coma when compared with euthyroid subjects. In the cases of renal insufficiency the serum T3 concentrations were in the normal range. Due to hormone loss through dialysis however, the mean value of the T3 concentrations was slightly lower than the average concentration of normal subjects. The obtained results agree with those of our earlier studies which showed that there are significant differences between liver artery and vein T3 concentrations in serum, whereas no such differences could be ascertained between serum concentrations in renal artery and vein. On the basis of these findings it is assumed that conversion of T4 into T3 occurs predominantly in the liver.

Hepatic Encephalopathy↗
PubMedDate not supplied

Pharmacokinetics and bioavailability of cimetidine in gastric and duodenal ulcer patients.

The pharmacokinetics and bioavailability of cimetidine after 200 mg given intravenously and orally was studied in 6 gastric and 6 duodenal ulcer patients aged between 28 and 64 years. There were no differences in any of the pharmacokinetic parameters between the two ulcer groups, but there was considerable variation which was mainly age-related. Bioavailability was not complete, but was about 60% based on the plasma concentration data. The volume of distribution at steady-state was about 80% of body weight, and the plasma clearance value of 495 ml/min was mainly due to renal clearance (293 ml/min). The elimination half-life was approximately 2 hours. These pharmacokinetic parameters together with the percentage of dose excreted unchanged in urine following intravenous administration were all highly age correlated; all decreasing with age except the elimination half-life which increased with age. Of clinical importance is the finding that the time for which the plasma concentration exceeded 0.5 microgram/ml following oral administration was also highly age-dependent, increasing by more than 2-fold in the elderly (53 to 64y) compared with the younger (28 to 45y) patients.

Adult↗