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Biomedical subjects

V Petersen

Publications and source records attributed to V Petersen.

31 records · Page 2Linked to original sources
PubMed1982

[Traumatic tricuspid insufficiency a clinical study (author's transl)].

Four cases of surgically confirmed traumatic tricuspid insufficiency are presented. There is a characteristic long interval between blunt trauma and onset of cardiac symptoms. Common clinical, radiographic and echocardiographic features of tricuspid insufficiency are described. Cardiac catheterisation and right ventricular angiography confirm the diagnosis and the surgical aspect verifies the traumatic etiology. The indication for surgical treatment by valve replacement is discussed. The results of surgery have been good.

Adolescent↗
PubMed1981

DNA in synovial fluid and the circulation of patients with arthritis.

DNA levels were measured in synovial fluids and sera of 106 patients with rheumatoid arthritis (RA), osteoarthritis (OA), gout, pseudogout, and posttraumatic arthritis (TRA). In synovial fluids, the highest concentration was found in rheumatoid arthritis (mean +/- SE 18 +/- 3 microgram/ml for seropositive and 9 +/- 1 microgram/ml for seronegative variants), gout and pseudogout (17 +/- 3 microgram/ml). In contrast, the levels in patients with OA or acute TRA were very low: 0.8 +/- 0.1 microgram/ml an 1.1 +/- 0.2 microgram/ml, respectively. The differences between the means of the first disease group and OA or TRA is statistically significant. A similar pattern was observed for DNA levels in the circulation: in rheumatoid arthritis, the mean concentration was 135 +/- 28 ng/ml and 164 +/- 39 ng/ml for seropositive and seronegative RA, respectively. Again the levels in OA and TRA were much lower, 52 +/- 18 ng/ml and 0 ng/Ml, respectively. The latter are not significantly different from the mean levels of 95 normal, healthy controls (14 +/- 3 ng/ml), whereas the concentration of DNA in the serum of RA patients is significantly higher than in OA, TRA, or normal controls. Serial determinations of DNA and other criteria of disease activity (leukocytes and protein levels in synovial fluid, blood sedimentation rate) in individual patients revealed a strong correlation of elevated values with active episodes. THe results suggest that these parameters reflect tissue damage.

Arthritis↗
PubMed1978

[The vessels of the retropancreatic space in grey-scale-ultrasound. A contribution to the topography of the pancreas (author's transl)].

Normal pancreatic parenchyma and retropancreatic vessels can be well visualized and differentiated by grey-scale-tomography. The posterior border of the head and body of the pancreas can be defined better with the grey-scale-technique than with other ultra-sound-techniques by visualization of the retropancreatic vessels. For this purpose the venous system (portal vein, splenic vein and superior mesenteric vein) is more important than the arteries because of their closer topographic relationship to head and body of the pancreas. Identification and separation of those veins from other vascular structures is easily possible because of their constantly reliable topography and typical configuration on transverse section. The spleno-porto-vascular bundle--resembling a tadpole--should be demonstrated well enough to avoid the occasional confusion with the pancreas itself.

Humans↗
PubMed1977

[Ultrasound for differentiated carcinoma of the thyroid, autonomous adenoma and thyroiditis (author's transl)].

The article deals with a number of thyroid abnormalities which produce similar sonographic patterns, characterised by a paucity of echos of low amplitude. It concerns three more or less circumscribed changes (differentiated carcinoma of the thyroid, autonomous adenoma and focal thyroiditis) and two diffuse thyroid conditions (sub-acute and lymphocytic diffuse thyroiditis, hyperthyroidism). Carcinoma of the thyroid is of particular interest. The distinguishing features and differential diagnosis are discussed.

Diagnosis, Differential↗
PubMed1975

A study of thyroid stimulating activity in human serum with the highly sensitive cytochemical bioassay.

The cytochemical bioassay is able to detect minute amounts of thyroteopin and thyroid stimulating immunoglobulins. Estimations of serum TSH by the cytochemical bioassay are in good agreement with values obtain by radioimmunoassay. In untreated hyperthyroid patients with Graves' disease the TSH levels are significantly lower than in control subjects. Thyroid stimulating immunoglobulins showed a delayed time corse of action in the bioassy and this provided a voncenient method of distinguishing between the two thyroid stimulators.

Animals↗
PubMed1974

Effect of prolonged thiazide treatment on renal lithium clearance.

Renal lithium clearances were determined after the administration of a small test dose of lithium carbonate in 22 patients when they were on long-term treatment with thiazides and when they were not on such treatment. Thiazide administration led to a 24% reduction in the lithium clearance. Diuretic drugs should be used with caution in patients given lithium treatment, and lithium should be used with caution in patients receiving diuretic treatment.

Bendroflumethiazide↗
PubMedDate not supplied

[Massive ascites formation due to unabsorbed cerebrospinal fluid following abdominal surgery in ventriculoperitoneal shunt. A case report].

A 15-year-old girl with a congenital heart disease (pulmonary stenosis and aortic insufficiency), who had a ventriculoperitoneal shunt operation because of hydrocephalus internus at the age of two years, 12 years later underwent colectomy because of juvenile colonic polyposis. After this operation, enormous production of ascites began which, because of progressive development, finally required ventriculoatrial shunt operation. A total volume of 17 liters of fluid was removed in two ascites drainages before and during the latter operation. Postoperatively the ascites production stopped completely.

Adenomatous Polyposis Coli↗