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Biomedical subjects

B Dahl

Publications and source records attributed to B Dahl.

5 recordsLinked to original sources
PubMed1992

[Oxygen conserving nasal catheters. Oxymizer pendant].

The Oxymizer pendant consists of a 40 ml pendulating reservoir bag which is connected to the prongs by two tubes. Both reservoir and tubes serve as oxygen reservoirs. We wanted to examine if it was possible to save oxygen by changing from the usual nasal cannula to Oxymizer pendant. 11 patients with hypoxaemia due to chronic obstructive pulmonary disease were examined. We were able to reduce the oxygen requirement by approximately 65% without significant changes in SaO2. All 11 patients evaluated the Oxymizer pendant to be more comfortable than the usual nasal cannula.

Catheterization↗
PubMed1992

Partial pressures of oxygen and carbon dioxide in bone and their correlation with bone-blood flow: effect of decreased arterial supply and venous congestion on intraosseous oxygen and carbon dioxide in an animal model.

Pathological changes in bone have been related to a preceding impediment of the arterial or venous bone circulation and hypoxia. In this study, we analyzed the feasibility of mass spectrometry in measuring intraosseous oxygen and carbon dioxide. The partial pressures were also measured in intraosseous blood samples, and blood flow in bone was measured with the radioactive microspheres technique. The average partial pressure of oxygen in the lateral femoral condyle was 34 +/- 1.6 mm Hg when measured in intraosseous blood samples and 36.3 +/- 2.3 mm Hg when measured with the on-line mass spectrometer, with significant correlation between the methods. The absolute value of the partial pressure of carbon dioxide measured in situ with mass spectrometry was correlated with the value in the withdrawn blood. There was no significant difference in partial pressures of oxygen and carbon dioxide between the two sides or between repetitive measurements. Arterial occlusion resulted in severe hypoxia, whereas more moderate changes followed venous occlusion.

Animals↗
PubMed1977

Treatment of psoriasis vulgaris with a new retinoic acid derivative Ro 10-9359; An uncontrolled clinical trial.

The retinoic acid derivative Ro 10-9359, given orally in maximum daily doses of 100 mg to 15 patients with psoriasis vulgaris, led to clearing of the lesions in 8 patients. The average period of treatment was 9 weeks. In 14 patients side-effects were observed, the most important being palmo-plantar desquamation, shivering, thirst and diffuse hair loss. In 2 patients scaling led to withdrawal. In 6 patients abnormal alkaline phosphatase and glutamic-aspartatic transaminase values, partly transient, developed (glutamicaspartatic transaminase, p less than 0.01).

Alkaline Phosphatase↗
PubMed1975

Lymphocyte transformation, IgE and T-cells in eczema vaccinatum treated with transfer factor. A case report.

Transfer factor (TF) was given to intensify the cell-mediated immune reactions in an atopic patient with generalized vaccinia. The patient showed marked reactivity of peripheral blood lymphocytes to stimulation with phytohaemagglutinin and pokeweed mitogen, but also in nonstimulated cultures. However, later tests with mitogen stimulation of lymphocytes indicated a defective cellular defence mechanism. The addition of autologous plasma to lymphocyte cultures depressed the reactivity of PHA-stimulation considerably. Initially, the patient also showed a normal T-lymphocyte count in peripheral blood, but six months after her vaccinia, extremely high serum IgE levels and a decreased percentage of T-lymphocytes was observed. Although an evaluation of the clinical effect of transfer factor injection is difficult, it should be noted that the patient's temperature immediately fell to normal, and her general health improved following treatment.

Adolescent↗