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Biomedical subjects

K Dahl

Publications and source records attributed to K Dahl.

61 records · Page 4Linked to original sources
PubMed1978

Digital memory recorder in electromyography and nerve conduction studies.

Specifications are given: (i) for a 3-channel digital memory that, when connected to an inkjet writer, allows action potentials from muscle and nerve to be recorded without distortion (upper limiting frequency 10,000 Hz); (ii) for a 14-channel digital memory connected to a 14-channel inkjet writer for the measurement of the territory of the motor units by recording simultaneously from 14 leads of a multi-electrode spaced over the cross-section of the muscle; (iii) for a digital circuit that rejects signals that exceed a given amplitude and duration and interfere with electronic averaging of potentials from sensory nerve less than 1 muV in amplitude.

Electromyography↗
PubMedDate not supplied

Body temperature and diurnal type in women with seasonal affective disorder.

Body temperature rhythms and diurnal type were explored in female controls and women with seasonal affective disorder (SAD) before and after phototherapy. Women with SAD reported being more like evening types than did controls. Morning phototherapy advanced the body temperature rhythms of women with SAD, and shifted their morningness/eveningness scores toward the morning end of the continuum. The implications of these results for our understanding of both SAD and depression in women are discussed.

Body Temperature↗
PubMedDate not supplied

Effects of highly concentrated omega-3 polyunsaturated fatty acids and acetylsalicylic acid, alone and combined, on bleeding time and serum lipid profile.

Twenty-two patients with stable coronary heart disease were randomly assigned to either of two groups. Group I (n = 11) was given acetylsalicylic acid (ASA) 300 mg daily for 1 week, whereafter a daily supplement of 3,4 g eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) as a highly concentrated ethylester, formulation ("K-85", Norsk Hydro) was added for another 4 weeks. Group II (n = 11) was given 3,4 g daily of EPA and DHA for 4 weeks, after which ASA 300 mg daily was added for another week. Determination of serum fatty acids confirmed satisfying absorption of EPA and DHA. A significant increase of the Ivy bleeding time was registered following administration of both "K-85" (240 to 270 sec, median values) and ASA (270 to 360 sec, median values) alone. A slighter increase was noted by a combination of the two principles. A reduction in serum triglycerides of 17% was noted after "K-85" (median values, both groups). Serum total cholesterol decreased after "K-85" administration in group I, but not so in group II. HDL-cholesterol remained unchanged. Serum lipids remained unaffected by ASA. During administration of "K-85" no adverse effects or bleeding episodes were seen.

Adult↗