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Biomedical subjects

H Stormorken

Publications and source records attributed to H Stormorken.

At least 91 records · Page 5Linked to original sources

Chromogenic substrate assay of plasma prekallikrein. With a note on its site of biosynthesis.

A method for assaying plasma prekallikrein has been developed applying the chromogenic substrate Chromozym PK. Different variables have been investigated, and the final assay system was found to give a reproducible and reliable assay procedure. A normal value of 99.0 +/- 18% was found, the coefficient of variation being 7.9. Studies on material from patients with various liver diseases indicated that the main site of prekallikrein biosynthesis is the liver.

Adult↗

Chronic effect of smoking on platelet count and "platelet adhesiveness" in presumably healthy middle-aged men.

In 386 men aged 40-49 years the number of platelets was related to differences in smoking habits. "Platelet adhesiveness" (retention) was estimated by a glass bead filter method in 376 of these men. The estimation of "adhesiveness" was performed in native blood without anticoagulants at least 12 hr after the last cigarette smoked. A small but statistically highly significant increase in platelet count, in number of "adhesive platelets" and percentage of "adhesive platelets" was found in smokers as compared with non-smokers, the highest values being found in the heaviest smokers and vice versa. Such smoking-related changes in platelet count and reactiveness might unfavourably influence the tendency towards coronary thrombosis, and might in part explain the deleterious effects of smoking on coronary heart disease morbidity and mortality.

Adult↗

Prevention of arterial thromboembolism with acetylsalicylic acid. A controlled clinical study in patients with aortic ball valves.

Prevention of arterial thromboembolism with acetylsalicylic acid (ASA) was studied in 148 patients with single Starr-Edwards aortic ball-valve prostheses. These patients are suitable for such a study because they have a high incidence of arterial emboli derived mainly from thrombi formed on the valves. They were given either 1 Gm. of ASA daily or placebo in combination with anticoagulants, and were observed for 2 years. Only two emboli occurred in patients receiving ASA, none of them severe. In the placebo group 12 thromboembolic episodes were diagnosed in 10 patients, and three with cerebral emboli died; in one a subdural hematoma unrelated to the embolus was found. In addition, one fatal and the one nonfatal intracranial bleeding occurred in each group, whereas gastrointestinal complications were seen more frequently in patients taking ASA. It is concluded that ASA combined with anticoagulants offered a significantly better protection against arterial thromboembolism than did anticoagulant therapy alone.

Adult↗