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Chest, Vol 97, 1098-1105, Copyright © 1990 by American College of Chest Physicians

ARTICLES

Platelet and plasma catecholamines in relation to plasma minerals and parathyroid hormone following acute myocardial infarction

H Joborn, P Hjemdahl, PT Larsson, H Lithell, L Lundin, L Wide and S Ljunghall
Department of Internal Medicine, University Hospital, Uppsala, Sweden.

Epinephrine has been shown to lower the plasma concentrations of several minerals and elevate those of parathyroid hormone (PTH). In order to evaluate the possible clinical importance of such experimental observations, 34 patients with acute myocardial infarction (AMI) were studied with daily determinations of plasma catecholamines, minerals, and PTH during the first week after AMI and at follow-up one month later. In addition, platelet catecholamines were determined as they fluctuate more slowly than plasma catecholamines. After infarction initial platelet epinephrine and norepinephrine levels were higher (p less than 0.05 for both) in nonsurvivors than survivors during a one year follow-up. Results suggested that activation of the sympathoadrenal system influences calcium homeostasis following AMI, but that the impact of sympathoadrenal activation on mineral metabolism is of minor clinical significance in the average AMI patient. High platelet catecholamine levels may predict a poor outcome after AMI.




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Copyright © 1990 by the American College of Chest Physicians.