[ST elevation in the initial phase of myocardial infarct--a sequela of acute coronary occlusion of an expression of neurohumorally-induced metabolic processes?].
The artificial coronary artery occlusion results immediately in ST-segment elevation (ST-E), therefore the ST-E in acute myocardial infarction is considered to be the result of acute coronary occlusion. But in the early phase of myocardial infarction a significant correlation between ST-E and occlusion of the coronary artery does not exist. The early ST-E seems to be predominantly the consequence of sympathico-adrenergic induced metabolic processes in the ischemic myocardium. The beta receptor blockade during the first 90 minutes after the onset of infarction decreased the ST-E by 73 +/- 6% within one hour. Treatment with beta receptor blockers in the acute phase in all patients with first anterior wall infarcts accompanied with ST-E leads to a favorable prognosis. Early ST-E can therefore be considered as a sign of sympathico-adrenergic induced changes in myocardial metabolism. Thus the beta receptor blockade in the acute phase (of anterior wall infarctions) seems to be therapeutically indicated.
D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000328:Adult; D000368:Aged; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*; D011379:Prognosis; D011412:Propanolamines / Q000627:therapeutic use; D011433:Propranolol / Q000627:therapeutic use; D013564:Sympathetic Nervous System / Q000503:physiopathology*
D000319:Adrenergic beta-Antagonists; D011412:Propanolamines; C011550:talinolol; D011433:Propranolol
Die St-Elevation in der Initialphase des Myokardinfarktes--Folge des akuten Koronarverschlusses oder Ausdruck neuro-humoral bedingter metabolischer Prozesse?