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Chest, Vol 90, 346-351, Copyright © 1986 by American College of Chest Physicians

ARTICLES

Reperfusion arrhythmias during coronary reperfusion therapy in man. Clinical and angiographic correlations

TA Buckingham, JE Devine, RM Redd and HL Kennedy

We hypothesized that patients suffering acute myocardial infarction who have reperfusion arrhythmias (RPA) during intracoronary streptokinase infusion (ICSK) would have different clinical and angiographic characteristics and a larger infarction size than those who achieved reperfusion without RPA. Of 35 patients who received intracoronary streptokinase, 27 had successful reperfusion documented by angiography. Successful reperfusion was accompanied by RPA in eight patients and no RPA in 19 patients. RPA included episodes of ventricular tachycardia in one, idioventricular rhythm in four, junctional bradycardia in one, or AV block in two patients which occurred at the time of reperfusion. Myocardial infarction size was calculated using creatine kinase-MB (CK- MB) isoenzyme time activity curves using standard methods. The mean CK- MB g equivalents (eq) for those with RPA was 71 +/- 25 (+/- 1 SD) and for those with no RPA was 45 +/- 24 (p less than .04). In patients with RPA, ejection fraction rose 5 +/- 14 percentage points before discharge, but fell 10 +/- 13 points in those with RPA (p less than .03). There was no difference between groups in total dose of streptokinase, final degree of stenosis of the affected vessel, reocclusion rate, or time from onset of symptoms to reperfusion. We conclude that patients suffering acute myocardial infarction who have RPA during ICSK in most cases have a larger infarction site or a more "stunned myocardium," as indicated by greater CK-MB release and fall in ejection fraction which is not due to increased time of ischemia.


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[Abstract] [Full Text] [PDF]


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Copyright © 1986 by the American College of Chest Physicians.