JOURNAL ARTICLE

Early recurrence of ST-segment elevation in patients with initial reperfusion during thrombolytic therapy: impact on in-hospital reinfarction and long-term vessel patency

R Dissmann, R Schröder, T Brüggemann, H Völler, H Schäfer, T Linderer
Coronary Artery Disease 1994, 5 (9): 745-53
7858764

AIM: To investigate the frequency and prognostic impact of early recurrent ST-segment elevation after initial ST-segment resolution in patients with acute myocardial infarction who had been treated with intravenous thrombolysis.

METHODS: Eighty-one patients with acute myocardial infarction underwent 24 h Holter monitoring of the infarct-related ST-segment elevation, at the initiation of thrombolytic therapy. Angiography was performed in 88% of the patients 9 +/- 4 days after infarction.

RESULTS: Resolution of the ST-segment elevation during the first 4 h, suggestive of early reperfusion, occurred in 67 (83%) patients (group 1). Of these, 31 (46%) had subsequent re-elevations (group 1a), 26 during the first 4 h, and 20 later. Thirty-six (54%) patients had no recurrence of the ST-segment elevation (group 1b). During follow-up, patients in group 1a experienced more in-hospital reinfarctions (26 versus 6%, P = 0.04) and had a higher rate of occluded infarct-related vessels at angiography than patients in group 1b (40 versus 17%, P = 0.01).

CONCLUSION: During the first 24 h after initiation of thrombolytic therapy, recurrences of ST-segment elevation are frequent in myocardial infarction patients with ECG signs of an initially reperfused infarct-related artery. Recurrence of ST-segment elevation indicates a higher risk of reinfarction during hospitalization and of long-term occlusion of the infarct artery.

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