Minor Myocardial Damage and Prognosis Are Spontaneous and Percutaneous Coronary Intervention–Related Events Different?
2002
Background— The relevance of the adverse prognostic implications of CK-MB elevation after percutaneous coronary intervention (PCI) remains controversial. Therefore, we compared the relationship between the level of postprocedural CK-MB elevation and 6-month mortality in patients undergoing PCI with the relationship between the level of spontaneous, non–PCI-related CK-MB elevation and 6-month mortality in patients with acute coronary syndromes (ACS) treated medically. Methods and Results— In the PURSUIT trial, 5583 of 9461 patients who presented with a non–ST-elevation ACS did not undergo PCI or CABG and had at least 1 CK-MB sample collected during index-hospitalization. There was a gradual increase in 6-month mortality with higher CK-MB levels: 4.1%, 8.6%, 9.0%, 14.3%, 15.5% for CK-MB ratios 0 to 1, >1 to 3, >3 to 5, >5 to 10, and >10 times the upper limit of normal. A combined analysis in 8838 patients undergoing PCI in 5 large, clinical trials revealed a proportional relationship between postprocedural ...
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