Implications of ischaemic area at risk and mode of reperfusion in ST-elevation myocardial infarction

Heart
Kevin R BaineySTREAM Investigators

Abstract

Uncertainty exists concerning the relative merits of pharmacological versus mechanical coronary reperfusion in patients presenting early with ST-elevation myocardial infarction (STEMI) with extensive myocardium at risk. Accordingly, we investigated whether the extent of baseline ST-segment shift was related to the response of either reperfusion modality in patients with STEMI presenting within 3 h of symptoms. We analysed baseline ECGs from 1859 patients enrolled in the STrategic Reperfusion Early After Myocardial Infarction (STREAM) trial. The sum of ST-segment elevation (∑STE) and ST-segment deviation (∑STD) was categorised into quartiles and associations with the primary endpoint (30-day death/shock/congestive heart failure/re-myocardial infarction) for each reperfusion strategy (early fibrinolysis vs primary percutaneous coronary intervention) were explored. Overall, there was a progressive rise in the 30-day primary endpoint according to quartiles of baseline ∑STE (10.3% (0-5 mm), 12.4% (5.5-8.5 mm), 12.1% (9-13.5 mm), 17.6% (> 14.0 mm), p = 0.008) and ∑STD (9.0% (0-9 mm), 13.5% (9.5-14 mm), 14.7% (14.5-20 mm), 15.3% (> 20 mm), p = 0.019). Both ∑STE and ∑STD were associated with the primary endpoint (∑STE: p = 0.071; ∑STD:...Continue Reading

References

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Dec 3, 2009·European Heart Journal·Michael C TjandrawidjajaUNKNOWN APEX-AMI Investigators
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Aug 28, 2012·European Heart Journal·UNKNOWN Task Force on the management of ST-segment elevation acute myocardial infarction of the European Society of Cardiology (ESC)Doron Zahger
Mar 12, 2013·The New England Journal of Medicine·Paul W ArmstrongUNKNOWN STREAM Investigative Team

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