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Prognostic impact of terminal T wave inversions on presentation in patients with ST-elevation myocardial infarction undergoing urgent percutaneous coronary intervention.
J Electrocardiol. 2013 Jan-Feb;46(1):2-7
Authors: Shimada YJ, Po JR, Kanei Y, Schweitzer P
Abstract
INTRODUCTION: Terminal T wave inversions (TTWI) indicate advanced stages of ST-elevation myocardial infarction (STEMI). The present study investigated whether TTWI predict unfavorable in-hospital outcomes in STEMI patients treated with urgent percutaneous coronary intervention (PCI).
METHODS: A retrospective cohort study was performed with consecutive 188 STEMI cases undergoing urgent PCI. The primary endpoint was in-hospital major adverse cardiac event (MACE), and the secondary endpoints were ST resolution (STR) after PCI and length of stay (LOS).
RESULTS: TTWI on presentation were independently associated with higher incidence of in-hospital MACE (adjusted OR 2.8; 95% CI 1.1-7.0; p=0.03), inadequate STR (adjusted OR 5.5; 95% CI 2.1-14.3; p=0.01), and longer LOS (adjusted mean increase 4.1 days; 95% CI 0.3-7.9; p=0.03). TTWI predicted these outcomes better than patient-reported ischemic time or pathologic Q waves.
CONCLUSIONS: TTWI on presentation are an independent risk factor for poor inpatient prognosis among patients presenting with STEMI undergoing urgent PCI.
PMID: 23312357 [PubMed - in process]