Background: Baseline Q waves may provide additional value compared with time from the
onset of symptoms in predicting outcomes for patients with ST-segment elevation. We …

Objectives: We assessed the incremental value of baseline Q waves over time from
symptom onset as a marker of clinical outcome in ST-segment elevation myocardial …

Q waves can develop early in infarction and indicate infarct progression better than symptom
duration. ST resolution (STR) is a predictor of reperfusion success. Our aim was to assess …

Background The prognostic value of time from symptom onset to reperfusion may be
enhanced by the identification of Q waves on the presenting electrocardiogram (ECG) in …

Background Presence of Q waves on the presenting electrocardiogram (ECG) in patients
with ST‐segment elevation myocardial infarction (STEMI) has been associated with worse …

Background—Using a comprehensive ST-segment–elevation myocardial infarction registry,
we evaluated the relationships of baseline Q waves, time from symptom onset, and …

Q waves have been shown to be a stronger prognostic marker than time from symptom
onset to percutaneous coronary intervention (PCI) in ST-segment elevation myocardial …

BACKGROUND: Q-waves in ST-elevation acute coronary syndromes carry adverse
implications. We sought to determine the frequency, predictors, and implications of Q-waves …

Objectives To evaluate quantitative relationships between baseline Q-wave width and 90-
day outcomes in ST-segment elevation myocardial infarction (STEMI). Background Baseline …

Aims The prognostic significance of pathological Q waves appearing in the acute phase of
myocardial infarction has not been determined. We investigated whether new Q waves on …