Coronary artery diseasePrognostic Significance of Fragmented QRS Complex for Predicting the Risk of Recurrent Cardiac Events in Patients With Q-Wave Myocardial Infarction
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Methods and Results
The Multicenter Study of Myocardial Ischemia (MSMI) study enrolled 936 patients from 12 centers in the United States, Canada, and Israel. Enrollment began on July 1, 1988 and ended on May 31, 1991 with follow-up through November 30, 1991. All patients admitted to the coronary care unit with documented MI or unstable angina were considered for enrollment. Full details and major results of this study have been previously published.7 Confirmation of enzyme level elevation was necessary for the
Discussion
Our analysis of patients with Q-wave MI showed that presence of persistent Q waves on the ECG in the stable postinfarction period (2 months after MI on average) is associated with a more favorable prognosis compared with patients with resolved Q waves. In patients with resolved Q waves, fragmentation of the QRS complex, identified independently of the presence of Q waves, was associated with increased risk of cardiac events. The risk of the patients who had resolved Q waves and did not have QRS
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Prognostic Significance of Fragmented QRS in Patients with Acute Ischemic Stroke
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2021, Journal of ElectrocardiologyThe relation between QRS complex fragmentation and segmental abnormalities of the myocardial contractility in patients with coronary artery disease
2021, Indian Heart JournalCitation Excerpt :The fQRS, evaluated on the 12-lead electrocardiogram (ECG), represents a delay in ventricular conduction caused by the presence of a myocardial scar. Even without being specific to CAD, it was associated to an increased risk of mortality and arrhythmic events as an addition to the already known ejection fraction (EF), which proved to be a good prognostic marker.16–24 The fQRS was defined as a QRS complex with duration of less than 120 ms and at least one notch in the R or S wave in two or more leads belonging to the same coronary territory.21–26
The prognostic value of the combined use of QRS distortion and fragmented QRS in patients with acute STEMI undergoing primary percutaneous coronary intervention
2018, Journal of ElectrocardiologyCitation Excerpt :Previous studies showed that QRS distortion was associated with more advanced stage of infarction, higher risk of re-infarction, increased in-hospital mortality rate, lower left ventricular functions, and poor prognosis in patients with acute STEMI undergoing pPCI [8]. Similarly, the associations of fQRS with increased in-hospital mortality, sudden cardiac death, cardiac arrhythmia, lower LVEF, and adverse outcomes have also been reported [10,17,19,20]. However, the prognostic value of the combined use of these two parameters in acute STEMI has not been investigated yet.
The relationship between fragmented QRS and functional significance of coronary lesions
2017, Journal of Electrocardiology