Back to Search
Start Over
The relation between QRS complex fragmentation and segmental abnormalities of the myocardial contractility in patients with coronary artery disease
- Source :
- Indian Heart Journal, Vol 73, Iss 3, Pp 325-330 (2021)
- Publication Year :
- 2021
- Publisher :
- Elsevier, 2021.
-
Abstract
- Background: Fragmented QRS (fQRS) is defined as any QRS complex with duration of less than 120 ms (ms) and at least one notch in the R or S wave in two or more leads belonging to the same coronary territory. The fQRS represents a delay in ventricular conduction caused by a myocardial scar associated to arrhythmic events. Methods: This is a descriptive, retrospective, cross-sectional study of a total of 123 patientsadmitted with ischemic heart disease. The aim was to correlate the presence of fQRS in a conventional 12-leads electrocardiogram (ECG) with myocardial regional motility disorders. Results: A total of 62% of the patients were male, the mean age was 63 ± 12 SD. fQRS was observed in 44% (64% men and 36% women), the most frequent location being the inferior wall (61%), followed by the anteroseptal and lateral walls (14% for both). Of the 36 patients with fQRS, 30 had segmental disorders, while 6 did not. Of the 45 patients without fQRS, 28 had segmental disorders, but 17 did not, which gives us a sensitivity of 52% (moderate SnNout) and specificity of 74% (high SpPin), with a positive predictive value of 83%, a negative predictive value of 38% and a prevalence of 72%. Conclusion: The presence of fQRS in the ECG has high specificity and a high positive predictive value of the existence of segmental myocardial motility disorders in patients with documented coronary artery disease.
Details
- Language :
- English
- ISSN :
- 00194832
- Volume :
- 73
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Indian Heart Journal
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.257244b1e1044b76a723b3d1ae89844c
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.ihj.2021.03.010