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The relationship between coronary slow-flow and frontal QRS-T angle
Ferhat Işık1, Burhan Aslan1, Murat Çap1
1University of Health Sciences, Gazi Yaşargil Training and Research Hospital, Department of Cardiology, Diyarbakır, Turkey.
Journal of Electrocardiology
|March 26, 2021
Summary
The frontal QRS-T angle, a marker of ventricular repolarization, is elevated in patients with coronary slow-flow (CSF) phenomenon. This angle also correlates with the severity of CSF, indicating its potential as a diagnostic indicator.
Area of Science:
- Cardiology
- Electrophysiology
- Diagnostic Markers
Background:
- Increased frontal QRS-T angle is linked to adverse cardiac outcomes.
- Coronary slow-flow (CSF) phenomenon is associated with arrhythmias and sudden cardiac death.
Purpose of the Study:
- To investigate the relationship between the frontal QRS-T angle and CSF in patients.
- To determine if CSF severity correlates with the frontal QRS-T angle.
Main Methods:
- Included 200 patients: 97 with CSF and 103 with normal coronary flow (NCF).
- Calculated TIMI-frame count from coronary angiography.
- Measured frontal QRS-T angle from 12-lead ECG automated reports.
Main Results:
- Frontal QRS-T angle was significantly higher in the CSF group (48°) compared to the NCF group (37°).
- A positive correlation was found between frontal QRS-T angle and TIMI-frame count in CSF patients.
- Multi-vessel CSF patients exhibited a higher frontal QRS-T angle than single-vessel CSF patients.
Conclusions:
- The frontal QRS-T angle is elevated in patients with CSF.
- A positive correlation exists between the frontal QRS-T angle and CSF severity (TIMI-frame count).
- The frontal QRS-T angle may serve as a valuable marker for identifying and assessing CSF.
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