Myocardial Bridge Anatomical Characteristics Relationship with ECG Changes and Markers
- 10.2991/artres.k.200502.001How to use a DOI?
- Myocardial bridge; ECG; coronary atherosclerosis; CT angiography
Background: The clinical significance of coronary Myocardial Bridge (MB) anatomical characteristics is controversial in the literature. It is not clear whether MB has a benign or malignant clinical outcome.
Objectives: To investigate the possible relationship between MB characteristics (depth, length and volume index) with ECG markers [T Peak-to-End interval (Tp-e), transmural dispersion of repolarization and Index of Cardiac Electrical Balance (iCEB)] and changes (ST-T and S/R ratio changes in V1 and aVL leads).
Patients and Methods: Forty-one patients who were diagnosed as having MB at multi-detector CT exam were enrolled in the study.
Results: MB depth and volume index were associated with notched QRS (p = 0.001 and 0.003 respectively) in the whole sample. The association of notched QRS with MB depth and volume index was more significant in patients with coronary atherosclerosis (p = 0.001 and 0.01 respectively). There was a statistically significant association between MB length (p = 0.006) and volume index (p = 0.001) with an increased S/R ratio in aVL lead in patients free from coronary atherosclerosis. No statistically significant association was observed between MB anatomical characteristics with ECG markers of increased arrhythmia (p > 0.01), including TDR, Tp-e and iCEB.
Conclusion: MB depth and volume index showed a statistically significant association with notched QRS, particularly in patients with coronary atherosclerosis.
The clinical significance of coronary Myocardial Bridge (MB) anatomical characteristics is controversial in the literature.
It is not clear whether MB has benign or malignant clinical outcome.
The results of the present study showed that some MB anatomical characteristics are associated with significant ECG changes.
- © 2020 Association for Research into Arterial Structure and Physiology. Publishing services by Atlantis Press International B.V.
- Open Access
- This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - JOUR AU - Hussein Nafakhi AU - Abdulameer A. Al-Mosawi AU - Samet Kasim PY - 2020 DA - 2020/05/11 TI - Myocardial Bridge Anatomical Characteristics Relationship with ECG Changes and Markers JO - Artery Research SP - 84 EP - 88 VL - 26 IS - 2 SN - 1876-4401 UR - https://doi.org/10.2991/artres.k.200502.001 DO - 10.2991/artres.k.200502.001 ID - Nafakhi2020 ER -