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Myocardial Bridge Anatomical Characteristics Relationship with ECG Changes and Markers

Artery Research volume 26, pages 84–88 (2020)Cite this article

Abstract

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.

Highlights

  • 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.

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Authors and Affiliations

  1. Internal Medicine Department, Medicine College, University of Kufa, Najaf, Iraq

    Hussein Nafakhi & Samet Kasim

  2. Radiology Department, Medicine College, University of Kufa, Najaf, Iraq

    Abdulameer A. Al-Mosawi

Authors
  1. Hussein Nafakhi
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  2. Abdulameer A. Al-Mosawi
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  3. Samet Kasim
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Corresponding author

Correspondence to Hussein Nafakhi.

Additional information

Peer review under responsibility of the Association for Research into Arterial Structure and Physiology

Data availability statement: The data that support the findings of this study are available from the corresponding author (HN), upon reasonable request.

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This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

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Nafakhi, H., Al-Mosawi, A.A. & Kasim, S. Myocardial Bridge Anatomical Characteristics Relationship with ECG Changes and Markers. Artery Res 26, 84–88 (2020). https://doi.org/10.2991/artres.k.200502.001

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  • DOI: https://doi.org/10.2991/artres.k.200502.001

Keywords

Artery Research

ISSN: 1876-4401

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