Myocardial bridging on dual-source computed tomography: degree of systolic compression of mural coronary artery correlating with length and depth of the myocardial bridge

Liu, Shihe; Yang, Qin; Chen, Jiuhong; Wang, Ximing; Wang, Min; Liu, Cheng

doi:10.1016/j.clinimag.2009.05.010

Cited by 34 publications

(19 citation statements)

References 22 publications

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“…However, the majority of such patients exhibit no considerable atherosclerosis in the LAD; their symptoms could be caused by the hemodynamic alterations brought about by MB contraction. ICA may predispose to myocardial ischemia in systole and diastole in the absence 17 In our study, the superficial type ICA was positively associated with insignificant stenosis and negatively associated with significant stenosis proximal to ICA. Traditionally, the area under the MB has been considered to be spared from atherosclerosis, and the area just proximal to it has been considered to be prone to the development of atherosclerosis along with shear stress considerations.…”

Section: Discussionsupporting

confidence: 46%

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Wang

Chen

et al. 2013

ATVB

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Objective-The clinical significance of an intramural course (or bridging) of the coronary artery remains controversial. We investigated the relationship between intramural coronary arteries (ICAs) and coronary stenosis and prognosis of subjects with ICA. Methods and Results-ICA and coronary stenosis were assessed by multidetector computed tomography coronary angiography. ICAs in the left anterior descending artery were studied, which were further classified as superficial (≤2 mm) or deep type (>2 mm). Coronary stenosis was classified as nonstenosis, insignificant stenosis (<50%), and significant stenosis (≥50% Key Words: coronary artery stenosis ◼ intramural coronary artery ◼ major cardiac event ◼ multidetector computed tomography ◼ myocardial bridging

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Section: Discussionsupporting

confidence: 46%

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Wang

Chen

et al. 2013

ATVB

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“…They include anatomic variables such as the length, thickness, and location of the myocardial bridge and physiologic factors such as heart rate and blood pressure. 21 Liu et al 28 reported that systolic compression of the mural coronary artery is not related to the length but to the depth or thickness of the myocardial bridge. Similarly, in our study, there were no significant differences in the lengths and locations of the myocardial bridges among all three groups, but the difference in the thicknesses of the myocardial bridges was significant.…”

Section: Left Ventricular Systolic Function In Patients With Mbmentioning

confidence: 99%

Evaluation of Left Ventricular Function by Three-Dimensional Speckle-Tracking Echocardiography in Patients with Myocardial Bridging of the Left Anterior Descending Coronary Artery

Wang

Sun

Lee³

et al. 2015

Journal of the American Society of Echocardiography

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“…[54][55][56] The magnitude of systolic compression is in turn related to the contractile force of the myocardial bridge which is governed by its length 57 and thickness. 58,59 In angiographic studies with intravascular ultrasound scans, longer bridges have been associated with more severe systolic compression 57 and on multidetector CT deeper bridges with more severe systolic compression. 58,59 These reports suggest that the anatomic properties of a myocardial bridge may influence the degree of systolic compression, the presence and magnitude of myocardial ischemia, and the subsequent occurrence of myocardial infarction.…”

Section: Coronary Flow and Systolic Compression In Myocardial Bridgingmentioning

confidence: 99%

Myocardial bridging on coronary CTA: An innocent bystander or a culprit in myocardial infarction?

Nakanishi

Rajani

Ishikawa

et al. 2012

Journal of Cardiovascular Computed Tomography

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Myocardial bridging describes the clinical entity whereby a segment of coronary artery is either partially or completely covered by surrounding myocardium. It represents the most frequent congenital coronary anomaly and has an estimated prevalence of ≤13% on angiographic series. With the emergence of cardiac computed tomography and its ability to simultaneously image the coronary arteries and also the myocardium, there has been an apparent increase in the detection rates of myocardial bridges (prevalence as high as 44%). It has now become important to evaluate their clinical significance. Myocardial bridging is generally considered a benign entity with survival rates of 97% at 5 years; however, there is now emerging evidence that certain myocardial bridge characteristics may be associated with cardiovascular morbidity. The length and depth of myocardial bridges have been associated with increased atherosclerosis, whereas the degree of systolic compression has been associated with ischemia on myocardial perfusion single-photon emission tomography. On the basis of current evidence, it appears that limiting further testing for ischemia to symptomatic patients with long and/or deep myocardial brides would be appropriate.

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Myocardial bridging on dual-source computed tomography: degree of systolic compression of mural coronary artery correlating with length and depth of the myocardial bridge

Cited by 34 publications

References 22 publications

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events

Evaluation of Left Ventricular Function by Three-Dimensional Speckle-Tracking Echocardiography in Patients with Myocardial Bridging of the Left Anterior Descending Coronary Artery

Myocardial bridging on coronary CTA: An innocent bystander or a culprit in myocardial infarction?

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