Myocardial bridging as a cause of acute myocardial infarction: a case report

Akdemir, Ramazan; Gündüz, Hüseyin; Emiroğlu, Yunus; Uyan, Ci̇hangi̇r

doi:10.1186/1471-2261-2-15

Cited by 31 publications

(21 citation statements)

References 11 publications

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“…Therefore, further efforts still need to be made to reveal the link between blood flow in the mural coronary artery and MB [13][14][15][16][17][18][19][20][21]. Designing of a simulative device of heart-mural coronary artery-myocardial bridge is of great significance as an addition to the clinical research.…”

Section: Introductionmentioning

confidence: 99%

Heart Pump System in “Heart—Mural coronary artery—Myocardial Bridge” Simulative Device

Ding

Chen

Shen

et al. 2009

Australas. Phys. Eng. Sci. Med.

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The myocardial tissue covering the artery is termed a myocardial bridge. But so far many researches on the myocardial bridge have been involved with clinical patients or animals, which have some limitations (e.g. lack of systematicness, difficulties in measuring the flow in the mural coronary artery and so on). Designing a "Heart-Mural coronary artery-Myocardial Bridge" Simulative Device provides a good approach to solve above problems; however, documents on this subject have seldom been reported until now. The heart pump as the key part of the whole simulative device should be able to simulate the waveform of blood pressure, adjust blood flow and regulate heart rate. Our experimental results basically met above requirements. The heart pump proposed in the paper presented an alternative experimental method to go further into other issues about the cardiovascular circulation system.

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Section: Introductionmentioning

confidence: 99%

Heart Pump System in “Heart—Mural coronary artery—Myocardial Bridge” Simulative Device

Ding

Chen

Shen

et al. 2009

Australas. Phys. Eng. Sci. Med.

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“…2a, b) [1, 2]. MB has been associated with myocardial infarction (MI), sudden cardiac death, supraventricular and ventricular arrhythmias, QT interval changes, transient left ventricular dysfunction and coronary artery spasm [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]. …”

Section: Introductionmentioning

confidence: 99%

Myocardial Bridging in Absence of Coronary Artery Disease: Proposal of a New Classification Based on Clinical-Angiographic Data and Long-Term Follow-Up

Schwarz

Gupta²,

Haager³

et al. 2008

Cardiology

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Background: There is no widely accepted classification to guide therapy in patients with symptomatic myocardial bridging (MB). Methods: A retrospective analysis of 157 patients with chest pain, angiographic MB of the left anterior descending artery without obstructive coronary artery disease (CAD) was performed. Patients were evaluated for clinical symptoms, objective signs of ischemia by stress test, intracoronary Doppler flow measurement and coronary flow reserve. 100 patients without CAD or MB served as controls. Results: There was no difference in clinical symptoms and objective signs of ischemia between controls and patients with MB. The length of MB was 22.6 ± 7.8 mm, maximal systolic luminal diameter reduction 71 ± 16%, and maximal mid-diastolic luminal reduction 34.7 ± 13% as demonstrated by quantitative coronary angiography (QCA). Intracoronary Doppler showed significantly increased average peak flow velocity (APV), average systolic peak velocity (ASPV), average diastolic peak flow velocity (ADPV), and maximal peak velocity (MPV) in MB versus proximal and distal segments at rest and after maximal vasodilatation (p < 0.001 for all parameters). Coronary flow reserve was significantly higher proximally (2.9 ± 0.9) compared with segments distal to the MB (2.0 ± 0.6, p < 0.01). We propose a new MB classification for symptomatic patients with MB:Type A:incidental finding on angiography, no objective signs of ischemia; Type B: objective signs of ischemia, and Type C: with or without objective signs of ischemia and altered intracoronary hemodynamics (by QCA/CFR/intracoronary Doppler). 5-Year follow-up data based on this classification showed that types B and C responded well to β-blockers or calcium channel antagonists. Patients with type C refractory to medical therapy were treated with stenting of the MB. Conclusion: Patients with MB without CAD did not have a higher prevalence of chest pain or abnormal non-invasive stress tests compared to patients without CAD or MB. Intracoronary hemodynamic measurement is a novel approach that may be valuable in defining the functional significance of MB. We propose a classification of symptomatic patients with MB without CAD using non-invasive and invasive parameters to guide therapeutic choices.

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“…Hastalık asıl olarak sol ön inen arterde görülmekle birlikte literatürde SKA'da MK'nin bildirildiği birkaç vaka da mevcuttur [5,6]. MK'nin miyokardiyal iskemi için fonksiyonel önemi halen tartışmalı olmasına karşın, angina ve akut MI ile ilişkilendirildiği klinik vakalar mevcuttur [7,8]. Dahası MK köprüleşen kısmın proksimalinde ateroskleroz gelişimine eğilimi arttırır ve bu yolla koroner arter hastalığı için anatomik bir risk faktörü gibi davranır [4].…”

Section: Discussionunclassified

Sağ koroner arterin miyokardiyal köprüleşmesi: Olgu sunumu

Aksu¹,

Çi̇men²,

Sen³

et al. 2012

CMJ

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ÖzetMiyokardiyal köprüleşme ana epikardiyal koroner arterlerin birinin miyokard içerisinde seyretmesi durumudur ve genellikle sol ön inen artere sınırlıdır. Anjiyografik değerlendirmede sağ koroner arterde miyokardiyal köprüleşme birkaç kez bildirilmiştir. Biz akut inferiyor miyokardiyal infarktüs kliniği ile başvuran ve yapılan koroner anjiyografisinde sağ koroner arterde ciddi MK saptanan 64 yaşında bir erkek hastayı sunduk. Anahtar sözcükler: Miyokardiyal köprüleşme, koroner, infarktüs AbstractA myocardial bridge is defined as an intramyocardial course of a major epicardial coronary artery, and it is mainly confined to the left anterior descending coronary artery. There are rare reports of right coronary myocardial bridge seen during angiographic examination. Herein, we present a 64 year-old male patient who appired with the clinical findings of acute inferior myocardial infarction and was found to have serious myocardial bridge in right coranary artery after coranary angiography. Keywords Olgu sunumuAltmış dört yaşında hipertansif erkek hasta göğüs ağrısı yakınması ile başvurduğu dış merkezde çekilen EKG'sinde inferoposterolateral miyokard infarktüsü (MI) saptanması

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Myocardial bridging as a cause of acute myocardial infarction: a case report

Cited by 31 publications

References 11 publications

Heart Pump System in “Heart—Mural coronary artery—Myocardial Bridge” Simulative Device

Heart Pump System in “Heart—Mural coronary artery—Myocardial Bridge” Simulative Device

Myocardial Bridging in Absence of Coronary Artery Disease: Proposal of a New Classification Based on Clinical-Angiographic Data and Long-Term Follow-Up

Sağ koroner arterin miyokardiyal köprüleşmesi: Olgu sunumu

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