TCT-635 Unmasking Myocardial Bridge Related Ischemia by Intracoronary Functional Evaluation
نویسندگان
چکیده
منابع مشابه
Intracoronary Levosimendan during Ischemia Prevents Myocardial Apoptosis
BACKGROUND Levosimendan is a calcium sensitizer that has been shown to prevent myocardial contractile depression in patients post cardiac surgery. This drug exhibits an anti-apoptotic property; however, the underlying mechanism remains elusive. In this report, we characterized the myocardial protective of levosimendan in preventing cardiomyocyte apoptosis and post-operative stunning in an exper...
متن کامل[Two cases of myocardial bridge associated with myocardial ischemia].
と拡張期で内径は顕著には変化しない.しかし,冠動 脈造影の施行例を検討すると,冠動脈が収縮期にのみ 狭窄像を呈し,拡張期には正常化する症例が散見され る.この現象は,通常心外膜側表面を走行すべき冠動 脈が,一部心筋層内を走行し,その結果収縮期に収縮 した心筋により圧迫され,冠動脈造影上狭窄像を呈す ることになる.この所見は機能的変化によるもので, 冠動脈の動脈硬化性病変とは明らかに異なり,臨床的 にも区別して取り扱うことが必要である.このような 現象が心筋ブリッジ(myocardial bridge,または myocardial squeezing)と呼ばれるもので,心筋虚血および 動脈硬化症との関連性が注目されている.以下に myocardial bridge と心筋虚血との関係を示唆する 2 症例 を紹介する. 症例 1:72 歳,女性.発作性心房細動および狭心症 にて外来通院中...
متن کاملArrhythmogenic influence of intracoronary thrombosis during acute myocardial ischemia.
BACKGROUND Patients with acute coronary artery thrombosis often develop primary malignant ventricular arrhythmias (MVA) early after coronary occlusion. In contrast, acute ischemia induced by nonthrombotic balloon occlusion during routine coronary angioplasty rarely elicits such arrhythmias. This study was designed to assess the role of intracoronary thrombosis in arrhythmogenesis during acute i...
متن کاملA rare localization of muscular bridge causing myocardial ischemia.
The coronary arteries are normally localized subepicardially and are visible on the surface of the heart. Myocardial bridge is a most common congenital abnormality of coronary arteries. A segment of coronary artery travelling trough myocardial tissue, which is called tunneled artery, exhibits compression during systole. Generally, it is a benign condition and often asymptomatic, but it may also...
متن کاملAssessment of Myocardial Bridge by Cardiac CT: Intracoronary Transluminal Attenuation Gradient Derived from Diastolic Phase Predicts Systolic Compression.
OBJECTIVE To study the predictive value of transluminal attenuation gradient (TAG) derived from diastolic phase of coronary computed tomography angiography (CCTA) for identifying systolic compression of myocardial bridge (MB). MATERIALS AND METHODS Consecutive patients diagnosed with MB based on CCTA findings and without obstructive coronary artery disease were retrospectively enrolled. In to...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2018
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2018.08.1839