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https://www.readbyqxmd.com/read/27903374/-the-relationship-between-myocardial-bridge-in-mural-coronary-artery-segment-and-coronary-atherosclerosis
#1
S J Ding, R C Huang, C F Jia, L Zhong, P An, Z Q Wang, H Zhu, B L Wu, X C Zhou
Objective: The myocardial bridging (MB) prevalence, anatomic characteristics of MB, and the relationship between characteristics of MB in mural coronary artery segment and coronary atherosclerosis were analyzed. Methods: In this perspective nonrandomized controlled study, a total of 1 132 patients who admitted to our hospital for suspected or known coronary artery disease from January 2012 to June 2013 were enrolled. All patients underwent dual-source 64-slice spiral CT coronary angiography. The general patient characteristics including gender, age, history of hypertension, diabetes, hyperlipidemia and smoking, serum level of total cholesterol (TC) and LDL-C were recorded...
October 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/27895870/systolic-compression-of-a-myocardial-bridged-coronary-artery-and-its-morphologic-characteristics-a-combination-study-of-computed-tomography-angiography-and-invasive-angiography
#2
Abbas Arjmand Shabestari, Roxana Azma, Armin Nourmohammad, Madjid Shakiba
BACKGROUND: Myocardial bridging (MB) is a congenital anomaly in which a segment of a major epicardial coronary artery courses through the myocardium. This anomaly can lead to myocardial ischemia, arrhythmia, and even death. The effectiveness of coronary computed tomographic angiography (CCTA) in the detection of MB and its morphological features, and the accuracy of invasive coronary angiography (ICA) in the evaluation of systolic compression have been shown in some prior studies. OBJECTIVES: The present study aimed to evaluate the correlation between the depth and the length of MB as determined using CCTA, and the degree of luminal narrowing of the involved tunneled segment as calculated using the ICA...
October 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27888388/cardiac-bin1-cbin1-is-a-regulator-of-cardiac-contractile-function-and-an-emerging-biomarker-of-heart-muscle-health
#3
REVIEW
Kang Zhou, Tingting Hong
In recent decades, a cardiomyocyte membrane scaffolding protein bridging integrator 1 (BIN1) has emerged as a critical multifunctional regulator of transverse-tubule (t-tubule) function and calcium signaling in cardiomyocytes. Encoded by a single gene with 20 exons that are alternatively spliced, more than ten BIN1 protein isoforms are expressed with tissue and disease specificity. The recently discovered cardiac alternatively spliced isoform BIN1 (cBIN1 or BIN1+13+17) plays a crucial role in organizing membrane microfolds within cardiac t-tubules...
November 23, 2016: Science China. Life Sciences
https://www.readbyqxmd.com/read/27885888/cangrelor-in-combination-with-ticagrelor-provides-consistent-and-potent-p2y12-inhibition-during-and-after-primary-percutaneous-coronary-intervention-in-real-world-patients-with-st-segment-elevation-myocardial-infarction
#4
Moman A Mohammad, Pontus Andell, Sasha Koul, Stefan James, Fredrik Scherstén, Matthias Götberg, David Erlinge
Patients pretreated with ticagrelor with less than 1 hour from percutaneous coronary intervention (PCI) or receiving ticagrelor in cath lab were prospectively included and received cangrelor. Cangrelor was infused for 2 hours and platelet function was assessed as P2Y12 reactivity units (PRU) with the VerifyNow P2Y12 function assay before start of infusion, 15 min after the start of infusion, and 30 min after the end of infusion. A total of n = 32 patients with an average age of 68 (±13) years with n = 22 (69%) males were included...
November 25, 2016: Platelets
https://www.readbyqxmd.com/read/27873497/high-prevalence-and-clinical-implication-of-myocardial-bridging-in-patients-with-early-repolarization
#5
Jiwon Seo, Junbeom Park, Jaewon Oh, Jae Sun Uhm, Jung Hoon Sung, Jong Youn Kim, Hui Nam Pak, Moon Hyoung Lee, Boyoung Joung
PURPOSE: Recent evidence suggests that early repolarization (ER) is related with myocardial ischemia. Compression of coronary artery by a myocardial bridging (MB) can be associated with clinical manifestations of myocardial ischemia. This study aimed to evaluate the associations of MB in patients with ER. MATERIALS AND METHODS: In consecutive patients (n=1303, age, 61±12 years) who had undergone coronary angiography, we assessed the prevalence and prognostic implication of MB in those with ER (n=142) and those without ER (n=1161)...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27866652/tortuosity-recurrent-segments-and-bridging-of-the-epicardial-coronary-arteries-in-patients-with-the-takotsubo-syndrome
#6
Luca Arcari, Luca Rosario Limite, Luca Cacciotti, Alessandro Alonzo, Maria Beatrice Musumeci, Ilaria Passaseo, Giuseppe Marazzi, Andrea Berni, Gerardo Ansalone, Massimo Volpe, Camillo Autore
Myocardial bridging (MB) and a long recurrent wraparound left anterior descending artery (wrap-LAD) are coronary anatomic variants that have been recently suggested to be associated with takotsubo syndrome (TS). Until now, coronary artery tortuosity (CAT) has never been investigated in this setting. Our study sought to evaluate the prevalence of the aforementioned anatomic variants in a large population with TS. In this retrospective angiographic study, 109 patients with TS were compared with 109 age- and gender-matched subjects without coronary artery disease, valve heart disease, or cardiomyopathy...
October 8, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27863365/preoperative-evaluation-of-coronary-artery-fistula-using-dual-source-computed-tomography
#7
Ke Shi, Hong-Ling Gao, Zhi-Gang Yang, Qin Zhang, Xi Liu, Ying-Kun Guo
OBJECTIVES: To evaluate the efficacy of dual-source computed tomography (DSCT) in assessing the morphological features, quantitative features, and associated coronary artery lesions among patients with coronary artery fistula (CAF) before surgery. METHODS: We enrolled 34 patients with CAF that were morphologically and quantitatively analyzed by DSCT and compared the analyses with surgical results (reference standard). The associated coronary artery lesions were also assessed...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27837305/rate-control-by-transoesophageal-atrial-overdrive-pacing-for-refractory-supraventricular-tachycardia-with-severe-ventricular-dysfunction-a-bridge-to-recovery
#8
C Paech, J Janousek, F Wagner, R A Gebauer
Tachyarrhythmia-induced cardiomyopathy (TIC) is a rare, yet life-threatening phenomenon in children. TIC has been defined as myocardial dysfunction that is entirely or partially reversible after control of the responsible tachyarrhythmia and is typically caused by an incessant supraventricular tachycardia. In cases of unsuccessful termination of the tachycardia, cardiogenic shock may occur. Several authors favour the use of mechanical circulatory support in such cases. Particularly with regard to these partly severe cases, the authors would like to present the option of transoesophageal overdrive pacing (TOP) as a tool for initial heart rate control and hemodynamic stabilization of patients with TIC refractory to conventional strategies of tachycardia termination...
November 11, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27807054/myocardial-bridge-as-a-cause-of-persistent-post-percutaneous-coronary-intervention-angina-identified-with-exercise-intracoronary-physiology
#9
Nicola Ryan, Javier Escaned
No abstract text is available yet for this article.
November 2, 2016: European Heart Journal
https://www.readbyqxmd.com/read/27805707/assessment-of-indirect-inflammatory-markers-in-patients-with-myocardial-bridging
#10
Levent Cerit
INTRODUCTION: Myocardial bridging (MB) is a congenital variant of the coronary artery in which a portion of the epicardial coronary artery takes an intramuscular course. Although it is considered a benign anomaly, it may lead to such complications as myocardial ischaemia, acute coronary syndrome, coronary spasm, exercise-induced dysrhythmias or even sudden death. MB may be related to increased inflammatory and atherosclerotic processes. This study was conducted with the aim of evaluating the relationship between neutrophil/lymphocyte ratio (NLR) and MB...
August 19, 2016: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/27800457/myocardial-infarction-secondary-to-inflammatory-myofibroblastic-tumor-obstruction-of-the-left-main-treated-with-primary-pci
#11
James Nguyen, Salil Sethi, Hinan Ahmed, Anand Prasad
INTRODUCTION: Cardiac inflammatory myofibroblastic tumor is a rare tumor that can cause potentially fatal outcomes. CASE PRESENTATION: We describe a case where the tumor originated on the mitral valve and extended through the left ventricular outflow tract and aortic valve and into the left main artery obstructing it. Due to the hemodynamic instability of the patient, we proceeded for cardiac catheterization with the intention to aspirate the mass but were forced to do percutaneous intervention to stabilize the patient and bridge him to surgery...
August 2016: Research in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27798792/bleeding-risk-associated-with-eptifibatide-integrilin-bridging-in-thoracic-surgery-patients
#12
Nathan H Waldron, Torijaun Dallas, Loretta Erhunmwunsee, Tracy Y Wang, Mark F Berry, Ian J Welsby
Antiplatelet use for treatment of coronary artery disease (CAD) is common amongst thoracic surgery patients. Perioperative management of antiplatelet agents requires balancing the opposing risks of myocardial ischemia and excessive bleeding. Perioperative bridging with short-acting intravenous antiplatelet agents has shown promise in preventing myocardial ischemia, but may increase bleeding. We sought to determine whether perioperative bridging with eptifibatide increased bleeding associated with thoracic surgery...
October 31, 2016: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/27785147/temporary-left-ventricular-assistance-for-extreme-postoperative-heart-failure-in-two-infants-with-bland-white-garland-syndrome
#13
Ewa K Urbańska, Szymon Pawlak, Adam Grzybowski, Joanna Śliwka, Jarosław Rycaj, Anna Obersztyn-Zawiślan, Arkadiusz Wierzyk, Roman Przybylski
Anomalous origin of the left coronary artery from the pulmonary artery (Bland-White-Garland syndrome - BWG) is a serious congenital cardiac anomaly leading to myocardial ischemia with severe heart failure. Immediate surgical correction is the treatment of choice, and the risk of postoperative complications depends on the degree of myocardial injury. The authors present two cases of infants with BWG, in whom long-term (175 and 26 days) left ventricular assistance with a Berlin Heart device was used, resulting in successful weaning from the support and subsequent hospital discharge...
September 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/27777114/myocardial-bridges-neither-rare-nor-isolated-autopsy-study
#14
G Teofilovski-Parapid, R Jankovic, V Kanjuh, R Virmani, N Danchin, N Prates, D V Simic, B Parapid
PURPOSE: Myocardial bridge is a congenital anomaly with a markedly variable reported incidence on autopsy (4.7%-86%), likely related to geographical regions. Our previous retrospective study showed a prevalence of 0.8%, which we doubted to be the true one in the examined sample of the Serbian population. To assess the importance of the phenomenon we conducted a 2-year prospective study at the same institution. METHODS: Ninety-six cadaver hearts from adult individuals of both genders (51 men, 45 women) who died from natural causes underwent special dissection...
October 21, 2016: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/27755136/the-wearable-defibrillator-current-technology-indications-and-future-directions
#15
Sven Reek
PURPOSE OF REVIEW: The wearable cardioverter-defibrillator has been available for over a decade. In recent years, the device has been prescribed increasingly for a wide range of indications. The purpose of this review is to describe the technical and clinical aspects of the wearable cardioverter-defibrillator. The available literature on safety, efficacy and cost-effectiveness is reviewed, and indications for use will be discussed. RECENT FINDINGS: The wearable cardioverter-defibrillator has been used successfully in more than 100 000 patients for a variety of indications...
January 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/27745841/surgical-unroofing-of-hemodynamically-significant-left-anterior-descending-myocardial-bridges
#16
Jack H Boyd, Vedant S Pargaonkar, David H Scoville, Ian S Rogers, Takumi Kimura, Shigemitsu Tanaka, Ryotaro Yamada, Michael P Fischbein, Jennifer A Tremmel, Robert Scott Mitchell, Ingela Schnittger
BACKGROUND: Left anterior descending artery myocardial bridges (MBs) range from clinically insignificant incidental angiographic findings to a potential cause of sudden cardiac death. Within this spectrum, a group of patients with isolated, symptomatic, and hemodynamically significant MBs despite maximally tolerated medical therapy exist for whom the optimal treatment is controversial. We evaluated supraarterial myotomy, or surgical unroofing, of the left anterior descending MBs as an isolated procedure in these patients...
October 1, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27736197/spinal-cord-infarction-post-cardiac-arrest-in-stemi-a-potential-complication-of-intra-aortic-balloon-pump-use
#17
Matthew Harris, Grigoris V Karamasis, Shayna Chotai, Kare H Tang, Gerald J Clesham, Paul A Kelly
Intra-aortic balloon pump (IABP) is commonly used as a cardiac assist device in various clinical situations: cardiogenic shock, mechanical complications of acute myocardial infarction, high risk percutaneous coronary interventions, coronary artery bypass graft surgery and refractory unstable angina and ventricular arrhythmias as bridge to therapy. Although current data support its safety, there is limited or no support for its efficacy. We present the case of spinal cord infarction after IABP use in a patient who presented with ST elevation myocardial infarction and cardiac arrest and we discuss the potential mechanism of such a devastating complication...
October 13, 2016: Acute Cardiac Care
https://www.readbyqxmd.com/read/27714723/estimation-of-shear-stress-by-using-a-myocardial-bridge-mural-coronary-artery-simulating-device
#18
Hao Ding, Qian Yang, Kun Shang, Hailian Lan, Jie Lv, Zhilin Liu, Yang Liu, Lixing Sheng, Yanjun Zeng
BACKGROUND: This study was aimed at developing a myocardial bridge-mural coronary artery simulative device and analyzing the relationship between shear stress on the mural coronary artery and atherosclerosis. METHODS: A myocardial bridge-mural coronary artery simulative device was used to simulate experiments in vitro. In the condition of maintaining any related parameters such as system temperature, average flow rate, and heart rate, we calculated and observed changes in proximal and distal mean values, and oscillatory value of shear stress on the mural coronary artery by regulating the compression level of the myocardial bridge to the mural coronary artery...
October 7, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27710800/noninvasive-assessment-of-myocardial-bridging-by-coronary-flow-velocity-reserve-with-transthoracic-doppler-echocardiography-vasodilator-vs-inotropic-stimulation
#19
Srdjan Aleksandric, Ana Djordjevic-Dikic, Branko Beleslin, Biljana Parapid, Gordana Teofilovski-Parapid, Jelena Stepanovic, Dragan Simic, Ivana Nedeljkovic, Milan Petrovic, Milan Dobric, Miloje Tomasevic, Marko Banovic, Milan Nedeljkovic, Miodrag Ostojic
BACKGROUND: To consider hemodynamic assessment of myocardial bridging (MB) adequate, it is believed that inotropic stimulation with dobutamine should be estimated because its dynamic nature depends on the degree of extravascular coronary compression. This study evaluated comparative assessment of hemodynamic relevance of MB using coronary flow velocity reserve (CFVR) measurements by transthoracic Doppler echocardiography (TTDE) with vasodilatative and inotropic challenges. METHODS: This prospective study included forty-four patients with angiographic evidence of isolated MB of the left anterior descending coronary artery (LAD) and systolic compression of ≥50% diameter stenosis...
September 28, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27694033/is-the-coronary-artery-myocardial-bridging-and-left-anterior-descending-straightening-mediated-by-the-myocardial-wall-motion-abnormalities-and-edema-in-takotsubo-syndrome
#20
John E Madias
No abstract text is available yet for this article.
September 28, 2016: International Journal of Cardiology
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