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Choudhuri Indrajit I Aurora Cardiovascular Services, Aurora Sinai/Aurora St. Luke's Medical Centers, University of Wisconsin School of Medicine and Public Health, Milwaukee, Wisconsin, - - 2014
In patients with intraatrial conduction delay and sinus node dysfunction, pacing Bachmann's bundle (BBR) and coronary sinus ostium (CSO) has been suggested to achieve atrial resynchronization with potential beneficial impact on atrial fibrillation and diastolic heart failure. Clinical studies have not shown superiority of one approach. We studied electrical activation ...
Neves Victor Ribeiro VR Faculdade de Medicina and Hospital das Clínicas, Universidade Federal de Minas Gerais, Avenida Professor Alfredo Balena, 190-Santa Efigênia, Belo Horizonte, 30130-100 Minas Gerais, - - 2014
We applied the respiratory sinus arrhythmia (RSA) quantification algorithm to 24-hour ECG recordings of Chagas disease (ChD) patients with (G1, n=148) and without left ventricular dysfunction (LVD) (G2, n=33), and in control subjects (G0, n=28). Both ChD groups displayed a reduced RSA index; G1=299 (144-812); G2=335 (162-667), p=0.011, which was ...
Chen Yingming Amy YA Department of Medical Imaging, Peter Munk Cardiac Centre, University Health Network, University of Toronto, Toronto, - - 2014
The coronary sinus (CS) is an important vascular structure that allows for access into the coronary veins in multiple interventional cardiology procedures, including catheter ablation of arrhythmias, pacemaker implantation and retrograde cardioplegia. The success of these procedures is facilitated by the knowledge of the CS anatomy, in particular the recognition ...
Faggioni Michela M Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical School, Medical Research Building IV, Rm. 1265, 2215B Garland Ave, Nashville, TN 37232-0575; Department of Cardiology, University of Pisa, Pisa, - - 2014
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited heart rhythm disorder characterized by the occurrence of potentially life-threatening polymorphic ventricular tachyarrhythmias in conditions of physical or emotional stress. The underlying cause is a dysregulation in intracellular Ca handling due to mutations in the sarcoplasmic reticulum Ca release unit. Recent experimental ...
Carbone Vincenzo V Department of Medicine and Pharmacology, University of Messina, Messina, - - 2014
The electrocardiogram of a 72-year-old woman showed episodes of nonsustained narrow QRS complex tachycardia. Tracing analysis suggested that the arrhythmia was due to interpolated atrial extrasystoles occurring in bigeminal rhythm. Interpolation of atrial extrasystoles is a rare phenomenon. In this condition, a premature atrial beat is "sandwiched" between 2 normal ...
Kirkland Scott S Department of Emergency Medicine, University of Alberta, Edmonton, Alberta, - - 2014
Electrical cardioversion is commonly used to treat patients with atrial fibrillation and atrial flutter to restore normal sinus rhythm. There has been considerable debate as to whether the electrode placement affects the efficacy of electrical cardioversion. The objective of this study was to examine the effectiveness of anteroposterior (A-P) versus ...
Chambers Jeffrey W JW The Heart Center, Metropolitan Heart and Vascular Institute, Mercy Hospital, Suite 120, 4040 Coon Rapids Boulevard, Minneapolis, MN 55433, - - 2014
Coronary lesions with severe (or heavy) calcification are classified as complex lesions and are known to carry lower success rates and higher complication rates following percutaneous coronary intervention. The Diamondback 360(®) Coronary Orbital Atherectomy System is the first and only device approved for use in the USA as a treatment ...
Marley William Dominic WD Department of Cardiothoracic Surgery, Royal Victoria Hospital, Belfast, UK - - 2014
Sinus of Valsalva aneurysm is a rare presenting feature of ST-elevation myocardial infarction. We describe such a case which resolved with thrombolysis, and on further investigation, the patient was found to have a large sinus of Valsalva aneurysm. Abnormal gross pathology at the time of surgery was suspected to be ...
Yan Xian-Liang - - 2014
Congenital anomalous coronary sinus ostium is extremely rare. We describe a case of congenital left atrial coronary sinus ostium in a patient scheduled for ablation for atrial fibrillation. The anomalous coronary sinus ostium was found when contrast was injected during the ablation procedure and was confirmed by cardiac computed tomography.
Orosz Szabolcs S aGedeon Richter Plc., Budapest, Hungary; bDepartment of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary; cDepartment of Electrical Engineering and Cybernetics, Kecskemét College, Kecskemét, Hungary; dDivision of Cardiovascular Pharmacology, Hungarian Academy of Sciences, Szeged, Hungary; e2nd Department of Medicine and Cardiology Centre, University of Szeged, Szeged, - - 2014
Isolated hearts with reduced repolarization reserve would be suitable for assessing the proarrhythmic liability of drugs. However, it is not known which proarrhythmia biomarkers indicate the increased susceptibility to torsades de pointes arrhythmia (TdP) in such experimental setting. Thus, we estimated the efficacy of proarrhythmia biomarkers in isolated hearts with ...
Ito Yoko Y Cardiovascular Division, Institute of Clinical Medicine, University of - - 2014
Although several reports address characteristic 12-lead ECG findings of outflow tract ventricular arrhythmias (OT-VAs), accuracy of the ECG algorithms to predict OT-VA origin is sometimes limited. This study aimed to develop a magnetocardiography (MCG)-based algorithm using a novel adaptive spatial filter to differentiate between VAs originating from the aortic sinus ...
Krzy┼╝anowski Krystian K Military Institute of Medicine in Warsaw, Department of Cardiology and Internal Diseases. - - 2014
Several clinical and experimental studies have shown that unnecessary right ventricular pacing in sinus node disease can be detrimental. Inter- and intraventricular asynchrony imposed by right ventricular pacing may cause reduction in contractility and relaxation of left ventricle, worsening mitral regurgitation, regional redistribution of myocardial perfusion and oxygen consumption, and ...
Camm A John AJ Division of Clinical Sciences, St. Georges University of London, Cranmer Terrace, London, SW17 0RE, United Kingdom. - - 2014
The sudden onset of atrial fibrillation (AF) is often associated with rapid irregular palpitations, chest pain, shortness of breath and considerable anxiety. If a patient presents shortly after the onset of the arrhythmia the physician may adopt initially an expectant "wait and see" policy, perhaps with the help of mild ...
Chambers Jeffrey W JW Metropolitan Heart and Vascular Institute, Mercy Hospital, Minneapolis, Minnesota. Electronic address: - - 2014
The ORBIT II (Evaluate the Safety and Efficacy of OAS in Treating Severely Calcified Coronary Lesions) trial evaluated the safety and efficacy of the coronary Orbital Atherectomy System (OAS) to prepare de novo, severely calcified coronary lesions for stent placement. Despite advances in interventional techniques, treatment of calcified coronary lesions ...
Sandeep Nefthi N Division of Pediatric Cardiology, Children's National Health System, Washington, District of Columbia, United States of - - 2014
Coronary sinus atrial septal defects are the rarest defects of the atrial septum comprising <1% of the five different types of atrial septal defects. Despite the widespread adoption of percutaneous device closure of secundum atrial septal defects, the published experience with percutaneous device closure of coronary sinus atrial septal defects ...
Bhatt Parloop P Care Institute of Medical Sciences (CIMS), Ahmedabad 380060, Gujarat, India. Electronic address: - - 2014
The ORBIT I trial evaluated the safety and performance of an orbital atherectomy system (OAS) in treating de novo calcified coronary lesions. Severely calcified coronary arteries pose ongoing treatment challenges. Stent placement in calcified lesions can result in stent under expansion, malapposition and procedural complications. OAS treatment may be recommended ...
Warraich Haider J HJ From the Departments of Medicine, Cardiovascular Division (H.J.W., M.G., W.J.M.) and Radiology (W.J.M.), Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, - - 2014
Thromboembolism in paroxysmal atrial fibrillation (AF) has often been attributed to occult AF. We hypothesized that the surface ECG may not always reflect left atrial appendage (LAA) mechanical function. Transesophageal echocardiographic images from 201 consecutive patients undergoing transesophageal echocardiography by a single operator were reviewed. LAA pulse wave Doppler phenotype, ...
Gonna Hanney H Department of Cardiology, St. George's Hospital, Blackshaw Rd, SW17 0QT, London, - - 2014
A number of therapeutic strategies exist for the restoration and maintenance of sinus rhythm in patients presenting with atrial fibrillation. The acute success rate with electrical cardioversion is high. However, many patients relapse into atrial fibrillation. A major challenge faced by those who care for patients with atrial fibrillation is ...
Fournet Maxime - - 2014
A 38-year-old farmer was hospitalized for fever, chills, cough, and chest pain lasting for 7 days. Due to persistent symptoms, patient was referred to hospital. Blood cultures identified oxacillin-sensitive Staphylococcus aureus (OSSA). Transthoracic echocardiography (TTE) showed large pericardial effusion, a mobile heterogeneous mass originating from the coronary sinus ostium, no ...
Nakano Yusuke Y 1 Department of Pediatric Cardiology, Yokohama City University School of Medicine, - - 2014
We report a case of unroofed coronary sinus not associated with the persistent left superior vena cava. Definite diagnosis of the unroofed coronary sinus was obtained by trans-oesophageal echocardiography, which revealed the unroofed portion with left-to-right shunt. Real-time three-dimensional trans-oesophageal echocardiography could show the whole pictures of the defect, which ...
Bhattacharya Shamik S Tissue Mechanics Laboratory Biomedical Engineering Program and Department of Mechanical Engineering University of Connecticut, Storrs, CT 06269, United - - 2014
The transcatheter mitral valve repair (TMVR) technique utilizes a stent to cinch a segment of the mitral annulus (MA) and reduces mitral regurgitation. The cinching mechanism results in reduction of the septal-lateral distance. However, the mechanism has not been characterized completely. In this study, a method was developed to quantify ...
Liu Xiao-yan - - 2014
The significance of isolated diastolic potentials (IDPs) in patients with idiopathic ventricular arrhythmias (IVAs) arising from right ventricular outflow tract (RVOT) is currently unknown. The objective of this study was to clarify the characteristics of IDPs and its role in guiding ablation in RVOT-IVAs. Twenty-five consecutive patients with RVOT-IVAs and ...
Ciaccio Edward J EJ 1Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, - - 2014
-Improved understanding of the mechanisms underlying infarct border zone (IBZ) electrogram fractionation may be helpful to identify arrhythmogenic regions in the post-infarction heart. We describe the generation of electrogram fractionation from changes in activation wavefront curvature in experimental canine infarction. -A model was developed to estimate the extracellular signal shape ...
Akerström Finn F Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology, Hospital Virgen de la Salud, Toledo, - - 2014
An 80-year-old man with a history of ischemic cardiomyopathy with healed anterior myocardial infarction, severe left ventricular systolic dysfunction, sinus node dysfunction and ventricular tachycardia (VT) received a dual-chamber Medtronic® Maximo® II DR ICD model D284DRG in 2008. This article is protected by copyright. All rights reserved.
Boyle Patrick M PM Institute for Computational Medicine, Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of - - 2014
Organ-scale arrhythmogenic consequences of source-sink mismatch caused by impaired excitability remain unknown, hindering the understanding of pathophysiology in disease states like Brugada syndrome and ischemia. We sought to determine whether sodium current (INa) reduction in the structurally normal heart unmasks a regionally heterogeneous substrate for the induction of sustained arrhythmia ...
Raza Ali A Department of Cardiology, Castle Hill Hospital, East Yorkshire, - - 2014
A 46-year-old man was found to have an abnormal ECG taken during a routine health and blood pressure check. His only symptom was non-specific central chest discomfort, unrelated to exertion. His ECG showed sinus rhythm, a normal axis and poor R wave progression across the chest leads and lateral T ...
Disha Bansal B Department of Radiology and Imaging, Kasturba Medical College, Manipal, Karnataka, - - 2014
The most common venous abnormality of the thorax is persistent left superior vena cava (PLSVC), incidence being less than 0.5%. However, with congenital heart disease, it is about 6.1%. When the coronary sinus is dilated always search for PLSVC. The coronary sinus may communicate with the left atrium. This is known ...
Fadel Bahaa M BM King Faisal Specialist Hospital & Research Center, Riyadh, Saudi - - 2013
Proper interpretation of the spectral Doppler signal and elucidation of the underlying hemodynamics can at times be problematic due to confounding factors, one of them being a rapid heart rate. In this article, we discuss the use of carotid sinus massage (CSM) in the echocardiography laboratory as a maneuver to ...
Kittnar O O Institute of Physiology, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic. - - 2013
Spontaneous depolarization similar to that from the sinus node was documented from the myocardial sleeves of pulmonary veins (PV) after isolation procedures. It was then hypothesized that sinus node-like tissue is present in the PVs of humans. Based on a number of features, the myocardium of myocardial sleeves (MS) is ...
Nazinitsky Allison - - 2013
Transient bradycardia in the critical care setting is frequently caused by hypoxemia or oropharyngeal manipulation. Central lines have been associated with a variety of cardiac arrhythmias, but sinus arrest and asystole have not been previously reported. A 38-year-old woman with multisystem organ failure had several episodes of prolonged sinus arrest, ...
Prom Rathasen - - 2013
To review the thromboembolic risk, pathophysiology associated with the risk, and literature investigating the use of antithrombotics in patients with heart failure with reduced ejection fraction and normal sinus rhythm (HFrEF-NSR). An English language literature search was performed with MEDLINE/PubMed and Embase from January 1950 to October 2013 using the ...
Kachalia Amit - - 2013
Sixty six year old male with history of heart failure was admitted for dysphagia, weight loss. CT scan chest revealed diffuse oesophageal wall thickening. Upper endoscopy, oesophagogram confirmed diagnosis of achalasia. TTE revealed severely reduced biventricular systolic function with LVEF 10%; PASP 75-80 mmHg. Parasternal long views showed dilated coronary ...
Durukan A B - - 2013
Aim: Atrial fibrillation is the most common arrhythmia and complication following coronary bypass surgery. Besides well-known risk factors, inflammatory parameters have gained popularity assessing the risk of postoperative atrial fibrillation. In this study, we aimed to document the relation between neutrophil/lymphocyte ratio and postoperative atrial fibrillation. Methods: Between January 2011 ...
Lim Paul Chun Yih PC Department of Cardiology, National Heart Centre Singapore, Singapore, - - 2013
A 48-year-old male patient underwent cardiac resynchronization therapy defibrillator implantation, and he was found to have atresia of the coronary sinus ostium with venous drainage occurring via a persistent left-sided superior vena cava, which was connected to the right-sided superior vena cava by the innominate vein. This is a rare ...
Siddiqui Adeel M AM Adeel M Siddiqui, Long-Bao Cao, Assad Movahed, Department of Cardiovascular Sciences, East Carolina University, Brody School of Medicine, East Carolina Heart Institute, Greenville, NC 27834, United - - 2013
Persistent left superior vena cava, usually an incidental finding, is the most common thoracic vein anatomical variation draining into the coronary sinus. Central venous catheter procedures may be complicated secondary to the presence of a persistent left superior vena cava, leading to life-threatening complications such as arrhythmias, cardiogenic shock, and ...
Kobayashi Yukari - - 2013
A case of acute myocardial infarction (AMI) due to thrombus in the left coronary cusp to the ascending aorta is described. There was no clinical evidence of coagulopathy, immunodisability, or local erosive lesion of the aortic and sinus of Valsalva wall macroscopically. Secondary polycythemia, induced by heavy smoking, was the ...
El-Said Howaida - - 2013
The patient was a male infant with L-transposition of great arteries (L-TGA), Ebstein's anomaly of the tricuspid valve, subvalvar aortic stenosis, ventricular septal defect (VSD), hypoplastic right ventricle, arch hypoplasia, and congenital complete heart block. He underwent a Norwood procedure, aortic arch repair, permanent pacemaker implantation, and a 3.5-mm aortopulmonary ...
De Pauw Michel - - 2013
Sinus tachycardia due to sympathetic activation may be the ultimate response to support cardiac output. Abrupt heart rate reduction in this condition may be deleterious as is illustrated by two cases. Both patients were referred in cardiogenic shock after inappropriate treatment with a beta-blocking agent, initiated as a symptomatic treatment ...
Hong Man Yong - - 2013
Coronary artery anomalies are rare presentations in primary percutaneous coronary interventions of acute myocardial infarction. Herein, we report the case of a 59-year-old man with acute anterior myocardial infarction who had anomalous separate origin of left anterior descending artery (LAD) and left circumflex artery (LCX) from the left coronary aortic ...
Wu Xiaolin - - 2013
The case of a patient with narrow QRS-complex supraventricular tachycardia and atrial flutter is described. The 12-lead surface electrocardiogram (ECG) revealed sinus rhythm with ventricular pre-excitation and negative δ waves in leads II, III and aVF, indicating Wolff-Parkinson-White syndrome with a posteroseptal accessory pathway (AP). Coronary sinus angiography revealed the ...
Oh Kyungmi - - 2013
Post-stroke atrial fibrillation has been frequently reported especially in the patients with right insular infarct as an evidence of cerebrogenic mechanism affecting on cardiac rhythm. However, conversion to normal sinus rhythm after stroke in patients who had atrial fibrillation has not been reported. A 88-year-old men who had untreated atrial ...
Peng David M - - 2013
The coronary sinus can become obstructed with any instrumentation at or near the ostium such as in atrioventricular canal defect repairs. This complication may lead to a wide range of consequences including dyspnea, angina, myocardial infarction, and sudden death. The following report illustrates the importance of careful perioperative echocardiographic evaluation ...
Takazawa Takanori - - 2013
We describe asymptomatic sinus arrest and post-hiccup cough syncope in a patient with medullary infarction. A 78-year-old woman developed arrhythmia, hiccup, and cough syncope attacks. Neurological examination was not remarkable. Cough syncope occurs after hiccup attacks. Bradycardia and decreased blood pressure were also present after the beginning cough. Holter 24-hour ...
Mittal S R SR Department of Cardiology, St. Francis Hospital, - - 2013
One case of inferior vena cava type sinus venosus defect is reported. It is likely to be missed on transthoracic echocardiography. Transesophageal echocardiography is useful. Unlike superior sinus venosus defect which are easily visible on transesophageal echocardiography, a careful search is needed to detect inferior sinus venosus defects. All patients ...
Shimizu Takahiro - - 2013
BACKGROUND: This study aimed to investigate whether left atrial appendage (LAA) dysfunction evaluated by transesophageal echocardiography (TEE) during sinus rhythm is predictable of paroxysmal atrial fibrillation (PAF) as an embolic source in the acute stage of stroke. METHODS AND RESULTS: We measured and analyzed LAA flow velocity (LAA-FV) and LAA ...
Yoon Ji Hyun - - 2013
BACKGROUND: Paroxysmal atrial fibrillation (PaAF) may present as a single self-terminating episode of atrial fibrillation (AF) or a more persistent form after sinus conversion. We investigated predictors of recurrence in patients with PaAF. HYPOTHESIS: Left atrial function would be an useful parameter for predicting PaAF recurrence. METHODS: The study population ...
Parikh Keyur K Care Institute of Medical Science, The Heart Care Clinic, Ahmedabad, India. - - 2013
The ORBIT I trial evaluated the safety and performance of an orbital atherectomy system (OAS) for the treatment of de novo calcified coronary lesions. Severely calcified coronary arteries pose an ongoing treatment challenge. Stent placement in calcified lesions can result in stent under expansion, malapposition, and procedural complications. OAS treatment ...
Otsuji Ken - - 2013
A 71-year-old man underwent intracoronary stent implantation for acute inferior myocardial infarction (MI). Immediately after diagnostic intravascular ultrasound (IVUS) at 8 months' follow-up, an acute occlusion of the sinus node (SN) artery appeared, which developed sinus arrest with junctional escape rhythm. The serum level of high-sensitivity troponin T (TpT) was ...
El Batti Salma - - 2013
Invasive thymoma is a malignant tumor of the anterior mediastinum that could have intravenous affinity associated with a high recurrence rate. This report highlights the need of coronary sinus exploration when intraatrial thymoma recurrence is diagnosed. Surgical resection of invaded coronary sinus can be achieved safely with a good result.
Kantharia Bharat K - - 2013
A 68-year-old woman with a history of dilated non-ischemic cardiomyopathy presented with syncope. The index ECG showed sinus rhythm with left bundle branch block. On telemetry episodes of sinus rhythm with narrower QRS complexes conduced in 2:1 pattern were noted. Invasive electrophysiological study was performed to determine cause of syncope. Normal conduction ...
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