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Anselme Frédéric - - 2011
Macro-reentrant atrial arrhythmias development is conditioned by the presence of fixed (anatomical or acquired) or functional barriers of conduction with areas of slow conduction at critical atrial sites. It may occur with or without underlying heart disease. Recent development of sophisticated 3D mapping systems has greatly contributed to a better ...
Nair Girish M - - 2011
A patient with D-TGA and surgical repair (Mustard's procedure) presented with appropriate ICD shocks due to monomorphic ventricular tachycardia, refractory to antiarrhythmic medications. The patient underwent an electrophysiological study and catheter ablation for the VT. Substrate and pace mapping techniques, with the help of an electroanatomical mapping system, was used ...
Teh Andrew W - - 2011
Aims Mapping of atrial fibrillation (AF) involves identification of low-voltage regions associated with complex fractionated electrograms (CFE) which theoretically represent abnormal substrate and targets for ablation. Whether low-voltage CFE areas also identify abnormal substrate during paced rhythm is unknown. Methods and results Twelve patients with persistent AF undergoing ablation of ...
Hioki Mika - - 2011
A 47-year-old male with both atrial tachycardia and atrial fibrillation underwent catheter ablation. During the procedure, rapid administration of adenosine triphosphate induced atrial tachycardia. A non-contact mapping system revealed a focal atrial tachycardia originating from the lateral right atrium, which was successfully ablated. Following the ablation of tachycardia, atrial fibrillation ...
Chinushi Masaomi - - 2011
A 35-year-old man, who had an episode of aborted sudden cardiac death due to ventricular fibrillation, suffered from multiple storms of ventricular tachycardia (VT). Conventional cardiac examinations did not reveal any structural heart diseases, and he had been treated by an implantable cardioverter defibrillator since 2007. At the latest admission, ...
Heck Patrick M - - 2011
Focal Atrial Tachycardia in the Post AF Ablation Era. Radiofrequency ablation (RFA) for atrial fibrillation (AF) has become one of the most common catheter ablation procedures performed worldwide. As experience and success in treating patients with paroxysmal AF have increased, more centers are performing ablation for persistent AF. Optimal results may ...
Caillier Bertrand - - 2011
QRS widening and QT prolongation are associated with bupropion. The objectives were to elucidate its cardiac electrophysiological properties. Patch-clamp technique was used to assess the I(Kr) -, I(Ks) -, and I(Na) -blocking effects of bupropion. Langendorff retroperfusion technique on isolated guinea-pig hearts was used to evaluate the MAPD(90) -, MAP ...
Tomita Takeshi - - 2011
We present a patient with non-inducible atrial tachycardia (AT) after atriotomy for surgical repair of heart disease who underwent ablation successfully. Using a 3-D mapping system, we presumed the atriotomy site on the lateral right atrial wall by searching for linear double potentials (DP) during sinus/paced rhythm from the coronary ...
Mönnig Gerold - - 2011
We report a case of postoperative acquired atrioventricular (AV) block and successful ablation of isthmus-dependent atrial flutter using "cryomapping" in combination with a mapping system preserving AV conduction via right infero-septal accessory pathway. (PACE 2011;1-2).
Gyöngyösi Mariann - - 2011
The three-dimensional NOGA(®) (Biologics Delivery Systems, a Johnson & Johnson company, Irwindale, CA, USA) electromechanical mapping system simultaneously registers the electrical and mechanical activities of the left ventricle, enabling online assessment of myocardial viability. The system distinguishes between viable, nonviable, stunned, and hibernating myocardium and can assess wall motion. The ...
Johansen Ida B - - 2011
Cardiac disease is frequently reported in farmed animals, and stress has been implicated as a factor for myocardial dysfunction in commercial fish rearing. Cortisol is a major stress hormone in teleosts, and this hormone has adverse effects on the myocardium. Strains of rainbow trout (Oncorhynchus mykiss) selected for divergent post-stress ...
Yang Lin - - 2011
To investigate cardiac function and myocardial perfusion during 48 h after cardiopulmonary resuscitation (CPR), further to test myocardial stunning and seek indicators for long-term survival after CPR. After 4 min of untreated ventricular fibrillation, fifteen anesthetized pigs were studied at baseline and 2 h, 4 h, 24 h, and 48 ...
Ip James E - - 2011
BACKGROUND:: Dual chamber pacemaker systems can lead to two forms of pacemaker-facilitated tachycardia: pacemaker-mediated tachycardia (PMT) and tracking of sinus or atrial tachycardia. Current pacemaker algorithms cannot always differentiate between these two tachycardias. OBJECTIVE:: The purpose of this study was to investigate a novel algorithm for distinguishing the two mechanisms ...
Margos Panagiotis N - - 2011
A 78-year-old man came for a scheduled check up one month after the implantation of a permanent dualchamber pacemaker for symptomatic transient atrioventricular conduction disturbances (intermittent Mobitz II atrioventricular block). The patient's ECG indicated a loss of atrial capture by the atrial electrode with 1:1 atrioventricular conduction. A subsequent X-ray ...
Kumar Saurabh - - 2011
BACKGROUND: Atrial mechanical stunning is a form of tachycardia mediated atrial cardiomyopathy that manifests after reversion of persistent atrial arrhythmias to sinus rhythm. OBJECTIVES: To examine if chronic omega-3 polyunsaturated fatty acid supplementation with fish oils can reverse atrial mechanical stunning. METHODS: Patients undergoing reversion of persistent atrial fibrillation (AF) ...
Zaher Medhat F - - 2011
Inadvertent malposition of a pacemaker ventricular lead into the left ventricle is an uncommon event, and its actual incidence is probably unknown. It may be underestimated and underreported because of a possible asymptomatic course. A 12-lead electrocardiogram is important to confirm proper placement. We report a case of a 60-year-old ...
Dadkhah Shahriar - - 2011
Ischemic preconditioning (IPC) is a well-documented phenomenon. Short episodes of sublethal ischemia provide cardioprotective effects for subsequent longer duration ischemic events. Although the exact mechanism of IPC is not yet known, the chemical basis of IPC seems to involve preservation of ATP or collateral vascularization recruitment. In this case report, ...
Jia Li - - 2011
RFCA has been established as an effective and curative therapy for severely symptomatic PVC from the outflow tract in structurally normal hearts. However, it is unknown whether PVCs originating from the left ventricular septum, are effectively eliminated by RFCA. This study aimed to investigate electrophysiologic characteristics and effects of radiofrequency ...
Shokrollahi E E Sunnybrook Research Institute, University of Toronto, Toronto, Canada. - - 2011
The arrhythmogenic substrate in patients with prior myocardial infarct (MI) is located at the border zone, BZ. In this study we correlated the BZ identified by two methods: electro-anatomical voltage mapping (EAVM) and a novel MRI method, multi-contrast late enhancement (MCLE). A pre-clinical porcine model with chronic MI was used ...
Jeewa Aamir - - 2010
A case of an infant, following surgical repair for double outlet right ventricle, who developed low cardiac output syndrome and complete heart block that required insertion of a pacemaker is presented. The infant underwent optimization of his ventricular function to determine whether pacing the right ventricle or left ventricle or ...
Chang Tzu-Pu - - 2010
We report a case of a tiny infarct on the left dorsolateral pons in a 50-year-old man who presented with prolonged and isolated vertigo. The clinical features mimic vestibular neuritis and can easily lead to misdiagnosis. Selective involvement of the left superior vestibular nucleus might explain the resemblance to acute ...
Lin Jainn-Jim - - 2010
Neurogenic stunned myocardium is characterized by reversible left ventricular dysfunction, which occurs after severe central nervous system injury in patients without coronary artery disease. It has been described in association with subarachnoid hemorrhage, Guillain-Barré syndrome, and metastatic brain tumors in adults, but has been rarely reported in association with acute ...
Eriksson Monica - - 2010
To describe and interpret couples' thoughts and expectations about their future life after the patient's discharge following acute myocardial infarction. An acute myocardial infarction is a challenge for both the patient and his/her partner, as it can disrupt family functioning and dynamics. Earlier research has generally focused on either the ...
Boruah Pranjal - - 2010
Acute streptococcal myocarditis is an uncommon diagnosis in the developed world. Its presentation masquerading as acute myocardial infarction is still uncommon. We describe a case of a young male presenting with a recent diagnosis of streptococcal pharyngitis followed by a classical presentation of post streptococcal myocarditis. This is an unusual ...
Reuwer A Q - - 2011
Prolactin may contribute to an atherogenic phenotype. Furthermore, previous studies have shown that prolactin levels increase in situations of acute stress and inflammation. We therefore aimed to investigate the relationship between prolactin, acute stress and inflammation in patients with myocardial infarction. We performed a case-control study in 40 patients with ...
Malbora Baris - - 2010
Cardiac complications of the pediatric patients with acute leukemia are common. Most of the cardiac complications may be due to chemotherapeutics such as antracyclins, besides anemia, infections, or direct leukemic infiltrations of the heart. It is reported that leukemic infiltration is frequent in the postmortem examination of the myocardium and ...
Siniorakis Eftychios - - 2010
Two patients with acute myocardial infarction were admitted with unremarkable electrocardiograms, which did not reveal the location of the damage. A review of these electrocardiograms led to a suspicion of the presence of Brugada sign (BRSG), something subsequently confirmed by the administration of a sodium channel blocker. The unmasking of ...
Yang Ya-Ling - - 2010
BACKGROUND: Omental infarction is a rare occurrence in children. It is often diagnosed during surgery for suspected appendicitis. This study investigated the use of clinical and laboratory data for distinguishing between omental infarction and acute appendicitis. METHODS: Seven patients with surgically and pathologically proven omental infarction and 28 age- and ...
Kim Hyun-Ah - - 2010
BACKGROUND AND PURPOSE: Although several articles have been published on central vestibular syndrome mimicking acute peripheral vestibulopathy (ie, pseudo-acute peripheral vestibulopathy), there are no reports of a brainstem infarct that selectively involves the vestibular nucleus and causes isolated vertigo. SUMMARY OF CASE: We report a patient with an isolated vestibular ...
Yu Jeong Jin - - 2010
This study aimed to investigate left ventricular myocardial deformation in children with Kawasaki disease during the acute phase of their illness. A total of 50 patients and 35 normal control subjects were assessed. Data were obtained from the patients during the acute and convalescent phases of Kawasaki disease. Analyses of ...
Winchester David E - - 2010
Doxorubicin and anthracycline antineoplastic agents are well known for their myocardial toxicity. This effect, however, is thought to be a direct one on the myocardium as a result of free radical formation and oxidative stress. We present the case of a patient who suffered an acute myocardial infarction during her ...
Cheng Hsien-Hung - - 2010
Killip classification is a valuable prognostic stratification for patients with acute myocardial infarction. Patients with high initial glucose levels also have adverse outcomes. We hypothesize that an increase in the Killip classification rank of patients with acute myocardial infarction might be associated with increase in initial glucose levels. In a ...
Lopes Juliana de Lima Jde - - 2010
This study compared the levels of anxiety presented by patients with acute myocardial infarction in bed and shower baths and the influence of antecedent variables: age, gender, medications, previous hospitalization and/or bed bath, patients' preference regarding the professional's gender, risk factors and anxiety-traits. This crossover study was conducted between February ...
Ventham Nicholas - - 2010
Omental infarction is a rare cause of acute abdomen in childhood. We describe a case of omental infarction mimicking acute appendicitis occurring in a child with cyclical neutropenia. Neutropenic enterocolitis, a serious cause of the acute abdomen, has been linked with cyclical neutropenia. In neutropenic patients, omental infarction when diagnosed ...
Lai Yi-Liang - - 2010
Transarterial chemoembolization has been widely used to treat unresectable hepatocellular carcinoma. Various complications have been reported, but they have not included acute myocardial infarction. Acute myocardial infarction results mainly from coronary artery occlusion by plaques that are vulnerable to rupture or from coronary spasm, embolization, or dissection of the coronary ...
Corrales-Medina Vicente F VF Division of Infectious Diseases, Department of Medicine, University of Ottawa, ON, - - 2010
Acute coronary syndromes are a leading cause of morbidity and mortality worldwide. The mechanisms underlying the triggering of these events are diverse and include increased coronary and systemic inflammatory activity, dominant prothrombotic conditions, increased biomechanical stress on coronary arteries, variations in the coronary arterial tone, disturbed haemodynamic homoeostasis, and altered ...
Fornasini Marco M College of Health Sciences, Universidad San Francisco de Quito, Quito, - - 2010
Guidelines for the management of patients with acute myocardial infarction recommend the routine use of 4 effective cardiac medications: angiotensin-converting enzyme inhibitors, aspirin, beta-blockers, and lipid-lowering agents. Limited data are available, however, about the contemporary and changing use of these therapies, particularly from a population-based perspective. The study describes differences ...
Kirschner Robert - - 2010
Standard extracellular cardiovascular magnetic resonance (CMR) contrast agents (CA) do not provide differentiation between acute and older myocardial infarcts (MI). The purpose of this study was to develop a method for differentiation between acute and older myocardial infarct using myocardial late-enhancement (LE) CMR by a new, low molecular weight contrast ...
Titelbaum David S - - 2010
A case of MR imaging-documented transient unilateral tongue denervation presenting during acute internal capsule infarction is described. Understanding the corticolingual pathway innervation of the hypoglossal nucleus is essential for explaining these findings. Awareness of the findings in this case will facilitate appropriate diagnosis, provide neuroanatomic explanation, and prevent misdiagnosis.
Hwang Chun - - 2009
The ligament of Marshall (LOM) is located on the epicardium between the left atrial appendage and the left pulmonary veins. The corresponding endocardial structure is the left lateral ridge. LOM is a source of paroxysmal AF, and may activate at fast rates during persistent AF. Because of the importance of ...
May Annette M - - 2010
Isolated infarctions of the subepicardial myocardium without changes in subendocardium are extremely rare. We present an autoptic case with an acute subepicardial infarction of the right- and left-ventricular myocardium. A 53-year-old male was admitted to hospital with acute upper abdominal pain. Clinical examination revealed an acute infero-lateral myocardial infarction. The ...
Geerse Dani??l A - - 2009
BACKGROUND: The Selvester QRS score was developed as a method to estimate infarct size (IS) using the ECG and has been validated during the prereperfusion era. Few comparisons exist with contrast-enhanced magnetic resonance imaging (ceMRI) in reperfused patients. This study evaluates the ability of the Selvester QRS score to estimate ...
Kajander Olli A - - 2009
Pulmonary arteriovenous malformations are rare, mostly asymptomatic vascular anomalies. These malformations cause direct right to left shunting of unoxygenated blood, resulting chronically in cyanosis, dyspnea, and exercise intolerance. The serious complications reported earlier have mainly been neurologic, for example, cerebrovascular accidents and brain abscesses and are most likely caused by ...
Sung Chong Won - - 2009
Prostaglandin E (PGE) is the preferred agent for second-trimester pregnancy termination. Hypotension, bradycardia, ventricular arrhythmias, myocardial infarction, cardiac arrest and death associated with PGE have been reported. A case of acute myocardial infarction due to coronary vasospasm induced by PGE is described in the present report. The diagnosis was confirmed ...
Kang Dong Goo - - 2009
The incidence of ischemic heart disease has been increased rapidly in Korea. However, the clinical effects of antecedent hypertension on acute myocardial infarction have not been identified. We assessed the relationship between antecedent hypertension and clinical outcomes in 7,784 patients with acute myocardial infarction in the Korea Acute Myocardial Infarction ...
Peterson Eric D - - 2009
BACKGROUND: There is a recognized need for a national unified registry to track presenting features, care, and outcomes for patients with acute myocardial infarction. To address this need, the American Heart Association's Get With the Guidelines-Coronary Artery Disease program joined the Acute Coronary Treatment and Intervention Outcomes Network (ACTION) Registry ...
Sankaranarayanan Rajiv - - 2009
We present a case of primary cardiac lymphoma (PCL) that masqueraded as acute myocardial infarction with typical symptoms, electrocardiogram (ECG) changes, and raised troponin T levels. This case throws light on a rare cardiac tumor with varied presentation, underlining the need for a high index of suspicion.
Manrique Alain - - 2009
Cardiac magnetic resonance can detect myocardial oedema using myocardial transverse relaxation time (T2)-weighted sequences but quantitative data are lacking in patients evaluated early after acute myocardial infarction. To assess the spatial distribution of T2 in patients with recent acute myocardial infarction. Twenty-four consecutive patients (mean age 60+/-11 years) with acute ...
Nielsen Lene Hüche - - 2009
INTRODUCTION: Sparse information with regard to the electrocardiographic (ECG) changes in Takotsubo cardiomyopathy (TC) is available. The purpose of this study was to describe the clinical characteristics and electrocardiographic changes in a Danish cohort of patients with TC. We discuss the potential pathophysiological mechanisms of TC. METHODS: Cases were registered ...
Chioncel V - - 2009
The diabetic patients represent a population with a high risk of morbidity and mortality because of vascular complications. Out of them, all the patients with acute ST-elevation myocardial infarction have a more reserved prognostic than those without diabetes mellitus. Moreover, the patients with impaired glucose tolerance have a more severe ...
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