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    35480 results match your criteria Ventricular Tachycardia

    1 OF 710

    Effects of Na+ channel blockers on the restitution of refractory period, conduction time, and excitation wavelength in perfused guinea-pig heart.
    PLoS One 2017 23;12(2):e0172683. Epub 2017 Feb 23.
    Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.
    Na+ channel blockers flecainide and quinidine can increase propensity to ventricular tachyarrhythmia, whereas lidocaine and mexiletine are recognized as safe antiarrhythmics. Clinically, ventricular fibrillation is often precipitated by transient tachycardia that reduces action potential duration, suggesting that a critical shortening of the excitation wavelength (EW) may contribute to the arrhythmic substrate. This study examined whether different INa blockers can produce contrasting effects on the rate adaptation of the EW, which would explain the difference in their safety profile. Read More

    Acquired prolongation of QT interval as a risk factor for torsade de pointes ventricular tachycardia: a narrative review for the anesthesiologist and intensivist.
    J Anesth 2017 Feb 22. Epub 2017 Feb 22.
    Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, Novi Sad, 21000, Serbia.
    More than 70% of intensive care unit (ICU) patients experience heart rhythm disturbances, and these patients have correspondingly higher mortality rates. Consequently, one of the standards of care in ICUs is continuous electrocardiography monitoring. One of the potentially preventable dysrhythmic events is the occurrence of torsade de pointes ventricular tachycardia in the setting of acquired prolonged QT interval. Read More

    Double ventricular response in dual AV nodal pathways mimicking interpolated premature beat.
    Herz 2017 Feb 22. Epub 2017 Feb 22.
    Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
    Double ventricular response in dual atrioventricular (AV) nodal pathways can result in nonreentrant supraventricular tachycardia. Since this condition was first described in 1979, around 20 cases have been reported. Here, we present the case of a patient with a confirmed diagnosis of double ventricular response in dual AV nodal pathways resembling an interpolated premature beat who underwent successful radiofrequency ablation of the slow pathway. Read More

    [Catheter ablation of ventricular tachycardia : What have we achieved?]
    Herz 2017 Feb 22. Epub 2017 Feb 22.
    Zentrum für Kardiologie, Klinik für Kardiologie 2/Rhythmologie, Universitätsmedizin Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland.
    The role of catheter ablation in patients with ventricular tachycardia (VT) has evolved over the last two decades into an established treatment option. In patients with idiopathic VT catheter ablation is the gold standard treatment option with high effectiveness and low risk of complications. Due to the high risk of side effects the use of antiarrhythmic drugs is only indicated in exceptional cases. Read More

    Patient-specific detection of ventricular tachycardia in remote continuous health devices.
    Conf Proc IEEE Eng Med Biol Soc 2016 Aug;2016:529-532
    Ventricular Tachycardia (VT) is a dangerous arrhythmic event which can lead to sudden cardiac death if not detected and taken care of in time. This work uses non-linear features derived from Recurrence Quantification Analysis (RQA) along with Kolmogorov complexity, by analyzing the ECG signals, to train a classifier which can predict VT prior to their onset in remote continuous health devices. Compressed ECG signal along with amplitude ranges extracted from the ECG signal are used as features to strengthen the classifier. Read More

    Ventricular arrhythmias and sudden death in tetralogy of Fallot.
    Arch Cardiovasc Dis 2017 Feb 17. Epub 2017 Feb 17.
    University Children Hospital, Toulouse, France; Marie-Lannelongue Hospital, Department of Congenital Heart Diseases, Le Plessis-Robinson, France.
    Malignant ventricular arrhythmias and sudden cardiac death may late happen in repaired tetralogy of Fallot, although probably less frequently than previously thought, especially with the advent of new surgical techniques/management. Ventricular tachycardias are caused by reentry around the surgical scars/patches and valves. Many predictive factors have been proposed, which suffer from poor accuracy. Read More

    Targeted temperature management after intraoperative cardiac arrest: a multicenter retrospective study.
    Intensive Care Med 2017 Feb 20. Epub 2017 Feb 20.
    Medical-Surgical Intensive Care Unit, Intensive Care Department, Centre Hospitalier de Versailles-Site André Mignot, 177 rue de Versailles, 78150, Le Chesnay Cedex, France.
    Purpose: Few outcome data are available about temperature management after intraoperative cardiac arrest (IOCA). We describe targeted temperature management (TTM) (32-34 °C) modalities, adverse events, and association with 1-year functional outcome in patients with IOCA.

    Methods: Patients admitted to 11 ICUs after IOCA in 2008-2013 were studied retrospectively. Read More

    SK4 K(+) channels are therapeutic targets for the treatment of cardiac arrhythmias.
    EMBO Mol Med 2017 Feb 20. Epub 2017 Feb 20.
    Department of Physiology and Pharmacology, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
    Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a stress-provoked ventricular arrhythmia, which also manifests sinoatrial node (SAN) dysfunction. We recently showed that SK4 calcium-activated potassium channels are important for automaticity of cardiomyocytes derived from human embryonic stem cells. Here SK4 channels were identified in human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from healthy and CPVT2 patients bearing a mutation in calsequestrin 2 (CASQ2-D307H) and in SAN cells from WT and CASQ2-D307H knock-in (KI) mice. Read More

    A congenital diverticulum of the left ventricular apex manifested by stroke and recurrent ventricular tachycardia.
    Cardiovasc Pathol 2017 Feb 4;28:3-6. Epub 2017 Feb 4.
    2nd Department of Medicine - Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague.
    Ventricular outpouchings include acquired abnormalities (aneurysms and pseudoaneurysms) and congenital ventricular diverticula (CVD). CVD represent rare cardiac pathologies. Although CVD is often associated with other cardiac and extracardiac congenital anomalies, it can also be incidentally observed in otherwise healthy subjects. Read More

    Epicardial Implantable Cardioverter-Defibrillator in a 2-Month-Old Infant.
    Ann Thorac Surg 2017 Mar;103(3):e263-e265
    Department of Cardiovascular Surgery, Kitasato University School of Medicine, Sagamihara, Japan.
    We describe the implantation of an implantable cardioverter defibrillator (ICD) in a 2-month-old infant with frequent sustained ventricular tachycardia (VT) refractory to antiarrhythmic agents. An epicardial ICD shock coil lead and pacing leads were placed, as was a cumbersome device console that was stored in a pocket between the left external and internal oblique muscles. These methods were safe and feasible even for such a small infant, and possible adverse events were avoided. Read More

    Atrial Entrainment During Posterior Fascicular Ventricular Tachycardia.
    J Cardiovasc Electrophysiol 2017 Feb 20. Epub 2017 Feb 20.
    Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India, 695011.
    A 20-year-old gentleman underwent electrophysiology study for paroxysmal palpitation. The surface electrocardiogram during sinus rhythm did not show any preexcitation. Echocardiogram was normal. Read More

    Bidirectional ventricular tachycardia in cardiac sarcoidosis.
    J Arrhythm 2017 Feb 4;33(1):69-72. Epub 2016 Jun 4.
    Department of Internal Medicine (Division of Cardiology), University of Wisconsin Hospital and Clinics, 600 Highland Ave, Madison, WI 53713, United States.
    A 73-year-old man with history of pulmonary sarcoidosis was found to have runs of non-sustained bidirectional ventricular tachycardia (BVT) with two different QRS morphologies on a Holter monitor. Cardiac magnetic resonance delayed gadolinium imaging revealed a region of patchy mid-myocardial enhancement within the left ventricular basal inferolateral myocardium. An 18-fluorodeoxyglucose positron emission tomography (FDG-PET) showed increased uptake in the same area, consistent with active sarcoid, with no septal involvement. Read More

    Successful percutaneous epicardial catheter ablation of ventricular tachycardia arising from the crux of the heart in a patient with prior coronary artery bypass grafting.
    J Arrhythm 2017 Feb 1;33(1):66-68. Epub 2016 Jun 1.
    Division of Cardiovascular Disease, University of Alabama at Birmingham, FOT 930A, 510 20th Street South, 1530 3rd AVE S, Birmingham, AL 35294-0019, USA.
    A 63-year-old man with a history of remote inferior myocardial infarction and coronary artery bypass grafting (CABG) underwent catheter ablation of ventricular tachycardia (VT). Epicardial catheter ablation of the VT was successful at the crux of the heart despite limited mapping within the pericardial space due to pericardial adhesion. Percutaneous subxiphoidal pericardial approach is usually impossible in patients with a history of open heart surgery due to pericardial adhesions. Read More

    Mortality and predictors of appropriate implantable cardioverter defibrillator therapy in Japanese patients with Multicenter Automatic Defibrillator Implantation Trial II criteria.
    J Arrhythm 2017 Feb 28;33(1):17-22. Epub 2016 Jun 28.
    Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan.
    Background: Data regarding long-term mortality and factors influencing appropriate therapies in Japanese patients with implantable cardioverter defibrillators (ICD), who satisfy the Multicenter Automatic Defibrillator Implantation Trial II (MADIT II) criteria for primary prevention, remain scarce.

    Methods: A total of 118 consecutive patients who underwent ICD implantation without any prior ventricular arrhythmic event, from January 2000 to December 2012, were enrolled based on the MADIT II criteria: left ventricular ejection fraction (LVEF) of ≤30% with ischemic heart disease and at least 4 weeks after a myocardial infarction. We investigated the mortality and factors influencing appropriate ICD therapies in this population. Read More

    Ultrasound-guided probe-generated artifacts stimulating ventricular tachycardia: A rare phenomenon.
    Saudi J Anaesth 2017 Jan-Mar;11(1):93-95
    Department of Neuroanaesthesiology, All India Institute of Medical Sciences, New Delhi, India.
    Electrocardiographic (ECG) artifacts may arise due to interference, faulty earthing, and current leakages in biomedical equipment which might create clinical dilemmas in the perioperative settings. Piezoelectric signals generated by ultrasonography probe are another uncommon source which might be sensed by the ECG electrodes and produce tracings similar to pathological arrhythmias triggering false alarms and avoidable therapies. Anesthesiologists should be familiar with these uncommon sources which might produce these artifacts and they should be identified swiftly. Read More

    Cardiac Phenotype and Long Term Prognosis of Arrhythmogenic Right Ventricular Cardiomyopathy/Dysplasia Patients with Late Presentation.
    Heart Rhythm 2017 Feb 12. Epub 2017 Feb 12.
    Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD. Electronic address:
    Background: The clinical profile of Arrhythmogenic Right Ventricular Cardiomyopathy/ Dysplasia patients with late presentation (ARVC/D) is unknown.

    Objective: To characterize the genotype, cardiac phenotype and long term outcomes of ARVC/D patients with late presentation (age≥ 50 years at diagnosis) METHODS: 502 patients with ARVC/D diagnosis from Johns Hopkins and Utrecht registries were studied and long term clinical outcomes ascertained.

    Results: Late presentation was seen in 104 (21%) patients (38% PKP2 carriers) with 3% ≥ 65 years at diagnosis. Read More

    Cardiac computational modeling of ventricular tachycardia and cardiac resynchronization therapy: a clinical perspective.
    Minerva Cardioangiol 2017 Feb 17. Epub 2017 Feb 17.
    Division of Imaging Science and Biomedical Engineering, Kings College London, London, UK.
    Computational modeling has contributed to the understanding of the normal cardiac electrophysiology and the mechanisms underlying arrhythmogenesis and arrhythmia maintenance. Our improved understanding of cardiac physiology and access to faster computational power have allowed us to integrate many layers of biological systems, gain further insight into the mechanism of cardiac pathology and moved from small scale molecular and cellular models to integrated 3-dimensional models representing the anatomy, electrophysiology and hemodynamic parameters on a organ scale. The ultimate goal of cardiac modeling is to create personalized patient-specific models that would allow clinicians to better understand the disease pathology, aid diagnosis and plan treatment strategy on a case-by-case basis. Read More

    Cardiac arrhythmias in adolescents with mitral valve prolapse and myxomatous degeneration of mitral valve leaflets.
    Wiad Lek 2016 ;69(6):730-733
    Department Of Clinical Pharmacology Of Kharkiv National Medical University, Kharkiv, Ukraine.
    Introduction: myxomatous degeneration (MD) of valve leaflets and other structures of the valve apparatus and the degree of its severity in particular is of great prognostic significance as this determines the risk of complications development as well as the prognosis. The aim of the paper was to assess heart rhythm and heart conduction disorders in adolescents with primary mitral valve prolapse (MVP) and myxomatous valve degeneration of various degrees.

    Materials And Methods: complete physical examination of 145 adolescents aged 12-16 with MVP was carried out. Read More

    Associations among left ventricular systolic function, tachycardia, and cardiac preload in septic patients.
    Ann Intensive Care 2017 Dec 17;7(1):17. Epub 2017 Feb 17.
    Critical Care Echocardiography Service, Intermountain Medical Center, 5121 S Cottonwood St, Murray, UT, 84157, USA.
    Background: In sepsis, tachycardia may indicate low preload, adrenergic stimulation, or both. Adrenergic overstimulation is associated with septic cardiomyopathy. We sought to determine whether tachycardia was associated with left ventricular longitudinal strain, a measure of cardiac dysfunction. Read More

    Adjunctive Interventional Techniques When Percutaneous Catheter Ablation for Drug Refractory Ventricular Arrhythmias Fail: A Contemporary Review.
    Circ Arrhythm Electrophysiol 2017 Feb;10(2):e003676
    From the Cardiovascular Division, Brigham and Women's Hospital, Boston, MA (S.K., U.B.T., W.G.S.); and Department of Cardiology, Westmead Hospital, University of Sydney, NSW, Australia (S.K.).

    [Correlation of heart rate variability with SYNTAX II on chronic angina].
    Rev Med Inst Mex Seguro Soc 2017 ;55 Suppl 1:S107-S111
    Servicio de Cardiología, Hospital General de Zona 2, Instituto Mexicano del Seguro Social, Irapuato, Guanajuato, México.
    Background: The heart rate variability (HRV) is a prognostic value of cardiovascular risk. It is unknown the correlation between HRV and coronary severity on patients with chronic angina. The objective was to determine the correlation between HRV and the SYNTAX II score in chronic angina. Read More

    An Unusual Short RP Tachycardia: What is the Mechanism?
    J Cardiovasc Electrophysiol 2017 Feb 17. Epub 2017 Feb 17.
    Cardiovascular Interventionalists of Central Jersey, East Brunswick, NJ, USA.
    A 68-year-old man with a history of a structurally normal heart by echocardiography, an unsuccessful ablation of a narrow complex tachycardia and frequent symptoms of palpitations presents for an electrophysiology study and ablation. Baseline 12-lead EKG demonstrated sinus rhythm without ventricular preexcitation. This article is protected by copyright. Read More

    Clozapine-induced hypersensitivity myocarditis presenting as sudden cardiac death.
    Autops Case Rep 2016 Oct-Dec;6(4):9-13. Epub 2016 Dec 30.
    Division of Cardiovascular Medicine - Department of Medicine - University of Missouri School of Medicine, Columbia/MO, USA .
    Hypersensitivity myocarditis is a rare but serious adverse effect of clozapine, a commonly used psychiatric drug. We report the case of sudden cardiac death from clozapine-induced hypersensitivity myocarditis diagnosed at autopsy. A 54-year-old Caucasian male on clozapine therapy for bipolar disorder presented with a sudden onset of shortness of breath. Read More

    Pharmacologic cardioversion with intravenous amiodarone is likely safe in neurocritically Ill patients.
    J Clin Neurosci 2017 Feb 13. Epub 2017 Feb 13.
    Departments of Neurology and Neurocritical Care, Cedars-Sinai Medical Center, 127 S. San Vicente Blvd, Suite A6600, Los Angeles, CA 90048, United States. Electronic address:
    Neurological injury is often associated with cardiac abnormalities, including electrophysiological issues. Cardioversion of acute atrial fibrillation (<48h' duration) without anticoagulation carries about a 0.7% risk of thromboembolism. Read More

    Hypertrophic Cardiomyopathy With Left Ventricular Apical Aneurysm: Implications for Risk Stratification and Management.
    J Am Coll Cardiol 2017 Feb;69(7):761-773
    Hypertrophic Cardiomyopathy Institute, Division of Cardiology, Tufts Medical Center, Boston, Massachusetts. Electronic address:
    Background: A previously under-recognized subset of hypertrophic cardiomyopathy (HCM) patients with left ventricular (LV) apical aneurysms is being identified with increasing frequency. However, risks associated with this subgroup are unknown.

    Objectives: The authors aimed to clarify clinical course and prognosis of a large cohort of HCM patients with LV apical aneurysms over long-term follow-up. Read More

    Clinical Profile of Cardiac Arrhythmias in Children Attending the Out Patient Department of a Tertiary Paediatric Care Centre in Chennai.
    J Clin Diagn Res 2016 Dec 1;10(12):SC06-SC08. Epub 2016 Dec 1.
    Director, Department of Pediatrics, Mehta Hospitals , Nungamabakkam, Chennai, Tamil Nadu, India .
    Introduction: The presentation of symptoms of paediatric arrhythmias vary depending on the age and underlying heart disease. Physical examination of children with important arrhythmias may be entirely normal.

    Aim: Aim is to study the characteristics of cardiac arrhythmias in paediatric patients in a tertiary paediatric care centre in Chennai, India. Read More

    Ventricular Tachycardia Originating from Moderator Band: New Perspective on Catheter Ablation.
    Case Rep Cardiol 2017 18;2017:3414360. Epub 2017 Jan 18.
    Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China.
    A 59-year-old woman was referred to the institution with burdens of idiopathic ventricular tachycardia (IVT). Electroanatomic mapping revealed a complex fractionated, high frequency potential with long duration preceding the QRS onset of the IVT. The real end point of ablation was the disappearance of the conduction block of Purkinje potential during the sinus rhythm besides the disappearance of the inducible tachycardia. Read More

    Renal sympathetic stimulation and ablation affect ventricular arrhythmia by modulating autonomic activity in a cesium-induced long QT canine model.
    Heart Rhythm 2017 Feb 10. Epub 2017 Feb 10.
    Department of Cardiology, Renmin Hospital of Wuhan University; Cardiovascular Research Institute, Wuhan University; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China. Electronic address:
    Background: Our previous studies have shown that renal sympathetic stimulation (RS) may facilitate ischemic ventricular arrhythmia (VA) by increasing left stellate ganglion (LSG) nerve activity, while renal sympathetic ablation (RA) may suppress VA.

    Objective: This study aimed to investigate whether renal sympathetic interventions could also affect VA by modulating LSG activity in a cesium-induced long QT canine model.

    Methods: Twenty-four dogs were randomly divided into RS group (n=8), RA group (n=8), and control group (n=8). Read More

    The role of catheter ablation in the management of patients with implantable cardioverter defibrillator presenting with electrical storm.
    Hellenic J Cardiol 2017 Feb 8. Epub 2017 Feb 8.
    First Cardiology department, AHEPA University hospital, Aristotle University Medical School, Thessaloniki, Greece.
    Background: Electrical storm (ES) is not uncommon among patients with an implantable cardioverter defibrillator (ICD) in situ. Catheter ablation (CA) may suppress the arrhythmia in the acute setting and prevent ES recurrence.

    Methods: Nineteen consecutive patients with an ICD in situ presenting with ES underwent electrophysiologic study followed by CA. Read More

    Junctional ectopic tachycardia in late period after early postoperative complete atrioventricular block: Messenger of return to normal sinus rhythm? : Explanation with four case series.
    J Electrocardiol 2017 Feb 1. Epub 2017 Feb 1.
    Department of Pediatric Cardiology, İstanbul Mehmet Akif Ersoy, Thoracic and Cardiovascular Surgery Center and Research Hospital, Istanbul, Turkey.
    Junctional ectopic tachycardia(JET) is a rare childhood arrhythmia originating from the area adjacent to the atrioventricular(AV) node. It often occurs after surgical procedures like repair of Tetralogy of Fallot, atrioventricular septal defect and ventricular septal defect, which are all performed in that area. While AV block (AVB) can occur after JET, it is very rare for late JET occurring after early postoperative AVB to be followed by normal sinus rhythm (NSR). Read More

    Idiopathic epicardial ventricular tachycardia from the coronary venous system: From electrocardiographic recognition to appropriate therapy.
    Ann Noninvasive Electrocardiol 2017 Feb 11. Epub 2017 Feb 11.
    Department of Cardiovascular Medicine, Department of Electrophysiology, Lille University Hospital, Lille, France.
    Idiopathic epicardial ventricular tachycardias (VTs) account for 9% of idiopathic VTs. The recognition of this entity is important, as a minimally invasive ablation procedure performed exclusively through the coronary sinus branches may be considered, avoiding the potential risks associated with access to the left ventricular endocardium, the aortic root, and the pericardial space. The electrocardiographic features and therapeutic management of this rare form of tachycardia are discussed. Read More

    Using Simulation-Based Learning to Prepare for a Potential Cardiac Emergency on the Labor Unit.
    Nurs Womens Health 2017 Feb - Mar;21(1):20-27
    Cardiac arrest on the labor unit is a rare event, but it can have significant effects on a woman and her fetus, as well as on the clinicians providing health care. Our labor team was challenged to provide care for a woman with a rare cardiac condition that can cause a wide range of events, from fainting to cardiac arrest. This article describes our use of simulation-based learning to prepare for potential scenarios. Read More

    Outcomes of ventricular tachycardia ablation in patients with structural heart disease: The impact of electrical storm.
    PLoS One 2017 10;12(2):e0171830. Epub 2017 Feb 10.
    Department of Cardiology, Institute for Clinical and Experimental Medicine - IKEM, Prague, Czech Republic.
    Aims: To investigate predictors of long-term outcomes after catheter ablation (CA) for ventricular tachycardia (VT) and the impact of electrical storm (ES) prior to index ablation procedures.

    Methods: We studied consecutive patients with structural heart disease and VT (n = 328; age: 63±12 years; 88% males; 72% ischaemic cardiomyopathy; LVEF: 32±12%) who had undergone CA. According to presenting arrhythmia at baseline, they were divided into ES (n = 93, 28%) and non-ES groups. Read More

    Catheter Ablation of Ventricular Tachycardia in Patients with MitraClip Device: Preliminary Findings.
    J Cardiovasc Electrophysiol 2017 Feb 10. Epub 2017 Feb 10.
    Arrhythmia Unit and Electrophysiology Laboratories, San Raffaele University Hospital, Milan, Italy.
    Introduction: Patients with mitral regurgitation are increasingly treated by percutaneous implantation of a MitraClip device. We investigate the feasibility and safety of the transmitral catheter route for catheter ablation of VT (ventricular tachycardia) in these patients.

    Methods: The mitral valve with the MitraClip in situ was crossed under transesophageal three-dimensional echocardiographic and fluoroscopic guidance using a steerable sheath for ablation of the left ventricle. Read More

    Severe Proarrhythmic Potential of the Antiemetic Agents Ondansetron and Domperidone.
    Cardiovasc Toxicol 2017 Feb 9. Epub 2017 Feb 9.
    Division of Electrophysiology, Department of Cardiovascular Medicine, University of Münster, Münster, Germany.
    The potential of ondansetron and domperidone, both clinically established antiemetic agents, to increase the QT-interval has been described in several case reports. Therefore, the aim of the present study was to investigate whether these drugs may provoke polymorphic ventricular tachycardia in a sensitive experimental model of drug-induced proarrhythmia. In 10 female rabbits, ondansetron (1, 5 and 10 µM, n = 10) or domperidone (0. Read More

    Perioperative management of left ventricular diastolic dysfunction and heart failure: an anesthesiologist's perspective.
    Korean J Anesthesiol 2017 Feb 26;70(1):3-12. Epub 2017 Jan 26.
    Department of Anesthesiology and Pain Medicine, School of Medicine, Catholic University of Daegu, Daegu, Korea.
    Anesthesiologists frequently see asymptomatic patients with diastolic dysfunction or heart failure for various surgeries. These patients typically show normal systolic function but abnormal diastolic parameters in their preoperative echocardiographic evaluations. The symptoms that are sometimes seen are similar to those of chronic obstructive pulmonary disease. Read More

    Incidence of Idiopathic Ventricular Arrhythmias: A Population-Based Study.
    Circ Arrhythm Electrophysiol 2017 Feb;10(2)
    From the Departments of Cardiovascular Diseases (S.S., A.M.K., D.P., P.A.B., S.K., P.A.N., D.L.P., T.M.M., B.J.G., C.J.M., W.-K.S., Y.-M.C., S.J.A., P.A.F., S.K.M.), Health Sciences Research (A.M.C.), and Pediatric and Adolescent Cardiology (S.J.A.), Mayo Clinic, Rochester, MN; and Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL (D.O.H.).
    Background: Ventricular tachycardia and premature ventricular complexes (PVCs) most frequently occur in the context of structural heart disease. However, the burden of idiopathic ventricular arrhythmias (IVA) in the general population is unknown.

    Methods And Results: We identified incident cases of IVA between 2005 and 2013 from Olmsted County, Minnesota, using the Rochester Epidemiology Project database. Read More

    Cervical sympathetic blockade for the management of electrical storm.
    J Clin Anesth 2017 Feb 18;36:47-50. Epub 2016 Nov 18.
    Icahn School of Medicine at Mount Sinai Department of Anesthesiology/Division of Pain Medicine, New York, NY.
    A 75-year-old man presented with dizziness and fatigue secondary to ventricular and supraventricular arrhythmias. He underwent an elective ablation but continued to suffer from ventricular tachycardia with cardiovascular instability despite antiarrhythmic therapy with multiple agents. The patient continued to develop episodes of ventricular tachycardia and an episode of ventricular fibrillation. Read More

    Concomitant Right Ventricular Outflow Tract Cryoablation during Pulmonary Valve Replacement in a Patient with Tetralogy of Fallot.
    Korean J Thorac Cardiovasc Surg 2017 Feb 5;50(1):41-43. Epub 2017 Feb 5.
    Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine.
    A 38-year-old female patient with a history of tetralogy of Fallot repair at 10 years of age underwent pulmonary valve replacement with a mechanical prosthesis, tricuspid annuloplasty, and right ventricular outflow tract cryoablation due to pulmonary regurgitation, tricuspid regurgitation, and multiple premature ventricular contractions with sustained ventricular tachycardia. After surgery, she had an uneventful postoperative course with arrhythmia monitoring. She was discharged without incident, and a follow-up Holter examination showed a decrease in the number of ventricular ectopic beats from 702 to 41. Read More

    Hyperthyroidism with dome-and-dart T wave: A case report: A care-compliant article.
    Medicine (Baltimore) 2017 Feb;96(6):e6060
    aGannan Medical University, Ganzhou bDepartment of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou cDepartment of Physiology, School of Basic Medical Sciences, Gannan Medical University dDepartment of Cardiology, Ganzhou Cardiology Center, Society for Cardiovascular Internal Medicine, Emergency Medicine, the First Affiliated Hospital of Gannan Medical University, Ganzhou, China.
    Rationale: Dome-and-dart T waves (or bifid T waves) are a rare phenomenon in the surface electrocardiogram. These wave forms are mainly observed in patients with congenital heart disease such as atrial septal defect and ventricular septal defect. And hyperthyroidism who presented with an electrocardiogram that had dome-and-dart T waves in a precordial lead is never been reported. Read More

    Is there a role of iNOS activation in the delayed antiarrhythmic effect of sodium nitrite?
    Can J Physiol Pharmacol 2016 Nov 24. Epub 2016 Nov 24.
    University of Szeged, Albert Szent-Györgyi Medical Center, Szeged, Hungary, Department of Pharmacology, Pharmacotherapy , Dóm tér 12 , Szeged, Hungary , 6720 ;
    This study aimed to examine whether inducible nitric oxide synthase (iNOS) plays a role in the delayed antiarrhythmic effect of sodium nitrite. Twenty-one dogs were infused intravenously with sodium nitrite (0.2 µmol/kg/min) for 20 min, either in the absence (n=12) or in the presence of the iNOS inhibitor S-(2-aminoethyl)-isothiourea (AEST; total dose: 2. Read More

    [Catheter ablation of ventricular extrasystoles and ventricular tachycardia in the elderly].
    Herzschrittmacherther Elektrophysiol 2017 Feb 7. Epub 2017 Feb 7.
    Klinik für Interventionelle Rhythmologie, Herz- und Gefäßklinik GmbH Bad Neustadt, Salzburger Leite 1, 97616, Bad Neustadt a. d. Saale, Deutschland.
    Background: The prevalence of structural heart disease increases with higher age, and thereby the basis for ventricular arrhythmias is created. Catheter ablation has been shown to be an effective therapy option that is very safe and achieves good long-term results in patients with recurrent ventricular tachycardia (VT). Data regarding ablation in patients older than 75 years is sparse, although this patient group was included as a minority in most published VT ablation studies. Read More

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