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Atrial tachycardia

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https://www.readbyqxmd.com/read/28717071/anti-mitochondrial-m2-antibodies-enhance-the-risk-of-supraventricular-arrhythmias-in-patients-with-elevated-hepatobiliary-enzyme-levels
#1
Hiroki Konishi, Koji Fukuzawa, Shumpei Mori, Seimi Satomi-Kobayashi, Kunihiko Kiuchi, Atsushi Suzuki, Yoshihiko Yano, Akihiro Yoshida, Ken-Ichi Hirata
Objective Supraventricular arrhythmias are commonly detected in patients with anti-mitochondrial antibody M2 (AMA-M2)-associated myopathy. However, the prevalence of supraventricular arrhythmias in unselected AMA-M2-positive patients and the impact of AMA-M2 on supraventricular arrhythmias have yet to be fully investigated. Methods We analyzed 384 patients (116 men; age, 60 [48-69] years), who underwent AMA-M2 testing following the detection of elevated hepatobiliary enzymes. Supraventricular arrhythmias involving atrial fibrillation, atrial flutter, atrial tachycardia, sick sinus syndrome, and atrial standstill were confirmed by a 12-lead electrocardiogram, 24-hour ambulatory monitoring, and physician-assigned diagnoses within the three years before and two years after the AMA-M2 test...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28713823/intracardiac-hemostasis-and-fibrinolysis-parameters-in-patients-with-atrial-fibrillation
#2
Noémi Klára Tóth, Zoltán Csanádi, Orsolya Hajas, Alexandra Kiss, Edina Nagy-Baló, Kitti Bernadett Kovács, Ferenc Sarkady, László Muszbek, Zsuzsanna Bereczky, László Csiba, Zsuzsa Bagoly
AIMS: To identify intracardiac hemostasis or fibrinolysis abnormalities, which are associated with atrial fibrillation (AF) and increase the risk of thromboembolism. PATIENTS AND METHODS: Patient group consisted of 24 patients with AF and control group included 14 individuals with other supraventricular tachycardia undergoing transcatheter radiofrequency ablation. Blood samples were drawn from the femoral vein (FV), left atrium (LA), and left atrial appendage (LAA) before the ablation procedure...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28712558/catheter-ablation-of-accessory-pathway-14-year-trends-in-utilization-and-complications-in-adults-in-the-united-states
#3
Jalaj Garg, Neeraj Shah, Parasuram Krishnamoorthy, Kathan Mehta, Babak Bozorgnia, Noel G Boyle, Ronald Freudenberger, Andrea Natale
BACKGROUND: The aim of this study was to determine the temporal trends in utilization of catheter ablation of accessory pathways in the United States. METHODS: All patients from the Nationwide Inpatient Sample (NIS) ≥18years of age with a primary diagnosis of anomalous atrioventricular excitation syndrome (International Classification of Diseases, Ninth Edition, Clinical Modification [ICD-9-CM] code 426.7) were included in the study. Patients who underwent catheter ablation were identified using ICD-9-CM procedure code 37...
June 30, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28712176/ecg-abnormalities-in-patients-with-chronic-kidney-disease
#4
Salman Shafi, Mohammad Saleem, Roshina Anjum, Wajid Abdullah, Tahir Shafi
BACKGROUND: Chronic kidney disease (CKD) is associated with increased risk of cardiovascular disease. Electrocardiographic (ECG) abnormalities are common in CKD patients. However, there is variation in literature regarding frequency of ECG abnormalities in CKD patients and limited information in local population. METHODS: The study design was cross-sectional in nature. All patients between ages of 20-80 years with CKD not previously on renal replacement therapy who were admitted to nephrology ward at a tertiary care facility over a 6-month period were included...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28706590/entirely-subcutaneous-defibrillator-and-complex-congenital-heart-disease-data-on-long-term-clinical-follow-up
#5
Paolo Ferrero, Hussam Ali, Palash Barman, Sara Foresti, Pierpaolo Lupo, Emilia D'Elia, Riccardo Cappato, Alan Graham Stuart
AIM: To describe the long-term follow-up of patients with complex congenital heart disease who underwent subcutaneous implantable cardiac defibrillator (S-ICD), focusing on local complications, appropriate and inappropriate shocks. METHODS: Patients with complex congenital heart disease underwent S-ICD implant in two centers with the conventional technique. Data at follow-up were retrieved from clinical notes and institutional database. RESULTS: Eight patients were implanted in two centres between 2010 and 2016...
June 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28706585/atrial-tachyarrhythmia-in-adult-congenital-heart-disease
#6
REVIEW
Arsha Karbassi, Krishnakumar Nair, Louise Harris, Rachel M Wald, S Lucy Roche
The adult congenital heart disease (ACHD) population continues to grow and most cardiologists, emergency room physicians and family doctors will intermittently come into contact with these patients. Oftentimes this may be in the setting of a presentation with atrial tachyarrhythmia; one of the commonest late complications of ACHD and problem with potentially serious implications. Providing appropriate initial care and ongoing management of atrial tachyarrhythmia in ACHD patients requires a degree of specialist knowledge and an awareness of certain key issues...
June 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28702812/characterisation-of-human-av-nodal-properties-using-a-network-model
#7
Mikael Wallman, Frida Sandberg
Characterisation of the AV-node is an important step in determining the optimal form of treatment for supraventricular tachycardias. To integrate and analyse patient-specific measurements, mathematical modelling has emerged as a valuable tool. Here we present a model of the human AV-node, consisting of a series of interacting nodes, each with separate dynamics in refractory time and conduction delay. The model is evaluated in several scenarios, including atrial fibrillation (AF) and clinical pacing, using simulated and measured data...
July 13, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28701211/inpatient-rehabilitation-for-adult-patients-with-marfan-syndrome-an-observational-pilot-study
#8
Dieter Benninghoven, Denise Hamann, Yskert von Kodolitsch, Meike Rybczynski, Julia Lechinger, Friedrich Schroeder, Marina Vogler, Eike Hoberg
BACKGROUND: Advances in medical, interventional and surgical treatment have increased average life expectancy of patients with congenital heart defects. As a result a new group of adult patients with congenital cardiac defects requires medical rehabilitation. Patients with Marfan syndrome (MFS) are a relevant group among these patients. So far, no reports on the effectiveness of specialized rehabilitation programmes for MFS patients exist. We implemented an inpatient 3-week rehabilitation program for MFS patients at the Muehlenberg-Clinic for rehabilitation and assessed the medical safety as well as the impact of the program on physical fitness and psychological wellbeing of participants by means of an observational pilot study...
July 12, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28700475/association-of-ventricular-arrhythmia-and-in-hospital-mortality-in-stroke-patients-in-florida-a-nonconcurrent-prospective-study
#9
Arielle A Dahlin, Chase C Parsons, Noël C Barengo, Juan Gabriel Ruiz, Melissa Ward-Peterson, Juan Carlos Zevallos
Stroke remains one of the leading causes of death in the United States. Current evidence identified electrocardiographic abnormalities and cardiac arrhythmias in 50% of patients with an acute stroke. The purpose of this study was to assess whether the presence of ventricular arrhythmia (VA) in adult patients hospitalized in Florida with acute stroke increased the risk of in-hospital mortality.Secondary data analysis of 215,150 patients with ischemic and hemorrhagic stroke hospitalized in the state of Florida collected by the Florida Agency for Healthcare Administration from 2008 to 2012...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28687671/tachycardia-induced-j-wave-changes-in-patients-with-and-without-idiopathic-ventricular-fibrillation
#10
Yoshiyasu Aizawa, Seiji Takatsuki, Takahiko Nishiyama, Takehiro Kimura, Shun Kohsaka, Yoshiaki Kaneko, Yasuya Inden, Naohiko Takahashi, Satoshi Nagase, Yoshifusa Aizawa, Keichi Fukuda
BACKGROUND: To know the underlying mechanisms of J waves, the response to atrial pacing was studied in patients with idiopathic ventricular fibrillation (IVF) and patients with non-IVF. METHODS AND RESULTS: In 8 patients with IVF, the J-wave amplitude was measured before, during, and after atrial pacing. All patients had episodes of ventricular fibrillation without structural heart disease. The responses of J waves were compared with those of the 17 non-IVF control subjects who revealed J waves but no history of cardiac arrest and underwent electrophysiological study...
July 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28687248/device-therapy-for-rate-control-pacing-resynchronisation-and-av-node-ablation
#11
REVIEW
Dennis H Lau, Anand Thiyagarajah, Stephan Willems, Thomas Rostock, Dominik Linz, Martin K Stiles, David Kaye, Jonathan M Kalman, Prashanthan Sanders
Atrioventricular node ablation (AVNA) is generally reserved for patients whose atrial fibrillation (AF) is refractory all other therapeutic options, since the recipients will often become pacemaker dependent. In such patients, this approach may prove particularly useful, especially if a tachycardia-induced cardiomyopathy is suspected. Historically, an "ablate and pace" approach has involved AVNA and right ventricular pacing, with or without an atrial lead. There is also an evolving role for atrioventricular node ablation in patients with AF who require cardiac resynchronization therapy for treatment of systolic heart failure...
May 31, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28685701/the-role-of-quinidine-in-the-pharmacological-therapy-of-ventricular-arrhythmias-quinidine
#12
Milica Bajcetic, Teodora Vidonja Uzelac, Aleksandra Kezic, Milica Bajcetic
BACKGROUND: Historically, quinidine was the first medicine used in the therapy of heart arrhythmias. Studies in the early 20th century identified quinidine, a diastereomer of the antimalarial quinine, as the most potent of the antiarrhythmic substances extracted from the cinchona plant. Quinidine is used by the 1920s, as an antiarrhythmic agent to maintain sinus rhythm after conversion from atrial flutter or atrial fibrillation and to prevent recurrence of ventricular tachycardia or ventricular fibrillation...
July 7, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28685697/does-pharmacological-therapy-still-play-a-role-in-preventing-sudden-death-in-surgically-treated-tetralogy-of-fallot
#13
Bronzetti Gabriele, Brighenti Maurizio, Bonvicini Marco
Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease, with a familial recurrence risk of 3%. Despite the performing of an optimal surgical repair, TOF patients may feature a poor medium and long-term survival rate: atrial re-entrant tachycardia will develop in more than 30% of patients and high-grade ventricular arrhythmias will be seen in about 10% of patients. These life-threatening arrhythmias and consequent sudden death continue to represent serious complications following TOF repair...
July 7, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28684436/major-adverse-events-and-atrial-tachycardia-in-ebstein-s-anomaly-predicted-by-cardiovascular-magnetic-resonance
#14
Riikka Rydman, Yumi Shiina, Gerhard-Paul Diller, Koichiro Niwa, Wei Li, Hideki Uemura, Anselm Uebing, Umberto Barbero, Beatriz Bouzas, Sabine Ernst, Tom Wong, Dudley J Pennell, Michael A Gatzoulis, Sonya V Babu-Narayan
OBJECTIVES: Patients with Ebstein's anomaly of the tricuspid valve (EA) are at risk of tachyarrhythmia, congestive heart failure and sudden cardiac death. We sought to determine the value of cardiovascular magnetic resonance (CMR) for predicting these outcomes. METHODS: Seventy-nine consecutive adult patients (aged 37±15 years) with unrepaired EA underwent CMR and were followed prospectively for a median 3.4 (range 0.4-10.9) years for clinical outcomes, namely major adverse cardiovascular events (MACEs: sustained ventricular tachycardia/heart failure hospital admission/cardiac transplantation/death) and first-onset atrial tachyarrhythmia (AT)...
July 6, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28682147/predictors-of-future-arrhythmic-events-in-patients-with-unexplained-syncope
#15
Dirk Prochnau, Tobias Lambert, Holger Sigusch, Ralf Surber, Paul Christian Schulze
AIMS: The purpose of this study was to examine the usefulness of implantable loop recorders (ILRs) for symptom-rhythm correlation and to identify predictors of future arrhythmic events. PATIENTS AND METHODS: In our dual-centre study, we analysed ILR data of 189 patients (mean age 67.4 ± 15.2 years, 114 male) with unexplained syncope (single syncope 21 patients, recurrent 168 patients, traumatic injury 43 patients). Patients had severe comorbidities such as hypertension (n = 127), coronary artery disease (n = 31), diabetes mellitus (n = 33) and chronic renal insufficiency (n = 18)...
July 6, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28680618/idiopathic-left-ventricular-tachycardia-following-atrioventricular-conduction-block-by-rapid-atrial-tachycardia
#16
Kazuyoshi Suenari, Naoya Mitsuba, Hidekazu Hirao, Hironori Ueda, Yasuki Kihara
The present case demonstrated a rare situation alternating between a repetitive atrial tachycardia (AT) and ventricular tachycardia (VT). A unique induction mechanism was noted in which the VT was induced after Wenckebach AV node conduction block following the repetitive rapid AT.
July 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28675182/unilateral-atrial-fibrillation-how-common-is-atrial-divorce
#17
J Ker
Atrial fibrillation is the most common pathologic supraventricular tachycardia. It has many causes, is an expensive disease, impairs quality of life and leads to an increased risk of death. Atrial dissociation is characterised by the presence of two independent sets of P-waves. This peculiar abnormality may give rise to the scenario where one atrium is in atrial fibrillation while the other is in sinus rhythm. This is the first published case of atrial dissociation where the phenomenon is demonstrated by transmitral and transtricuspid pulsed wave Doppler...
June 2017: Journal of the Royal College of Physicians of Edinburgh
https://www.readbyqxmd.com/read/28674628/syndromes-of-orthostatic-intolerance-and-syncope-in-young-adults
#18
Viktor Hamrefors, Jasmina Medic Spahic, David Nilsson, Martin Senneby, Richard Sutton, Olle Melander, Artur Fedorowski
OBJECTIVE: To explore the clinical and neuroendocrine characteristics of syndromes of orthostatic intolerance and syncope in young adults. METHODS: Two hundred and thirty-six patients aged 18-40 years with orthostatic intolerance and/or syncope were examined by head-up tilt test (HUT). Plasma levels of epinephrine, norepinephrine, renin, C-terminal-pro-arginine-vasopressin (CT-proAVP), C-terminal-endothelin-1 and mid-regional-fragment of pro-atrial-natriuretic-peptide (MR-proANP) were analysed...
2017: Open Heart
https://www.readbyqxmd.com/read/28667725/right-atrial-diverticulosis-and-early-onset-arrhythmia-rare-cause-of-incessant-neonatal-arrhythmia
#19
Neeraj Aggarwal, Raja Joshi, Reena K Joshi, Mridul Agarwal
BACKGROUND: Atrial flutter not responding to medications could be secondary to structural malformations of heart. CASE CHARACTERISTICS: A 5-year-old child with resistant arrhythmia, with onset in neonatal period. OBSERVATIONS: Multiple right atrial diverticuli were detected on CT angiography and cardiac catheterization. Patient reverted to sinus rhythm following surgical excision of diverticuli. MESSAGE: In cases of intractable supraventricular tachycardia, structural anomalies of atrium should be suspected...
June 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28664343/catheter-ablation-of-atypical-atrial-flutter-a-novel-3d-anatomic-mapping-approach-to-quickly-localize-and-terminate-atypical-atrial-flutter
#20
Sri Sundaram, William Choe, J Ryan Jordan, Nate Mullins, Charles Boorman, Eric J Kessler, Sunil Nath
PURPOSE: This study aims to describe a novel method of High Density Activation Sequence Mapping combined with Voltage Gradient Mapping Overlay (HD-VGM) to quickly localize and terminate atypical atrial flutter. METHODS: Twenty-one patients presenting with 26 different atypical atrial flutter circuits after a previous catheter or surgical AF ablation were studied. HD-VGM was performed with a commercially available impedance-based mapping system to locate and successfully ablate the critical isthmus of each tachycardia circuit...
June 29, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
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