keyword
MENU ▼
Read by QxMD icon Read
search

AV Node

keyword
https://www.readbyqxmd.com/read/29733473/the-prevalence-and-characteristics-of-co-existed-atrioventricular-nodal-reentrant-tachycardia-and-idiopathic-left-fascicular-ventricular-tachycardia
#1
Fa-Po Chung, Vu Van Ba, Yenn-Jiang Lin, Shih-Lin Chang, Li-Wei Lo, Yu-Feng Hu, Ta-Chuan Tuan, Tze-Fan Chao, Jo-Nan Liao, Chin-Yu Lin, Ming-Hsiung Hsieh, Shih-Ann Chen
BACKGROUND: Co-existence of idiopathic left fascicular ventricular tachycardia (ILFVT) and atrioventricular nodal reentrant tachycardia (AVNRT) has been rarely reported. OBJECTIVES: The study aimed at elucidating the prevalence of co-existed AVNRT in patients with ILFVT during longitudinal follow-up. The electrophysiological properties and clinical predictors of co-existed ILFVT and AVNRT were investigated. METHODS: From 1999 to 2017, a total of 108 patients (age: 33...
May 7, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29686871/authors-reply-unravelling-the-mysteries-of-the-human-av-node
#2
Igor R Efimov, Sharon George
No abstract text is available yet for this article.
March 2018: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/29550833/a-case-of-lown-ganong-levine-syndrome-due-to-an-accessory-pathway-of-james-fibers-or-enhanced-atrioventricular-nodal-conduction-eavnc
#3
Juanita Hunter, Emmanouil Tsounias, John Cogan, Ming-Lon Young
BACKGROUND Lown-Ganong-Levine syndrome, includes a short PR interval, normal QRS complex, and paroxysmal tachycardia. The pathophysiology of this syndrome includes an accessory pathway connecting the atria and the atrioventricular (AV) node (James fiber), or between the atria and the His bundle (Brechenmacher fiber). Similar features are seen in enhanced atrioventricular nodal conduction (EAVNC), with the underlying pathophysiology due to a fast pathway to the AV node, and with the diagnosis requiring specific electrophysiologic criteria...
March 18, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29496606/safety-and-feasibility-of-leadless-pacemaker-in-patients-undergoing-atrioventricular-node-ablation-for-atrial-fibrillation
#4
Bharath Yarlagadda, Mohit K Turagam, Tawseef Dar, Pragna Jangam, Vaishnavi Veerapaneni, Donita Atkins, Sudharani Bommana, Paul Friedman, Abhishek J Deshmukh, Rahul Doshi, Vivek Y Reddy, Srinivas R Dukkipati, Andrea Natale, Dhanunjaya Lakkireddy
BACKGROUND: Atrioventricular node (AVN) ablation and permanent pacing is an established strategy for rate control in the management of symptomatic atrial fibrillation (AF). Leadless pacemakers (LPs) can overcome some of the short-term and long-term limitations of conventional transvenous pacemakers (CTPs). OBJECTIVES: The purpose of this study was to compare the feasibility and safety of LP with those of single-chamber CTP in patients with AF undergoing AVN ablation...
March 1, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29492807/increased-healthcare-utilization-associated-with-complete-atrioventricular-block-in-pacemaker-patients
#5
Suneet Mittal, Dan L Musat, Michael H Hoskins, Julie B Prillinger, Gregory J Roberts, Yelena Nabutovsky, Faisal M Merchant
PURPOSE: The purpose of the current study is to characterize and quantify the impact of complete atrioventricular block (cAVB) on heart failure hospitalization (HFH) and healthcare utilization in pacemaker (PM) patients. METHODS: Patients ≥ 18 years implanted with a dual-chamber PM from April 2008 to March 2014 were selected from the MarketScan® Commercial and Medicare Supplemental claims databases. Patients with ≤ 1-year continuous MarketScan enrollment prior to and post-implant, and those with prior HF diagnosis were excluded...
April 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29397525/coronary-sinus-morphology-in-pediatric-patients-with-supraventricular-tachycardia
#6
Matthew B Ambrose, Jennifer N Avari Silva, Michael Rudokas, Tammy M Bowman, Joshua Murphy, George F Van Hare
PURPOSE: The anatomic basis of atrioventricular node reentrant tachycardia (AVNRT) remains incompletely characterized in children. Differences in coronary sinus (CS) size and morphology have been observed in adults with AVNRT but have not been well characterized in children. METHODS: Children (< 18 years) brought to the EP lab with supraventricular tachycardia for ablation underwent CS venography. A blinded pediatric interventional cardiologist performed CS measurements, which were indexed to body surface area...
March 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29397524/rationale-and-design-of-the-trichampion-trial-triple-chamber-pacing-in-hypertrophic-obstructive-cardiomyopathy-patients
#7
Antonio Berruezo, Markus Linhart, Angelo Auricchio, José Luis Zamorano, Pilar Santamaria, Roger Borràs, Felip Burgos, Josep Brugada
PURPOSE: Dual-chamber (DDD) pacing has been used for treatment of patients with hypertrophic obstructive cardiomyopathy (HOCM). Due to inconclusive results in prior trials, current guidelines assign DDD pacing a class IIb indication in selected patients. Prior observations indicate that lack of clinical improvement may result from suboptimal effect of DDD pacing with non-physiological AV intervals due to fusion of intrinsic and paced QRS complex. METHODS: The Triple Chamber Pacing in Hypertrophic Obstructive Cardiomyopathy Patients (TRICHAMPION) trial is a prospective, randomized, single-blinded, multicenter study to investigate the benefit of atrial synchronous biventricular pacing (CRT-P) in highly symptomatic HOCM patients with severe left ventricular outflow tract (LVOT) obstruction who are not candidates for ablative therapies...
March 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29274077/increasing-t-type-calcium-channel-activity-by-%C3%AE-adrenergic-stimulation-contributes-to-%C3%AE-adrenergic-regulation-of-heart-rates
#8
Yingxin Li, Xiaoxiao Zhang, Chen Zhang, Xiaoying Zhang, Ying Li, Zhao Qi, Christopher Szeto, Mingxin Tang, Yizhi Peng, Jeffery D Molkentin, Steven R Houser, Mingxing Xie, Xiongwen Chen
Cav3.1 T-type Ca2+ channel current (ICa-T ) contributes to heart rate genesis but is not known to contribute to heart rate regulation by the sympathetic/β-adrenergic system (SAS). We show that the loss of Cav3.1 makes the beating rates of the heart in vivo and perfused hearts ex vivo, as well as sinoatrial node cells, less sensitive to β-adrenergic stimulation; it also renders less conduction acceleration through the atrioventricular node by β-adrenergic stimulation. Increasing Cav3.1 in cardiomyocytes has the opposite effects...
April 1, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29260369/predictors-of-right-ventricular-pacing-and-pacemaker-dependence-in-transcatheter-aortic-valve-replacement-patients
#9
Esseim Sharma, Antony F Chu
PURPOSE: Transcatheter aortic valve replacement (TAVR) is an increasingly prevalent therapy in patients with severe symptomatic aortic stenosis. Conduction disturbances requiring permanent pacemaker (PPM) implantation are a known complication of TAVR. This study investigated the progression of cardiac conduction disease in the post-TAVR pacemaker population and identified predictors of post-TAVR right ventricular (RV) pacing dependence. METHODS: Prospectively collected echocardiographic, ECG, and PPM interrogation data of 262 consecutive patients who underwent TAVR with placement of a balloon-expandable valve at one institution from March 2012 to October 2016 were analyzed...
January 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29244066/electrocardiographic-and-electrophysiologic-differentiation-between-atriofascicular-long-atrioventricular-and-short-atrioventricular-decrementally-conducting-accessory-pathways
#10
Jian-Du Yang, Gong-Bu Zhou, Qi Sun, Xiao-Gang Guo, Xu Liu, Bin Luo, Hui-Qiang Wei, Jackson J Liang, Shuanglun Xie, Fei-Fan Ouyang, Jian Ma
Aims: We aimed to examine the electrocardiographic and electrophysiologic characteristics of anterograde-conducting decremental accessory pathways (DAP) and to identify surrogate criteria to distinguish short atrioventricular (SAV) DAP from atriofascicular (AF) AP and long atrioventricular (LAV) DAP. Methods and results: We identified all patients with DAPs and analysed electrocardiographic and electrophysiologic characteristics. Distal insertion sites were examined using existing criteria, including V-H interval, ventricular activation at the right ventricular apex, and around tricuspid annulus during antidromic atrioventricular re-entrant tachycardia (A-AVRT) or complete pre-excitation and evaluated the AV node-like properties according to the response to adenosine and radiofrequency ablation...
December 13, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29240293/transvenous-pacemaker-implantation-after-the-bidirectional-glenn-operation-for-patients-with-complex-congenital-disease
#11
Danielle E Harake, Kevin M Shannon, Jamil A Aboulhosn, Jeremy P Moore
INTRODUCTION: The bidirectional Glenn operation for congenital heart disease produces anatomical constraints to conventional transvenous pacemaker implantation. An iliac approach, although not previously described in this population, is potentially a preferable alternative to a thoracotomy for epicardial pacing. METHODS AND RESULTS: A single-center retrospective review was performed for all patients that underwent transvenous pacemaker implantation following the bidirectional Glenn operation with partial biventricular repair...
March 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29225866/magnetic-guided-catheter-ablation-of-twin-av-nodal-reentrant-tachycardia-in-a-patient-with-left-atrial-isomerism-interrupted-inferior-vena-cana-and-kawashima-fontan-procedure
#12
Francis Bessière, François-Pierre Mongeon, Judith Therrien, Paul Khairy
Twin AV nodal reentrant tachycardia most commonly occurs in patients with complex congenital heart disease who have two distinct AV nodes, His bundles, and non-preexcited QRS morphologies. Catheter ablation of the weaker AV node may be hindered by anatomical complexities. In such cases, remote magnetic guidance offers a potentially effective solution.
December 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29221317/cystic-tumor-of-the-atrioventricular-node-a-review-of-the-literature
#13
REVIEW
Jessica G Y Luc, Kevin Phan, Vakhtang Tchantchaleishvili
Primary cardiac tumors are uncommon clinical entities with an incidence of 0.0017% to 0.03% of all autopsies. Cystic tumor of the atrioventricular (AV) node, also known as mesothelioma of the AV node, is a benign congenital tumor that is located in the triangle of Koch in the AV nodal region of the atrial septum of the heart. It comprises of 2.7% of cardiac tumors and is the most common primary cardiac tumor causing sudden death. We herein review the etiology, presentation, differential diagnosis, diagnosis, management, surgical approaches and outcomes of this rare tumor...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29165759/transient-receptor-potential-melastatin-4-cation-channel-in-pediatric-heart-block
#14
J Tian, X-J An, M-Y Fu
Progressive cardiac conduction disease (PCCD) is a common pediatric heart conduction disorder. It is an autosomal inheritance of rare mutations, which leads to familial cases of PCCD. In these cases, the His-Purkinje system's conductive capacity is progressively deranged, involving either right or left bundle branch block. Also, QRS complexes display widening is an important characteristic that culminates in complete AV block, syncope, and sudden death. Mutations in TRPM4 gene that encodes for transient receptor potential melastatin 4 have recently been reported to cause familial cases of PCCD and heart block...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29134433/practice-makes-perfect-relationship-between-hospital-procedure-volume-and-permanent-pacemaker-implantation-after-paroxysmal-supraventricular-tachycardia-ablation
#15
Vratika Agarwal, Neeraj Shah, Kathan Mehta, Anand Agarwal, Jonathan Willner, James Lafferty
PURPOSE: Paroxysmal supraventricular tachycardia (PSVT) ablation can result in injury to the atrioventricular (AV) node causing complete heart block requiring permanent pacemaker (PPM) implantation. Few studies have examined the impact of hospital PSVT ablation volume and PPM implantation rates post ablation. METHODS: We included adult patients from the Nationwide Inpatient Sample (NIS) database, from 1998 to 2011, using ICD-9 diagnoses codes 427.0 and 427.89 for PSVT and ICD-9 procedure code 37...
November 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29079566/swine-atrioventricular-node-ablation-using-stereotactic-radiosurgery-methods-and-in-vivo-feasibility-investigation-for-catheter-free-ablation-of-cardiac-arrhythmias
#16
Marwan M Refaat, Jad A Ballout, Patrick Zakka, Mostafa Hotait, Karine A Al Feghali, Ibrahim Abu Gheida, Charbel Saade, Mukbil Hourani, Fady Geara, Malek Tabbal, Pierre Sfeir, Wassim Jalbout, Wael Al-Jaroudi, Abdo Jurjus, Bassem Youssef
BACKGROUND: Linear accelerator-based stereotactic radiosurgery delivered to cardiac arrhythmogenic foci could be a promising catheter-free ablation modality. We tested the feasibility of in vivo atrioventricular (AV) node ablation in swine using stereotactic radiosurgery. METHODS AND RESULTS: Five Large White breed swine (weight 40-75 kg; 4 females) were studied. Single-chamber St Jude pacemakers were implanted in each pig. The pigs were placed under general anesthesia, and coronary/cardiac computed tomography simulation scans were performed to localize the AV node...
October 27, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29073000/-optimized-lv-only-pacing-using-a-dual-chamber-pacemaker-as-a-cost-effective-alternative-to-crt
#17
Maneesh K Rai, Mukund A Prabhu, Abhishek Sharma, Ritesh Vekariya, Padmanabh Kamath, Narasimha Pai, Ramanath L Kamath
BACKGROUND: Cardiac Resynchronization therapy (CRT) remains largely under-used in developing countries owing to the high cost of therapy. In this pilot study, we explore 'optimized' Left Ventricle Only Pacing (LVOP) as a cost effective alternative to cardiac resynchronization therapy in selected patients with heart failure. HYPOTHESIS: In economically poorer patients with heart failure, left bundle branch block (LBBB) and intact AV node conduction, synchronization can be obtained using a dual chamber pacemaker (leads in right atrium and Left ventricle) with the help of 2D strain imaging...
May 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/28976387/-bradyarrhythmias-and-pacemaker-indications-in-elderly-patients
#18
İbrahim Faruk Aktürk, Mustafa Kemal Erol
With the dramatic increase in the number of elderly people in most parts of the world and in our country there will be an accompanying increase in patients with sinus node dysfunction (SND) and atrioventricular (AV) block. For this reason, it will be essential for health care personnel to have a basic knowledge of bradyarrhythmias and the special considerations required for managing these rhythms in elderly patients. Because of frailty of this patient group indivualised approach and consideration for management of these patients must be done carefully...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28940592/the-av-node
#19
Joseph Gascho
No abstract text is available yet for this article.
November 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28902899/selective-autonomic-stimulation-of-the-av-node-fat-pad-to-control-rapid-post-operative-atrial-arrhythmias
#20
Marco A Mercader, Dingchao He, Aditya C Sharma, Mark C Marchitto, Gregory Trachiotis, Gene A Bornzin, Richard Jonas, Jeffrey P Moak
Junctional ectopic tachycardia (JET) and atrial fibrillation (AF) occur in patients recovering from open-heart surgery (OHS). Pharmacologic treatment is used for the control of post-operative atrial arrhythmias (POAA), but is associated with side effects. There is a need for a reversible, modulated solution to rate control. We propose a non-pharmacologic technique that can modulate AV nodal conduction in a selective fashion. Ten mongrel dogs underwent OHS. Stimulation of the anterior right (AR) and inferior right (IR) fat pad (FP) was done using a 7-pole electrode...
2017: PloS One
keyword
keyword
107344
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"