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Indian Pacing and Electrophysiology Journal

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https://www.readbyqxmd.com/read/29452255/radiofrequency-ablation-of-premature-ventricular-contractions-originating-from-uncommon-sites-of-right-ventricle
#1
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Arun Gopalakrishnan, Ajitkumar Valaparambil
Premature Ventricular Contraction (PVC)/ventricular tachycardia (VT) with left bundle branch block (LBBB) morphology and inferior axis has been described classically to originate from the right ventricular outflow tract (RVOT). Some uncommon sites of idiopathic ventricular arrhythmia (VA) origins have been revealed including tricuspid annulus (TA) and right ventricular (RV) inflow free wall region. We present a series of two cases who have undergone electrophysiological study and successful radiofrequency ablation of frequent monomorphic PVCs with LBBB pattern originating from relatively uncommon sites of RV - TA and RV inflow free wall region...
February 13, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29407483/persistent-ventricular-preexcitation-despite-right-bundle-branch-block
#2
Taihei Itoh, Takumi Yamada
A 44-year-old man with a history of ventricular preexcitation and supraventricular tachycardia was evaluated. The baseline electrocardiogram exhibited ventricular preexcitation with a normal PR interval and a minimally negative delta wave in lead V1 and positive delta waves in the inferior leads. The administration of adenosine resulted in a progressive prolongation of the PR interval with a fixed preexcitation degree, suggesting the presence of antegrade conduction over the fasciculo-ventricular pathway. When complete right bundle branch block occurred, the degree of preexcitation never changed...
January 30, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29396286/genetic-variants-in-post-myocardial-infarction-patients-presenting-with-electrical-storm-of-unstable-ventricular-tachycardia
#3
Advithi Rangaraju, Shuba Krishnan, G Aparna, Satish Sankaran, Ashraf U Mannan, B Hygriv Rao
Electrical storm (ES) is a life threatening clinical situation. Though a few clinical pointers exist, the occurrence of ES in a patient with remote myocardial infarction (MI) is generally unpredictable. Genetic markers for this entity have not been studied. In the present study, we carried out genetic screening in patients with remote myocardial infarction presenting with ES by next generation sequencing and identified 25 rare variants in 19 genes predominantly in RYR2, SCN5A, KCNJ11, KCNE1 and KCNH2, CACNA1B, CACNA1C, CACNA1D and desmosomal genes - DSP and DSG2 that could potentially be implicated in electrical storm...
January 30, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29325979/an-unusual-case-of-complete-atrioventricular-block-causing-takotsubo-syndrome
#4
Abhishek Rathore, Bharatraj Banavalikar, Jayaprakash Shenthar, Debashish Acharya, Javed Parvez, Kikkeri Hemanna Setty Srinivasa
Complete atrioventricular (AV) block in association with Takotsubo syndrome (TS) has been well recognized, but the cause and effect relationship has not been elucidated. We describe a 78-year-old female who presented with complete AV block but one week later developed new-onset, diffuse T-wave inversions, QT prolongation, and acceleration of junctional escape rate. Left ventriculogram revealed features typical of TS. One year after permanent pacemaker implantation, complete AV block persisted despite the reversal of wall motion defects implying that conduction abnormality was the trigger of TS rather than its consequence...
January 9, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29309837/desynchronization-in-a-cardiac-resynchronization-device-induced-by-a-pacemaker-mediated-tachycardia-algorithm
#5
S Serge Barold, Nigel Lever, Fiona Riddell, Andreas Kucher
This report describes the occurrence of desynchronization in a patient with a cardiac resynchronization device programmed with an active pacemaker-mediated tachycardia algorithm based on AV delay modification. Desynchronization was precipitated by sinus tachycardia and the abrupt return of the prevailing AV delay that followed the periodic prolongation of the AV delay mandated by activity of the algorithm. Prevention of desynchronization in this setting requires programming a right ventricular upper rate interval longer than the sum of the programmed ventriculoatrial interval and the AV delay...
January 5, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29287916/an-unusual-complication-of-adenosine-administration-in-supraventricular-tachycardia
#6
Praloy Chakraborty, Anandaraja Subramanian
No abstract text is available yet for this article.
December 26, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29274801/three-dimentional-electroanatomical-mapping-for-non-pulmonary-vein-foci-in-a-patient-with-complete-situs-inversus-and-dextrocardia
#7
Kentaro Minami, Koji Kumagai, Yoshinao Sugai, Kohki Nakamura, Shigeto Naito, Shigeru Oshima
In patients with atrial fibrillation (AF) having congenital anatomical abnormalities, such as complete situs inversus and dextrocardia, pulmonary vein isolation (PVI) ablation can be performed safety using a three-dimensional electroanatomical mapping system. However, it is not clear whether a three-dimensional electroanatomical mapping system can be used to detect non-PV ectopic beats initiating AF in patients with complete situs inversus and dextrocardia. Here, we report a 21-year-old man with complete situs inversus and dextrocardia, who showed AF caused by non-PV ectopic beats...
December 21, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29274800/cardiac-resynchronization-therapy-device-implantation-in-a-patient-with-persistent-left-superior-vena-cava-without-communicating-innominate-vein-should-we-proceed-from-the-same-side-a-dilemma-revisited
#8
Debabrata Bera, Neeta Bachani, Prashant Pawar, Chetan Rathi, Vadivelu Ramalingam, Yash Lokhandwala
Persistent left superior vena cava (PLSVC) is an uncommon congenital anomaly. We report a case of implantation of cardiac resynchronization therapy - pacemaker (CRT-P) device in a 38-year-old lady with idiopathic dilated cardiomyopathy. After left axillary vein puncture, we faced an unexpected entry of left subclavian to PLSVC draining into the coronary sinus (CS). The target posterolateral vein which had been identified before seemed to have an acute angle at its entry into the CS. Hence, at this stage we were in a dilemma, whether to switch to the right side or to continue from the same side...
December 21, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29274799/leadless-pacing-in-a-young-patient-with-cardioinhibitory-vasovagal-syncope
#9
Valentina De Regibus, Darragh Moran, Gian Battista Chierchia, Pedro Brugada, Carlo de Asmundis
Vasovagal syncope is characterized by vasodilatation and/or bradycardia and thereby a fall in arterial BP and global cerebral perfusion in response to a trigger. Although it is a benign condition, patients with frequent and traumatic episodes need treatment in order to improve quality of life. We describe the case of a 17-years-old boy suffering from cardioinhibitory syncope. At the end of a complete negative cardiac and neurological examination, a loop recorder was implanted. During the subsequent follow-up the ILR documented a 9-s pause...
December 21, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29269168/external-electrical-cardioversion-of-persistent-atrial-fibrillation-in-a-patient-with-a-micra%C3%A2-transcatheter-pacing-system
#10
K Filipovic, B Bellmann, J Lüker, D Steven, A Sultan
We report a case of a 85-year old woman with a preexisting Transcatheter Pacing System (TPS) (Micra™ VR, Fa. Medtronic, Inc., Minneapolis, MN, USA) undergoing several external electrical cardioversions (CV) for symptomatic persistent atrial fibrillation (persAF). Due to bradycardia in the setting of atrial fibrillation a right apical TPS implantation was performed earlier. Four weeks prior to presentation at our facility an unsuccessful CV with a maximum biphasic energy level of 360J was performed, after which amiodarone was initiated...
December 18, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29225010/initiation-and-outcomes-with-class-ic-antiarrhythmic-drug-therapy
#11
Xu Gao, Avirup Guha, Benjamin Buck, Dilesh Patel, Melissa J Snider, Michael Boyd, Muhammad Afzal, Auroa Badin, Hemant Godara, Zhenguo Liu, Jaret Tyler, Raul Weiss, Steven Kalbfleisch, John Hummel, Ralph Augostini, Mahmoud Houmsse, Emile G Daoud
BACKGROUND: Expert opinion recommends performing exercise testing with initiation of Class Ic antiarrhythmic medication. OBJECTIVE: To evaluate the rate and reason for discontinuation of Ic agent within the first year of follow up, with particular attention to rate of proarrhythmia and the value of routine treadmill testing. METHODS: This is a single center retrospective cohort study including consecutive patients with atrial arrhythmias who were initiated on a Class Ic agent from 2011 to 2016...
December 7, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29183714/interesting-response-of-narrow-qrs-tachycardia-to-premature-atrial-complex-what-is-the-mechanism
#12
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Hiren Kevadiya, Sreevilasam Pushpangadhan Abhilash, Ajitkumar Valaparambil
No abstract text is available yet for this article.
November 25, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29183713/right-bundle-branch-block-pattern-after-uncomplicated-right-ventricular-outflow-tract-pacing-in-a-patient-with-a-left-sided-superior-vena-cava-and-corrected-tetralogy-of-fallot
#13
Anunay Gupta, Neeraj Parakh, Rajnish Juneja
Usually an electrocardiogram after right ventricular (RV) pacing should yield left bundle branch block (LBBB) pattern. However, the presence of right bundle branch block (RBBB) pattern after pacemaker implantation should alert the physician to a malposition of lead. We report a case of 18-year-old female who underwent dual chamber pacemaker implantation and had RBBB pattern post implantation. Detailed evaluation revealed an uncomplicated right ventricular outflow tract pacing. The possible causes of this abnormal pattern after an uncomplicated RV pacing are also reviewed...
November 25, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29183712/correlation-between-the-sudden-jump-like-increases-of-the-atrio-hisian-interval-induced-during-burst-atrial-pacing-and-during-programmed-atrial-stimulation-in-patients-with-atrioventricular-nodal-reentrant-tachycardia
#14
Iskra H Bayraktarova, Milko K Stoyanov, Boyan T Kunev, Tchavdar N Shalganov
PURPOSE: To study the correlation between the sudden prolongations of the atrio-Hisian (AH) interval with ≥50 ms during burst and programmed atrial stimulation, and to define whether the AH jump during burst atrial pacing is a reliable diagnostic criterion for dual AV nodal physiology. METHODS: Retrospective data on 304 patients with preliminary ECG diagnosis of AV nodal reentrant tachycardia (AVNRT), confirmed during electrophysiological study, was analyzed for the presence of AH jump during burst and programmed atrial stimulation, and for correlation between the pacing modes for inducing the jump...
November 25, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29155027/serum-level-of-transforming-growth-factor-beta-1-is-associated-with-left-atrial-voltage-in-patients-with-chronic-atrial-fibrillation
#15
Shilu Zhao, Mingfang Li, Weizhu Ju, Lingyun Gu, Fengxiang Zhang, Hongwu Chen, Kai Gu, Bing Yang, Minglong Chen
BACKGROUND: Atrial tissue fibrosis can cause electrical or structural remodeling in patients with atrial fibrillation. Transforming growth factor beta 1(TGF-β1) signaling acts as a central role in fibroblast activation. In this report, we aimed to investigate the relationship between serum level of TGF-β1 and mean left atrial voltage in patients with chronic atrial fibrillation (CAF). METHODS: A total of 16 consecutive adult patients with CAF who underwent catheter ablation were enrolled...
November 15, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29113751/cardiomyopathy-induced-by-incessant-ventricular-tachycardia-originating-in-the-vicinity-of-the-his-bundle
#16
Sana Ouali, Manel Ben Halima, Selim Boudiche, Anissa Gharbi, Khedher Nadim, Kaouthar Hakim, Fatma Ouarda, Mohamed Sami Mourali
A 04-year-old boy was referred to our institution with severe, progressive heart failure of 4-months duration associated with a persistent wide QRS tachycardia with left bundle branch block and severe left ventricular dysfunction. Because of incessant wide QRS tachycardia refractory to antiarrhythmic drugs, he was referred for electrophysiological study. The ECG was suggestive of VT arising from the right ventricle near the His area. Electrophysiological study revealed that origin of tachycardia was septum of the right ventricle, near His bundle, however the procedure was not successful and an inadvertent complete atrioventricular conduction block occurred...
November 4, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29113701/electrocardiographic-patterns-in-biventricular-pacing-delivered-by-second-generation-cardiac-resynchronization-devices
#17
Amirfarjam Fazelifar, Fatemeh Jorfi, Majid Haghjoo
BACKGROUND: With increasing use of cardiac resynchronization therapy (CRT), treating physicians should be familiar with different electrocardiographic (ECG) patterns of left ventricular (LV) lead and biventricular (BiV) pacing. However, there are a few publications on ECG patterns during BiV pacing. PURPOSE: This study was sought to determine different ECG patterns in patients with BiV pacing. METHODS: Twelve-lead ECGs during BiV pacing (right ventricular leads at apex and LV leads in one of the lateral coronary veins) were analyzed in 181 consecutive patients (121 male; mean age, 62...
November 4, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29231823/a-deadly-mix-rheumatic-mitral-stenosis-preexcited-atrial-fibrillation-left-atrial-appendage-thrombus-and-left-atrial-appendage-accessory-pathway
#18
Kabilan S Jagadheesan, Sasinthar Rangasamy, Raja J Selvaraj
No abstract text is available yet for this article.
November 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29231822/zero-fluoroscopy-radiofrequency-ablation-for-typical-atrioventricular-nodal-reentrant-tachycardia-avnrt
#19
Anandaroop Lahiri, Sirish Chandra Srinath, David Chase, John Roshan
No abstract text is available yet for this article.
November 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29231821/familial-atrioventricular-nodal-re-entrant-tachycardia-a-case-seriers-and-a-systematic-review
#20
Muthiah Subramanian, M S Harikrishnan, Mukund A Prabhu, Praveen G Pai, Saritha S Shekhar, Kumaraswamy Natarajan
Multiple reports of familial clustering suggest that genetic factors may contribute in the pathogenesis of atrioventricular nodal re-entrant tachycardia (AVNRT). We report three cases of AVNRT in a father and his two sons along with a review of literature of other similar cases. Electrophysiological studies induced typical AVNRT, which was successfully eliminated by radiofrequency ablation in all of them. Of the 22 reported cases, 96% had typical (slow-fast) variant of AVNRT. The predominant pattern of inheritance appears to be autosomal dominant, though other patterns may exist...
November 2017: Indian Pacing and Electrophysiology Journal
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