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https://www.readbyqxmd.com/read/27920828/detection-of-sequential-activation-of-left-atrium-and-coronary-sinus-musculature-in-the-general-population
#1
Masaki Ota, Yoshiaki Kaneko, Tadashi Nakajima, Tadanobu Irie, Takafumi Iijima, Akihiro Saito, Masahiko Kurabayashi
BACKGROUND: The direction of impulse propagation across the coronary sinus (CS) musculature (CSM) is an important piece of the mechanistic puzzle underlying atrial tachyarrhythmias. We hypothesized that in the general population, the sequence of left atrial (LA) to CSM electrograms recorded in the CS reflects the direction of impulse propagation over the CSM. METHODS: We studied 19 patients with atrioventricular (AV) reentrant tachycardia (RT) utilizing a left-sided accessory pathway (AP) and 21 patients with typical counterclockwise atrial flutter (AFL)...
December 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27919764/postoperative-atrial-tachycardias-following-mitral-valve-surgery-mechanisms-and-outcomes-of-catheter-ablation
#2
Andres Enriquez, Pasquale Santangeli, Erica Zado, Jackson Liang, Simon Castro, Fermin Garcia, Robert Schaller, Gregory Supple, David Frankel, David Callans, David Lin, Sanjay Dixit, Rajat Deo, Michael Riley, Francis Marchlinski
BACKGROUND: Atrial tachycardias (ATs) including atrial fibrillation (AF) are common arrhythmias late after mitral valve (MV) surgery and their management is challenging. OBJECTIVE: To determine the electrophysiological mechanisms of ATs in patients with prior MV surgery and the long-term outcomes of catheter ablation. METHODS: We studied 67 consecutive patients (age 59.4±10.6 years, 41 male) with a history of MV surgery who presented with ATs post-operatively between 2007-2015...
December 2, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27910083/radiofrequency-catheter-ablation-of-accessory-pathways-in-patients-with-ebstein-s-anomaly-at-8-years-of-follow-up
#3
Michał Orczykowski, Paweł Derejko, Robert Bodalski, Piotr Urbanek, Joanna Zakrzewska-Koperska, Radosław Sierpiński, Katarzyna Kalin, Andrzej Hasiec, Grzegorz Warmiński, Maria Miszczak-Knecht, Katarzyna Bieganowska, Rafał Baranowski, Maria Bilińska, Elżbieta Biernacka, Piotr Hoffman, Łukasz Szumowski
BACKGROUND: Data regarding long-term follow-up of radiofrequency catheter ablation (RFCA) of accessory pathways (APs) in patients with Ebstein's anomaly (EA) are limited. The procedures are challenging due to multiple or wide APs. METHODS: Analysis was performed on clinical and periprocedural data of patients with EA referred to the centre in order to perform catheter ablation of accessory pathway (AP). The group consisted of 22 patients (female 40.9%, mean age 33...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27909539/right-ventricular-pacing-for-assessment-of-cavo-tricuspid-isthmus-block
#4
Ganesh Venkataraman Md, Marc Wish Md, Ted Friehling Md, S Adam Strickberger Md
Background: Cavo-tricuspid isthmus (CTI) dependent atrial flutter is typically treated with cardiac ablation. Standard techniques to assess CTI block after ablation can be technically challenging. Right ventricular (RV) pacing may allow for another technique to assess CTI block after ablation. Objective: The purpose of this study was to evaluate RV pacing as a method to assess CTI block after ablation of CTI dependent atrial flutter, and define endpoints of ablation using this technique. Methods: 28 patients undergoing ablation of CTI dependent atrial flutter with intact ventriculoatrial (VA) conduction were prospectively enrolled in this study and underwent the RV pacing protocol, as well as standard coronary sinus (CS) pacing techniques to assess CTI block...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909526/achieving-bidirectional-long-delays-in-pulmonary-vein-antral-lines-prior-to-bidirectional-block-in-patients-with-paroxysmal-atrial-fibrillation-the-bi-bi-technique-for-atrial-fibrillation-ablation
#5
Adel F Mina Md Facc Fhrs, Nicholas L Warnecke Pa-C
Background: Pulmonary Vein Antral isolation (PVAI) is currently the standard of care for both paroxysmal and persistent atrial fibrillation ablation. Reconnection to the pulmonary vein is the most common cause of recurrence of atrial fibrillation. Achieving the endpoint of bidirectional block (BDB) for cavotricuspid isthmus dependant flutter has improved our outcomes for atrial flutter ablation. With this we tried to achieve long delays in the pulmonary veins antral lines prior to complete isolation comparable to those delays found in patient with bidirectional block of atrial flutter lines...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909513/assessment-of-sinoatrial-node-function-in-patients-with-persistent-and-long-standing-persistent-forms-of-atrial-fibrillation-after-maze-iii-procedure-combined-with-mitral-valve-operation
#6
Kulikov Aleksei A, Bokeria Leo A
RESEARCH OBJECTIVE: Assessment of sinoatrial node function after Maze III procedure combined with a mitral valve operation. METHODS: 100 patients were included in the research with persistent and long-standing persistent forms of atrial fibrillation (AF) and need of operative treatment concerning valve disease. The following preoperative preparation methods were executed to all patients: Electrocardiogram in 12 standard assignments;Two-dimensional echocardiographic with assessment of systolic and diastolic functions of the left ventricle, size of the left atrium and grade of valve disease;Transesophageal echocardiography for exclusion of blood clots in the left atrium and left atrial appendage;Coronary angiography for exclusion of coronary heart disease;Computer tomography for examination of cardiac chambers and anatomic characteristics of pulmonary veins...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909497/persistent-atrial-fibrillation-and-atrial-flutter-complicated-by-tachycardiomyopathy-because-of-intermittent-conduction-through-accessory-pathway
#7
L Valeri, A Coppolino, G Rossetti, A Vado, G Amoroso, G Bricco, A Battisti, L Correndo, S Dogliani, A Magliarditi, D Pancaldo, M De Benedictis, A Bassignana, B Doronzo
The term tachycardiomyopathy refers to a specific form of tachycardia-related cardiomyopathy caused by supraventricular or ventricular tachyarrhytmias that are both associated with ventricular rates higher than 120 bpm. The arrhythmias which are most frequently associated with these forms of heart disease are atrial fibrillation and atrial flutter, particularly found in the elderly population. The most frequent clinical manifestation is heart failure. In this case we are reporting a clinical case of a patient that came to our attention because of an episode of heart failure associated with atrial fibrillation and atrial flutter...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909493/antiarrhythmic-effect-of-antioxidants-in-patients-with-atrial-fibrillation
#8
Rustam Khabchabov PhD, Khabchabov Rg PhD, Makhmudova Er PhD
Resume In accordance with modern concepts, one of the leading roles in the development of paroxysmal atrial fibrillation and flutter, belongs - the restructuring of the myocardium, in second place - sick sinus syndrome and in third place - the presence of accessory pathways and hormonal disorders. The development of atrial fibrillation and flutter in the structural pathology, primarily begins with of drugs if it does not work, we have to carry out ablation. Providing proper, effective and important combination therapy - is the main challenge in cardiology...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909492/a-comparison-between-dabigatran-and-warfarin-on-time-to-elective-cardioversion
#9
Amanda N Basto PharmD, Nathan P Fewel PharmD, Rajiv Gupta Md, Eileen M Stock PhD, Mia Ta PharmD
OBJECTIVE: To evaluate the use of dabigatran versus warfarin on time to elective direct current cardioversion (DCCV). METHODOLOGY: This retrospective observational study was conducted at a single Veterans Affairs hospital in the Southwestern region of the U.S. Patients with atrial fibrillation or atrial flutter who were initiated on either warfarin or dabigatran prior to DCCV were reviewed. The time to cardioversion was compared between warfarin and dabigatran, as well as costs of therapy, rescheduling rates, and adverse events...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909484/lyme-arrhythmia-in-an-avid-golfer-a-diagnostic-challenge-and-a-therapeutic-dilemma
#10
Ujjwal Rastogi, Dr Nidhi Kumars
Lyme disease is a multisystem disorder affecting dermatologic, cardiac, nervous and musculoskeletal systems. Cardiac manifestations occur in about 5% of Lyme infections and stem from the involvement of the cardiac conduction system, resulting in varying degrees of sino-atrioventricular block. Occasionally, Lyme infection may also present with myopericarditis. Unlike isolated conduction node disease, myocardial involvement presents a great diagnostic and therapeutic dilemma for the physician. We report the case of a 68 year-old male cardiologist who presented with new onset exertional dyspnea and palpitations...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27892602/the-analog-blanking-period-of-implantable-cardiac-rhythm-devices
#11
S Serge Barold, Andreas Kucher
BACKGROUND: Analog blanking periods (BP) that hold down the display of electrograms (EGM) in cardiac rhythm devices have received much less attention than the well-known digital blanking periods which do not influence the EGM display. In Biotronik devices, when a paced event initiates an analog BP in one chamber [right atrium (RA), right ventricle (RV) or left ventricle (LV)], an identical cross-chamber analog BP starts in the other 2 chambers. METHODOLOGY: All clinical observations were recorded from patients with Biotronik devices...
November 28, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27888304/the-wearable-cardioverter-defibrillator-in-a-real-world-clinical-setting-experience-in-102-consecutive-patients
#12
Julia W Erath, Mate Vamos, Abdul Sami Sirat, Stefan H Hohnloser
BACKGROUND: The wearable cardioverter-defibrillator (WCD) is used for temporary protection of patients deemed to be at high risk for sudden death (SCD) not yet meeting indications for the implantable defibrillator (ICD). OBJECTIVES: To evaluate the efficacy, safety, and compliance of/to WCD use and subsequent medium-term outcome of patients in a single-center observational study. METHODS: A total of 102 consecutive patients were fitted with the WCD from 2012 to 2015 and followed for a mean of 11 months (±8 months)...
November 25, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/27886643/cardiac-safety-of-adjuvant-non-pegylated-liposomal-doxorubicin-combined-with-cyclophosphamide-and-followed-by-paclitaxel-in-older-breast-cancer-patients
#13
Luigi Coltelli, Andrea Fontana, Sara Lucchesi, Laura Ginocchi, Guido Bocci, Mario Filidei, Marco Scalese, Giada Arrighi, Chiara Finale, Lorenzo Marcucci, Orlando Goletti, Barbara Salvadori, Ilaria Ferrarini, Eleonora Bona, Alfredo Falcone, Giacomo Allegrini
PURPOSE: To investigate the cardiac safety of adjuvant Non-Pegylated Liposomal Doxorubicin (NPL-DOX) combined to Cyclophosphamide (CTX) and followed by weekly Paclitaxel, in older patients (≥65 years) with diagnosis of high risk breast cancer. The main end point of this prospective study was the detection of early episodes of symptomatic congestive heart failure (CHF). METHODS: The cardiac function was evaluated by left ventricular ejection fraction (LVEF) measurements with repeated echocardiograms, performed 2 weeks before the beginning of chemotherapy and every 6 months, until 30 months after the study entry; then yearly for at least 5 years...
November 22, 2016: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/27878420/a-5-year-clinical-follow-up-after-duty-cycled-phased-rf-ablation-of-paroxysmal-atrial-fibrillation
#14
Antoine Lepillier, Xavier Copie, Gilles Lascault, Olivier Paziaud, Olivier Piot
PURPOSE: Catheter radiofrequency ablation (RFA) is an effective treatment for symptomatic paroxysmal atrial fibrillation (AF). It has been demonstrated that the multielectrode pulmonary vein ablation catheter (PVAC) has favourable outcomes at 6-12 months post-ablation, but there are only few studies with a long-term follow-up. METHODS: We retrospectively reviewed 77 consecutive PVAC procedures in our centre, from November 2007 to December 2012. RFA was attempted in patients with symptomatic paroxysmal AF (mean age 58...
November 22, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27868213/characteristics-and-outcomes-of-concurrently-diagnosed-new-rapid-atrial-fibrillation-or-flutter-and-new-reduced-ejection-fraction
#15
Yasser Rodriguez, Andrew D Althouse, Evan C Adelstein, Sandeep K Jain, G Stuart Mendenhall, Samir Saba, Alaa A Shalaby, Andrew H Voigt, Norman C Wang
BACKGROUND: Characteristics and outcomes of concurrently diagnosed new rapid atrial fibrillation (AF) or flutter (AFL) and new heart failure with reduced left ventricular ejection fraction (LVEF) are not well described. METHODS: A retrospective cohort study of subjects referred for expedited transesophageal echocardiography (TEE)-guided rhythm-control strategies for concurrent new AF/AFL and new LVEF ≤40% diagnosed during the same admission was analyzed. RESULTS: Twenty-five subjects (median age 57 years; 96% male; 100% Caucasian; median CHA2 DS2 -VASc = 2) presented with new AF (n = 18) or AFL (n = 7) with rapid ventricular rate (median 135 beats per minute) and new reduced LVEF (median 27%; range, 10%-37...
November 21, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27865189/screening-entire-healthcare-system-ecg-database-association-of-deep-terminal-negativity-of-p-wave-in-lead-v1-and-ecg-referral-with-mortality
#16
Allison Junell, Jason Thomas, Lauren Hawkins, Jiri Sklenar, Trevor Feldman, Charles A Henrikson, Larisa G Tereshchenko
BACKGROUND: Each encounter of asymptomatic individuals with the healthcare system presents an opportunity for improvement of cardiovascular disease (CVD) awareness and sudden cardiac death (SCD) risk assessment. ECG sign deep terminal negativity of the P wave in V1 (DTNPV1) was shown to be associated with an increased risk of SCD in the general population. OBJECTIVE: To evaluate association of DTNPV1 with all-cause mortality and newly diagnosed atrial fibrillation (AFib) in the large tertiary healthcare system patient population...
November 10, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27864249/positive-predictive-value-of-cardiovascular-diagnoses-in-the-danish-national-patient-registry-a-validation-study
#17
Jens Sundbøll, Kasper Adelborg, Troels Munch, Trine Frøslev, Henrik Toft Sørensen, Hans Erik Bøtker, Morten Schmidt
OBJECTIVE: The majority of cardiovascular diagnoses in the Danish National Patient Registry (DNPR) remain to be validated despite extensive use in epidemiological research. We therefore examined the positive predictive value (PPV) of cardiovascular diagnoses in the DNPR. DESIGN: Population-based validation study. SETTING: 1 university hospital and 2 regional hospitals in the Central Denmark Region, 2010-2012. PARTICIPANTS: For each cardiovascular diagnosis, up to 100 patients from participating hospitals were randomly sampled during the study period using the DNPR...
November 18, 2016: BMJ Open
https://www.readbyqxmd.com/read/27836133/impact-of-baseline-stroke-risk-and-bleeding-risk-on-warfarin-international-normalized-ratio-control-in-atrial-fibrillation-from-the-treat-af-study
#18
Jessica A Hellyer, Farnaz Azarbal, Claire T Than, Jun Fan, Susan K Schmitt, Felix Yang, Susan M Frayne, Ciaran S Phibbs, Celina Yong, Paul A Heidenreich, Mintu P Turakhia
Warfarin prevents stroke and prolongs survival in patients with atrial fibrillation and flutter (AF, collectively) but can cause hemorrhage. The time in international normalized ratio (INR) therapeutic range (TTR) mediates stroke reduction and bleeding risk. This study sought to determine the relation between baseline stroke, bleeding risk, and TTR. Using data from The Retrospective Evaluation and Assessment of Therapies in Atrial Fibrillation (TREAT-AF) retrospective cohort study, national Veterans Health Administration records were used to identify patients with newly diagnosed AF from 2003 to 2012 and subsequent initiation of warfarin...
October 8, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27832399/ablation-of-atypical-atrial-flutters-using-ultra-high-density-activation-sequence-mapping
#19
Roger A Winkle, Ryan Moskovitz, R Hardwin Mead, Gregory Engel, Melissa H Kong, William Fleming, Rob A Patrawala
PURPOSE: The purpose of this study was to evaluate ultra high density-activation sequence mapping (UHD-ASM) for ablating atypical atrial flutters. METHODS: For 23 patients with 31 atypical atrial flutters (AAF), we created UHD-ASM. RESULTS: Demographics age = 65.3 ± 8.5 years, male = 78%, left atrial size = 4.66 ± 0.64 cm, redo ablation 20/23(87%). AAF were left atrial in 30 (97%). For each AAF, 1273 ± 697 points were used for UHD-ASM...
November 10, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27826985/impact-of-cavotricuspid-isthmus-morphology-in-cryo-vs-radiofrequency-ablation-of-typical-atrial-flutter
#20
Serkan Saygi, Hamid Bastani, Nikola Drca, Per Insulander, Christer Wredlert, Jonas Schwieler, Mats Jensen-Urstad
OBJECTIVES: Cryoablation (CRYO) is an alternative to radiofrequency (RF) for catheter ablation of cavotricuspid isthmus (CTI) dependent atrial flutter (AFL). We aimed to study whether different CTI morphologies had different impacts on procedural success for CRYO and RF. DESIGN: This study randomized 153 patients with CTI-dependent AFL (median age 65 years; range 34-82) to RF or CRYO (78 CRYO; 75 RF). Biplane angiography (RAO 30º and LAO 60º) was done before the ablation procedure and isthmuses were classified as straight (n = 81), concave (n = 43), or pouch-like (n = 29)...
November 9, 2016: Scandinavian Cardiovascular Journal: SCJ
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