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https://www.readbyqxmd.com/read/28870877/very-low-pacemaker-rate-following-acurate-neo-transcatheter-heart-valve-implantation
#1
Stefan Toggweiler, Henrik Nissen, Brynjolfur Mogensen, Florim Cuculi, Christian Fallesen, Karsten Tange Veien, Miriam Brinkert, Richard Kobza, Andreas Rück
AIMS: Investigate if minimizing trauma to the aortic annulus and left ventricular outflow tract reduces the occurrence of new conduction disorders and need for permanent pacemakers. METHODS AND RESULTS: A total of 175 patients (58% women, mean age 83 ± 6 years) underwent transfemoral TAVI with the Boston Scientific ACURATE neo at three centers in Europe. Prosthesis size selection was based on perimeter derived annular diameter. Predilatation was performed in all with a balloon 1...
September 5, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28867191/aging-related-mitochondrial-dysfunction-facilitates-the-occurrence-of-serious-arrhythmia-after-myocardial-infarction
#2
Florian Stöckigt, Thomas Beiert, Vincent Knappe, Olivier R Baris, Rudolf J Wiesner, Christoph S Clemen, Georg Nickenig, René P Andrié, Jan W Schrickel
BACKGROUND: During aging a mosaic of normal cells and cells with mitochondrial deficiency develops in various tissues including the heart. Whether this contributes to higher susceptibility for arrhythmia following myocardial infarction (MI) is unknown. METHODS AND RESULTS: Myocardial cryoinfarction was performed in 12-month-old transgenic mice with accelerated accumulation of deletions in mitochondrial DNA. Occurrence and pathogenesis of arrhythmia was investigated after two weeks...
September 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28840364/perservative-paroxysmal-atrioventricular-block-cardiac-syncope-misdiagnosed-as-anxiety-for-more-than-20%C3%A2-years
#3
Sona Tribunyan, Carsten W Israel, Mihran Martirosyan
A 42-year-old woman was referred for cardiac diagnostic work-up of loss of recurrent consciousness over the past 25 years. She received medication with an anxiolytic, an antidepressant, and a neuroleptic drug. After a normal resting ECG, there were 112 episodes of paroxysmal atrioventricular block III° in her 24 h Holter recording with asystole for up to 27 s. The patient was symptomatic only once with dizziness due to an asystole of 8.8 s while she was awake in the early morning. After DDDR pacemaker implantation, the patient was asymptomatic during the following 2 years...
August 24, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28826988/transapical-transcatheter-aortic-valve-implantation-using-a-new-tavi-system-for-high-risk-patients-with-severe-aortic-stenosis
#4
Xu Fei, Yacine Elhmidi, Bengui Zhang, Hong Tang, Da Zhu, Yucheng Chen, Yingqiang Guo
BACKGROUND: To evaluate the safety and efficacy of transcatheter aortic valve implantation (TAVI) for high-risk patients with aortic stenosis using the J-Valve system. METHODS: 30 high-risk patients with severe AS underwent TAVI procedure were enrolled with mean age 74.5±4.5 years and mean logistic Euro-SCORE-I of 28.4±9.6%. All patients were followed up for six months. Outcomes were analyzed in accordance with the updated standardised endpoints defined by the Valve Academic Research Consortium -2 (VRAC-2) criteria...
August 8, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28818562/conduction-recovery-and-avoidance-of-permanent-pacing-after-transcatheter-aortic-valve-implantation
#5
Corinne Marzahn, Cornel Koban, Martin Seifert, Akihiro Isotani, Michael Neuß, Frank Hölschermann, Christian Butter
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is an established treatment option for patients with severe aortic stenosis and high surgical risk. Currently, various prosthesis types are available. Atrioventricular block (AVB) requiring pacemaker (PM) implantation is a typical complication after TAVI. This study investigated the recovery of AV node conduction and mid-term outcome of patients with or without PM implantation after TAVI according to prosthesis type. METHODS: From July 2008 to May 2015, 856 transcatheter heart valves were implanted at our center (age: 80...
August 14, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28807663/incidence-and-predictors-of-late-atrioventricular-conduction-recovery-among-patients-requiring-permanent-pacemaker-for-complete-heart-block-after-cardiac-surgery
#6
Erich L Kiehl, Tarek Makki, Ralph M Matar, Douglas R Johnston, John W Rickard, Khaldoun G Tarakji, Mohamed Kanj, Oussama M Wazni, Walid I Saliba, Niraj Varma, Bruce L Wilkoff, Daniel J Cantillon
BACKGROUND: New-onset complete heart block (CHB) commonly complicates cardiac surgery, for which some patients require a permanent pacemaker (PPM). Little is known regarding late atrioventricular (AV) conduction recovery. OBJECTIVE: The purpose of this study was to characterize the incidence and predictors of late AV conduction recovery among patients requiring PPM after cardiac surgery. METHODS: Consecutive patients receiving PPM for CHB after cardiac surgery at a high-volume U...
August 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28805027/acute-and-midterm-results-following-perventricular-device-closure-of-muscular-ventricular-septal-defects-a-multicenter-pices-investigation
#7
Robert G Gray, Shaji C Menon, Joyce T Johnson, Aimee K Armstrong, Michael A Bingler, John P Breinholt, Damien Kenny, John Lozier, Joshua J Murphy, Shyam K Sathanandam, Nathaniel W Taggart, Sara M Trucco, Bryan H Goldstein, Brent M Gordon
OBJECTIVES: To describe acute and mid-term results of hybrid perventricular device closure of muscular ventricular septal defects (mVSDs). BACKGROUND: Perventricular device closure of mVSDs can mitigate technical limitations of percutaneous closure and need for cardiopulmonary bypass or ventriculotomy with a surgical approach. METHODS: This is a multicenter retrospective cohort study of patients undergoing hybrid perventricular mVSD device closure from 1/2004 to 1/2014...
August 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28802655/alternating-trifascicular-block-and-cardiac-memory
#8
Asaf Danon, Mohammed Shurrab
We describe a case of a 70year-old woman with effort dyspnea and alternating trifascicular conduction pattern, worsened with exercise to atrioventricular block (AV Block). The alternating conduction at rest resulted in marked T wave changes. We discuss the mechanism of T wave memory changes and the management of exercise-induced AV Block.
July 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28765763/elongated-ascending-aorta-predicts-a-short-distance-between-his-bundle-potential-recording-site-and-coronary-sinus-ostium
#9
Yuichi Momose, Kyoko Soejima, Akiko Ueda, Takahiro Arai, Masamichi Koyanagi, Yo Hagiwara, Ikuko Togashi, Yosuke Miwa, Kyoko Hoshida, Mutsumi Miyakoshi, Noriko Matsushita, Mika Nagaoka, Toshiaki Sato, Toshiaki Nitatori, Hideaki Yoshino
BACKGROUND: When performing catheter ablation of atrioventricular nodal reentrant tachycardia (AVNRT), it can be difficult to maintain a safe distance from the His recording site to avoid AV block in patients with a short distance between this recording site to the coronary sinus (CS) ostium (small triangle of Koch [TOK]). In this study, we sought to identify parameters predicting small TOK and test these parameters in patients undergoing AVNRT catheter ablation. METHODS: Twenty-eight patients who underwent catheter ablation of atrial fibrillation using a three-dimensional (3D) electroanatomical mapping system (EAM) with computed tomography (CT) merge (23 males; mean age, 65...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28765761/simulation-of-ventricular-rate-control-during-atrial-fibrillation-using-ionic-channel-blockers
#10
Shin Inada, Nitaro Shibata Md PhD, Michiaki Iwata PhD, Ryo Haraguchi PhD, Takashi Ashihara Md PhD, Takanori Ikeda Md PhD, Kazuyuki Mitsui PhD, Halina Dobrzynski PhD, Mark R Boyett PhD, Kazuo Nakazawa PhD
BACKGROUND: The atrioventricular (AV) node is the only compartment that conducts an electrical impulse between the atria and the ventricles. The main role of the AV node is to facilitate efficient pumping by conducting excitation slowly between the two chambers as well as reduce the ventricular rate during atrial fibrillation (AF). METHODS: Using computer simulations, we investigated excitation conduction from the right atrium to the bundle of His during high-rate atrial excitation with or without partial blocking of the calcium or potassium ionic current...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28765737/local-atrial-ventricular-ratio-as-an-adjuvant-marker-for-catheter-ablation-of-atrioventricular-accessory-pathways
#11
Ki-Hun Kim, Dae-Kyeong Kim, Hyun-Ji Im, Jeong-Sook Seo, Han-Young Jin, Jae-Sik Jang, Tae-Hyun Yang, Dong-Soo Kim, So-Young Jeong, Yun Seok Song, Dong-Kie Kim, Pil-Sang Song, Sang-Hoon Seol, Doo-Il Kim
BACKGROUND AND OBJECTIVES: The earliest atrial (A)/ventricular (V) activation potential, or accessory pathway (AP) potential are commonly used as ablation targets for atrioventricular (AV) APs. However, these targets are sometimes ambiguous. SUBJECTS AND METHODS: We reviewed 119 catheter ablation cases in 112 patients diagnosed with orthodromic atrioventricular reentrant tachycardia (AVRT) or Wolff-Parkinson-White (WPW) syndrome. Local A/V amplitude potentials with the earliest activation or AP potential were measured shortly before achieving antegrade AP conduction block, ventriculoatrial block during right ventricle (RV) pacing, or AVRT termination with no AP conduction...
July 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28759818/histological-topography-of-the-atrioventricular-node-and-its-extensions-in-relation-to-the-cardiothoracic-surgical-landmarks-in-normal-human-hearts
#12
Arpandeep Randhawa, Tulika Gupta, Anjali Aggarwal, Daisy Sahni, Rana Sandip Singh
BACKGROUND: Atrioventricular (AV) nodal injury which results in cardiac conduction disorders is one of the potential complications of heart valve surgeries and radiofrequency catheter ablations. Understanding the topography of the AV conduction system in relation to the tricuspid and mitral valves will help in reducing these complications. METHODS: A tissue block of 3cmx4cm, which contain the AV node, bundle of His and the AV nodal extensions, was excised at the AV septal junction in 20 apparently normal human hearts...
September 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28758988/beneficial-effects-of-galectin-3-blockade-in-vascular-and-aortic-valve-alterations-in-an-experimental-pressure-overload-model
#13
Jaime Ibarrola, Ernesto Martínez-Martínez, J Rafael Sádaba, Vanessa Arrieta, Amaia García-Peña, Virginia Álvarez, Amaya Fernández-Celis, Alicia Gainza, Patrick Rossignol, Victoria Cachofeiro Ramos, Natalia López-Andrés
Galectin-3 (Gal-3) is involved in cardiovascular fibrosis and aortic valve (AV) calcification. We hypothesized that Gal-3 pharmacological inhibition with modified citrus pectin (MCP) could reduce aortic and AV remodeling in normotensive rats with pressure overload (PO). Six weeks after aortic constriction, vascular Gal-3 expression was up-regulated in male Wistar rats. Gal-3 overexpression was accompanied by an increase in the aortic media layer thickness, enhanced total collagen, and augmented expression of fibrotic mediators...
July 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28755092/pediatric-dosing-of-intravenous-sotalol-based-on-body-surface-area-in-patients-with-arrhythmia
#14
Xiaomei Li, Yan Zhang, Haiju Liu, He Jiang, Haiyan Ge, Yi Zhang
In a recently published study, we evaluated the efficacy and safety of intravenous sotalol in pediatric patients with incessant tachyarrhythmias and we have found that intravenous sotalol is effective and safe. Our dosing regimen was based on the body weight of the patients. In the US, the recommendation for intravenous sotalol dosing in pediatric patients is based on body surface area (BSA) while taking into consideration the patients' age. The purpose of this paper is to show the correspondence of a body weight-based dosing regimen when expressed for BSA as mg/m(2)...
July 28, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28728260/-clinical-analysis-of-pacing-therapy-and-treatment-of-complications-during-follow-up-in-children
#15
P J Zhao, Y W Chen, F Li, Y Li, J P Yang, J J Wu
Objective: To analyze characteristics of permanent pacemaker implantation in children as well as treatment and prognosis of complications. Method: Clinical data of children who underwent endocardial or epicardial permanent pacemaker implantation between April 2000 and June 2016 in Shanghai Xinhua Hospital and Shanghai Children's Medical Center were analyzed retrospectively. These patients were discharged 5 days after implantation. Electrocardiogram, chest X ray, echocardiography and pacemaker programming were performed during follow-up...
July 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28725329/ticagrelor-associated-conduction-disorder-a-case-report-and-review-of-the-literature
#16
Mustafa Yurtdas, Mahmut Ozdemir
A 47-year-old female presented to emergency clinic due to non-ST-elevation myocardial infarction (NSTEMI). After receiving acetylsalicylic acid, a loading dose of ticagrelor 180 mg and intravenous unfractionated heparin, she underwent successful placement of drug eluting stent on the distal part of non-dominant left circumflex artery. The patient had no pre-existing atrioventricular (AV) block and did not use AV blocking agent. Approximately 10 h after taking a loading dose of ticagrelor, baseline normal rhythm degenerated to the first and then complete AV block, with mild dizziness...
June 2017: Cardiology Research
https://www.readbyqxmd.com/read/28713599/lyme-carditis-buried-beneath-st-segment-elevations
#17
Basia Michalski, Adrian Umpierrez De Reguero
Lyme disease is caused by the spirochete Borrelia burgdorferi and is carried to human hosts by infected ticks. There are nearly 30,000 cases of Lyme disease reported to the CDC each year, with 3-4% of those cases reporting Lyme carditis. The most common manifestation of Lyme carditis is partial heart block following bacterial-induced inflammation of the conducting nodes. Here we report a 45-year-old gentleman that presented to the hospital with intense nonradiating chest pressure and tightness. Lab studies were remarkable for elevated troponins...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28708290/rationale-and-design-of-the-adaptresponse-trial-a-prospective-randomized-study-of-cardiac-resynchronization-therapy-with-preferential-adaptive-left-ventricular-only-pacing
#18
Gerasimos Filippatos, David Birnie, Michael R Gold, Bart Gerritse, Ahmad Hersi, Sandra Jacobs, Kengo Kusano, Christophe Leclercq, Wilfried Mullens, Bruce L Wilkoff
The AdaptResponse trial is designed to test the hypothesis that preferential adaptive left ventricular-only pacing with the AdaptivCRT(®) algorithm reduces the incidence of the combined endpoint of all-cause mortality and intervention for heart failure (HF) decompensation, compared with conventional cardiac resynchronization therapy (CRT), among patients with a CRT indication, left bundle branch block (LBBB) and normal atrioventricular (AV) conduction. The AdaptResponse study is a prospective, randomized, controlled, single-blinded, multicentre, clinical trial (ClinicalTrials...
July 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28705319/connexin-45-as-a-new-gene-underlying-syndromic-av-block
#19
EDITORIAL
Patrick T Ellinor, Heather S Jameson
No abstract text is available yet for this article.
July 18, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28705318/progressive-atrial-conduction-defects-associated-with-bone-malformation-caused-by-a-connexin-45-mutation
#20
Akiko Seki, Taisuke Ishikawa, Xavier Daumy, Hiroyuki Mishima, Julien Barc, Ryo Sasaki, Kiyomasa Nishii, Kayoko Saito, Mari Urano, Seiko Ohno, Saki Otsuki, Hiroki Kimoto, Alban-Elouen Baruteau, Aurelie Thollet, Swanny Fouchard, Stéphanie Bonnaud, Philippe Parent, Yosaburo Shibata, Jean-Philippe Perrin, Hervé Le Marec, Nobuhisa Hagiwara, Sandra Mercier, Minoru Horie, Vincent Probst, Koh-Ichiro Yoshiura, Richard Redon, Jean-Jacques Schott, Naomasa Makita
BACKGROUND: Inherited cardiac conduction disease is a rare bradyarrhythmia associated with mutations in various genes that affect action potential propagation. It is often characterized by isolated conduction disturbance of the His-Purkinje system, but it is rarely described as a syndromic form. OBJECTIVES: The authors sought to identify the genetic defect in families with a novel bradyarrhythmia syndrome associated with bone malformation. METHODS: The authors genetically screened 15 European cases with genotype-negative de novo atrioventricular (AV) block and their parents by trio whole-exome sequencing, plus 31 Japanese cases with genotype-negative familial AV block or sick sinus syndrome by targeted exon sequencing of 457 susceptibility genes...
July 18, 2017: Journal of the American College of Cardiology
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