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Atrioventricular block

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https://www.readbyqxmd.com/read/29350247/prolonged-pr-interval-at-birth-predicting-the-high-occurrence-of-fatal-atrioventricular-block-in-hypoplastic-left-heart-syndrome
#1
Eiji Morihana, Kenichiro Yamamura, Yuichiro Sugitani, Hideaki Kado, Yasushi Takahata, Toshihide Nakano, Yasutaka Nakashima, Naoki Fusazaki, Shouichi Ohga
Infants with hypoplastic left heart syndrome (HLHS) are at high mortality especially when they are associated with bradyarrhythmias. However, the risk factor of developing high-grade atrioventricular block (HAVB) is still unclear. Seventy-three patients with HLHS in our institutions from 2002 to 2011 were enrolled. The survival rate was assessed by the anatomical types, treatments, occurrence of HAVB, severe tricuspid regurgitation (TR), and restrictive atrial septal defect (ASD) along with electrocardiogram findings at birth...
January 19, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29344737/the-125th-anniversary-of-the-his-bundle-discovery
#2
REVIEW
Georg H von Knorre
In 1893, Wilhelm His Jr. was the first to describe the AV (atrioventricular) bundle of the vertebrate heart, which now bears his name. Moreover, prior to the turn of the century, W. His Jr. had proved the function of the AV bundle by transection experiments in animals, and had interpreted Adams Stokes disease as heart block due to pathological changes within the bundle. In this way, he was ahead of his time. While clinical interest was limited to the bundle as the location of an AV block in the first half of the 125 years, it has gained attractiveness since then as a target of diagnostic and therapeutic procedures...
January 17, 2018: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29344447/successful-management-of-right-ventricular-perforation-associated-with-a-pacemaker-lead-during-off-pump-cabg-surgery-a-case-report
#3
Masoud Tarbiat, Mohammad Hossein Bakhshaei, Mehdi Moradi
Introduction: Intraoperative right ventricular perforation due to pacing catheter after its successful and uneventful insertion is a rare complication. Here, we present a case of cardiac arrest due to right ventricular perforation associated with a pacemaker lead during off-pump coronary artery bypass graft surgery. Case Presentation: The case was a 68-year-old male, who was admitted to our hospital with retrosternal chest pain. He had a history of implantation of a permanent pacemaker due to symptomatic complete atrioventricular block...
August 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/29340988/interventricular-septum-involvement-with-complete-atrioventricular-block-as-first-manifestation-in-takayasu-arteritis
#4
Gabriela Meléndez-Ramírez, Rafael Vera-Urquiza, María Elena Soto
No abstract text is available yet for this article.
January 16, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29328513/-wide-qrs-complex-tachycardia-followed-by-2-1-atrioventricular-block-what-is-the-mechanism
#5
Jesús Jiménez-López, Ermengol Vallès, Begoña Benito Villabriga, Oscar Alcalde, Sandra Cabrera, Julio Martí-Almor
No abstract text is available yet for this article.
January 12, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29325979/an-unusual-case-of-complete-atrioventricular-block-causing-takotsubo-syndrome
#6
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 8, 2018: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29325364/-the-efficacy-and-safety-of-coil-embolization-of-septal-branch-in-the-treatment-of-patients-with-obstructive-hypertrophic-cardiomyopathy
#7
H Liu, Q Wu, H W Tan, J Pang
Objective: To observe the clinical efficacy and safety of coil embolization of septal branch in the treatment of obstructive hypertrophic cardiomyopathy (HOCM). Methods: Eighteen patients with HOCM hospitalized in our department from September 2014 to October 2016 were enrolled in this study. There were 12 males and 6 females in this cohort and the age of patients ranged from 22 to 64 years old. Left ventricular outflow tract gradient (LVOTG) was derived from echocardiographic apical five-chamber view at pre-operation and at 48 hours and 6 months post operation...
December 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29322518/pediatric-heart-transplantation-what-are-the-risk-factors-for-pacemaker-implantation-and-how-much-pacing-is-required
#8
Florian Ernst Martin Herrmann, Petra Wellmann, Christian Hagl, Gerd Juchem
BACKGROUND: In an attempt to improve pacemaker therapy after pediatric transplantation we investigated risk factors, indication for pacing and pacing burden after pediatric heart transplantation. METHODS AND RESULTS: In this retrospective study 139 pediatric heart transplant recipients of which 122 did not and 17 did require pacemakers were investigated. Eleven of the 17 patients requiring a permanent pacemaker (PPM) received their heart from a female donor (68...
January 11, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29318633/long-term-outcomes-following-cryoablation-of-atrioventricular-nodal-reentrant-tachycardia-in-children
#9
Mehmet Karacan, Nida Çelik, Celal Akdeniz, Volkan Tuzcu
BACKGROUND: Atrioventricular nodal reentrant tachycardia (AVNRT) is a common tachyarrhythmia substrate in children, which is successfully treated by catheter ablation using radiofrequency or cryothermal energy. In recent years, cryoablation (Cryo) using electroanatomical system guidance is more commonly preferred for use in children in order to decrease the risk of an atrioventricular block. However, there are concerns regarding the long-term efficacy of Cryo in treating AVNRT. We aimed to evaluate the feasibility, safety, and long-term efficacy of Cryo for AVNRT in children...
January 9, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29306897/critical-roles-of-xirp-proteins-in-cardiac-conduction-and-their-rare-variants-identified-in-sudden-unexplained-nocturnal-death-syndrome-and-brugada-syndrome-in-chinese-han-population
#10
Lei Huang, Kuo-Ho Wu, Liyong Zhang, Qinchuan Wang, Shuangbo Tang, Qiuping Wu, Pei-Hsiu Jiang, Jim Jung-Ching Lin, Jian Guo, Lin Wang, Shih-Hurng Loh, Jianding Cheng
BACKGROUND: Sudden unexplained nocturnal death syndrome (SUNDS) remains an autopsy negative entity with unclear etiology. Arrhythmia has been implicated in SUNDS. Mutations/deficiencies in intercalated disc components have been shown to cause arrhythmias. Human cardiomyopathy-associated 1 (XIRP1) and 3 (XIRP2) are intercalated disc-associated, Xin repeats-containing proteins. Mouse Xirp1 is necessary for the integrity of intercalated disc and for the surface expression of transient outward and delayed rectifier K+ channels, whereas mouse Xirp2 is required for Xirp1 intercalated disc localization...
January 6, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29306645/transvenous-pacemaker-placement-left-lateral-decubitus-position-and-wireless-digital-radiography
#11
J S Broder, J M Silver, C E Fischetti
A patient presented with symptomatic third degree atrioventricular block requiring emergency transvenous pacemaker placement. During the procedure, wireless digital radiographs tracked the position of the pacemaker electrode, which repeatedly missed the target right ventricle. The patient was then rolled to left lateral decubitus position and the electrode was advanced into the right ventricle, achieving electrical capture, hemodynamic stability, and symptom resolution. We review the published literature on transvenous pacemaker placement and identify two innovations: left lateral decubitus position to facilitate catheter placement and wireless digital radiography for procedure guidance...
December 1, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29302939/transcatheter-aortic-valve-implantation-in-high-risk-inoperable-patients-repositionable-versus-non-repositionable-self-expanding-valve
#12
Verena Veulemans, Dagmar B Sötemann, Laura Kleinebrecht, Stefanie Keymel, Christian Jung, Tobias Zeus, Malte Kelm, Ralf Westenfeld
BACKGROUND: Although next-generation cardiac prostheses have shown favorable results in transcatheter aortic valve implantation (TAVI), these have mostly been documented in intermediate-risk patients. Whether this could be translated to high-risk patients is not known. Hence, the safety and clinical performance of the new, repositionable CoreValve Evolut R-System (ERS) was evaluated by comparison with a non-repositionable CoreValve-System (CVS), in 96 high-risk/inoperable (HRI) patients...
July 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29302263/radiofrequency-catheter-ablation-of-atrioventricular-nodal-reentry-tachycardia-in-children-and-adolescents-a-single-center-experience
#13
Myung Chul Hyun
Purpose: Atrioventricular nodal reentry tachycardia (AVNRT) is less common in pediatric patients than in adult patients. Thus, data for pediatric AVNRT patients are insufficient. Hence, we aimed to analyze the patient characteristics, treatment, and any recurrences in pediatric AVNRT patients. Methods: We reviewed the records of 50 pediatric AVNRT patients who had undergone radiofrequency catheter ablation (RFCA) between January 1998 and December 2016 at a single regional center...
December 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29288034/structural-and-functional-remodelling-of-the-atrioventricular-node-with-ageing-in-rats-the-role-of-hyperpolarization-activated-cyclic-nucleotide-gated-and-ryanodine-2-channels
#14
Yawer Saeed, Ian Temple, Zoltan Borbas, Andrew Atkinson, Joseph Yanni, Michal Maczewski, Urszula Mackiewicz, Mariam Aly, Sunil J R J Logantha, Clifford Garratt, Halina Dobrzynski
BACKGROUND: Ageing is associated with an increased incidence of atrioventricular nodal (AVN) dysfunction. OBJECTIVES: The aim of the study is to identify the structural and functional remodelling in the atrioventricular junction (AVJ) with ageing. METHODS: Electrophysiological, histology and immunohistochemistry experiments on male Wistar-Hanover rats aged 3months (n=24) and 2years (n=15) were performed. AH interval, Wenkebach cycle length (WBCL) and AVN effective refractory period (AVNERP) were measured...
December 26, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29280096/management-of-bradyarrhythmias-in-heart-failure-a-tailored-approach
#15
Daniele Masarone, Ernesto Ammendola, Anna Rago, Rita Gravino, Gemma Salerno, Marta Rubino, Tommaso Marrazzo, Antonio Molino, Paolo Calabrò, Giuseppe Pacileo, Giuseppe Limongelli
Patients with heart failure (HF) may develop a range of bradyarrhythmias including sinus node dysfunction, various degrees of atrioventricular block, and ventricular conduction delay. Device implantation has been recommended in these patients, but the specific etiology should be sought as it may influence the choice of the type of device required (pacemaker vs. implantable cardiac defibrillator). Also, pacing mode must be carefully set in patients with heart failure (HF) and left ventricular systolic dysfunction...
December 27, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29277685/cardiac-rhythm-and-pacemaking-abnormalities-in-patients-affected-by-endemic-pemphigus-in-colombia-may-be-a-result-of-deposition-of-autoantibodies-complement-fibrinogen-and-other-molecules
#16
Ana Maria Abreu Velez, Michael S Howard, Jorge Enrique Velazquez-Velez
BACKGROUND: We showed that one third of the patients affected by endemic pemphigus foliaceus in El Bagre, Colombia (El Bagre-EPF) display autoreactivity to the heart. OBJECTIVE: We aim to investigate rhythm disturbances with presence of autoantibodies and correlate them with electrocardiographic changes in these patients. METHODS: We performed a study comparing 30 patients and 30 controls from the endemic area, matched by demographics including age, sex and weight; work activities, comorbidities, among other variables...
December 22, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29275956/lyme-carditis-early-occurrence-and-prolonged-recovery
#17
Jianwei Fu Md, Luna Bhatta
Lyme carditis is an uncommon manifestation of early disseminated Lyme disease. This case illustrates a 66-year-old male with complaints of fatigue, myalgias, and fever after a tick bite 3days earlier. A large erythema migrans was found on the chest wall. Initial electrocardiogram showed sinus rhythm with second degree 2:1 atrioventricular (AV) block, which progressed to intermittent complete AV block rapidly. He was treated with intravenous ceftriaxone. Over the course of 2-weeks of antibiotic therapy, the intermittent high-grade AV block improved slowly and progressively...
December 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29275946/ecg-predictors-of-cardiac-arrhythmias-in-older-adults-with-syncope
#18
Daniel K Nishijima, Amber L Lin, Robert E Weiss, Annick N Yagapen, Susan E Malveau, David H Adler, Aveh Bastani, Christopher W Baugh, Jeffrey M Caterino, Carol L Clark, Deborah B Diercks, Judd E Hollander, Bret A Nicks, Manish N Shah, Kirk A Stiffler, Alan B Storrow, Scott T Wilber, Benjamin C Sun
STUDY OBJECTIVE: Cardiac arrhythmia is a life-threatening condition in older adults who present to the emergency department (ED) with syncope. Previous work suggests the initial ED ECG can predict arrhythmia risk; however, specific ECG predictors have been variably specified. Our objective is to identify specific ECG abnormalities predictive of 30-day serious cardiac arrhythmias in older adults presenting to the ED with syncope. METHODS: We conducted a prospective, observational study at 11 EDs in adults aged 60 years or older who presented with syncope or near syncope...
December 21, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/29275944/electrocardiographic-patterns-and-long-term-training-induced-time-changes-in-2484-elite-football-players
#19
Olivier Huttin, Christine Selton-Suty, Clément Venner, Jean-Baptiste Vilain, Pierre Rochecongar, Etienne Aliot
BACKGROUND: High-level physical training induces cardiac structural and functional changes, including 12-lead electrocardiogram modifications. OBJECTIVES: The purpose of this cross-sectional longitudinal study was to establish a quantitative electrocardiographic profile in highly trained football players. Initial and serial annual electrocardiogram monitoring over subsequent years allowed us to investigate the long-term effects of exercise on cardiac conduction and electrophysiological remodelling...
December 21, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29274115/a-novel-desmin-des-indel-mutation-causes-severe-atypical-cardiomyopathy-in-combination-with-atrioventricular-block-and-skeletal-myopathy
#20
Ilona Schirmer, Mareike Dieding, Bärbel Klauke, Andreas Brodehl, Anna Gaertner-Rommel, Volker Walhorn, Jan Gummert, Uwe Schulz, Lech Paluszkiewicz, Dario Anselmetti, Hendrik Milting
BACKGROUND: DES mutations cause different cardiac and skeletal myopathies. Most of them are missense mutations. METHODS: Using a next-generation sequencing cardiac 174 gene panel, we identified a novel heterozygous in-frame indel mutation (DES-c.493_520del28insGCGT, p.Q165_A174delinsAS) in a Caucasian patient with cardiomyopathy in combination with atrioventricular block and skeletal myopathy. This indel mutation is located in the coding region of the first exon...
December 23, 2017: Molecular Genetics & Genomic Medicine
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