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Atrioventricular block

Meki Bilici, Fikri Demir, Murat Muhtar Yılmazer, Fatma Bozkurt, Volkan Tuzcu
BACKGROUND: The clinical spectrum of Brucella infection is quite diverse and characterized by multi-system involvement. Patients present with myocarditis, endocarditis, or pericarditis. Infective endocarditis is the most common cardiovascular complication in patients with brucellosis. Although conduction abnormalities are seen in cases with endocarditis, they are reported very rarely in the setting of cardiac Brucella infection. CASE REPORT: An eight and a half-year-old male patient was referred to our clinic due to inadequate response to cotrimaxazole plus streptomycin treatment at the 15th day of admission...
September 2016: Balkan Medical Journal
Pedro Pallangyo, Isaac Mawenya, Paulina Nicholaus, Henry Mayala, Amida Kalombola, Godwin Sharau, Naiz Majani, Mohamed Janabi
BACKGROUND: Congenital complete heart block is a life-threatening condition which is highly associated with autoimmune and connective tissue disorders. Presence of maternal autoantibodies for associated conditions increases the risk of delivering a child with congenital complete heart block, however, less than a half of all women with such antibodies are symptomatic even after delivery. Mortality rate is highest during the neonatal period (45 %) and about two-thirds of all cases will require permanent pacing at some point in their lives...
October 19, 2016: Journal of Medical Case Reports
Demosthenes G Katritsis, Joseph E Marine, Fernando M Contreras, Akira Fujii, Rakesh Latchamsetty, Konstantinos C Siontis, George D Katritsis, Theodoros A Zografos, Roy M John, Laurence M Epstein, Gregory F Michaud, Elad Anter, Ali Sepahpour, Edward Rowland, Alfred E Buxton, Hugh Calkins, Fred Morady, William G Stevenson, Mark E Josephson
BACKGROUND: -Due to its low prevalence, data on atypical atrioventricular nodal reentrant tachycardia (AVNRT) are scarce, and the optimal ablation method is not established. Our study aimed at assessing the efficacy and safety of conventional slow pathway ablation, as applied for typical cases, in atypical AVNRT. METHODS: -We studied 2079 patients with AVNRT subjected to slow pathway ablation. In 113 patients, mean age 48.5±18.1 years, 68 female, atypical AVNRT or co-existent atypical and typical AVNRT without other concomitant arrhythmia was diagnosed...
October 17, 2016: Circulation
Varun Kumar, Santosh Sinha, Prakash Kumar, Mohammed Razi, Chandra Mohan Verma, Ramesh Thakur, Umeshwar Pandey, Rajpal Singh Bhardwaj, Mohammed Ahmad, R K Bansal, Shalini Gupta
OBJECTIVE: The primary aim of the present study was to evaluate the complications, particularly conduction blocks, subsequent morbidity and mortality, and effect of thrombolytic therapy in Indian patients with inferior wall myocardial infarction (IWMI). METHODS: This was a prospective, observational, single-center study conducted at LPS Institute of Cardiology, Kanpur, from December 2011 to May 2014. Patients who presented with typical chest pain and were subsequently diagnosed by standardized diagnostic criteria as having IWMI were enrolled...
October 12, 2016: Anatolian Journal of Cardiology
Anender Kaur Dhariwal, Prakash S Sanzgiri, Vasant Nagvekar
Cardiac rhythm abnormalities have been uncommonly observed in dengue fever and most of them have been reported in children. We discuss a 30-year-old female with dengue fever, who presented with repeated symptomatic episodes of high degree atrioventricular block with ventricular asystole, which responded to intravenous atropine and oral orciprenaline without recurrence on 6 months follow-up.
September 2016: Indian Heart Journal
Neeta Bachani, Gopi Krishna Panicker, Jaipal Jadwani, Yash Lokhandwala
In patients presenting with complete atrioventricular (AV) block, the common causes are degeneration of the conduction system, acute myocardial infarction, congenital and metabolic disorders (such as azotemia). However, at times, no cause can be ascribed and the label congenital or degenerative is applied depending on the patient's age and the QRS complex width. We present two cases of patients with complete AV block, who were subsequently found to have rare etiologies - sarcoidosis (with isolated feature of AV block) and non-Hodgkin's lymphoma...
September 2016: Indian Heart Journal
Ru-Xing Wang, Hon-Chi Lee, Jia-Ping Li, David O Hodge, Yong-Mei Cha, Paul A Friedman, Thomas M Munger, Komandoor Srivathsan, Behzad B Pavri, Win-Kuang Shen
BACKGROUND: Although sudden death (SD) is a rare complication after atrioventricular junction (AVJ) ablation and permanent pacemaker implantation, the risk factors leading to this SD remain unknown. The purpose of this study was to investigate SD and its risk factors after ablate-and-pace strategy for rate control in atrial fibrillation (AF) patients during long-term follow-up. HYPOTHESIS: METHODS: From January 2005 to December 2009, we enrolled into this study 517 AF patients with AVJ ablation and right ventricular pacemaker implantation...
October 17, 2016: Clinical Cardiology
Giorgia Grutter, Sara Alfieri, Giulio Calcagni, Maria Assunta Castelluzzo, Massimo Stefano Silvetti, Francesco Parisi, Fabrizio Drago
In OHT recipients, pathologic evaluation of the heart during acute rejection can show involvement of both the conduction system and the myocardium. We here describe the cases of a 9-year-old male with DCM and a 13-year-old female with RCM, who developed third-degree PAVB associated with acute rejection 36 months and 24 months after OHT, respectively. We conclude that PAVB could be considered an early sign of acute rejection after OHT in children who exhibit post-transplantation presyncope or syncope.
October 14, 2016: Pediatric Transplantation
Hiroko Izumi-Nakaseko, Yuji Nakamura, Xin Cao, Takeshi Wada, Kentaro Ando, Atsushi Sugiyama
Since an antipsychotic drug haloperidol has been clinically reported to induce QT interval prolongation and torsade de pointes, in this study its risk stratification for the onset of torsade de pointes was performed by using the chronic atrioventricular block canine model with a Holter electrocardiogram. Haloperidol in a dose of 3 mg kg(-1) p.o. prolonged the QT interval, but it did not induce torsade de pointes during the observation period of 21 h (n = 4), indicating that the dose would be safe. Meanwhile, haloperidol in a dose of 30 mg kg(-1) p...
October 13, 2016: Cardiovascular Toxicology
Maria Cecilia Gonzalez Corcia, Juan Sieira, Andrea Sarkozy, Carlo de Asmundis, Gian-Battista Chierchia, Jaime Hernandez Ojeda, Gudrun Pappaert, Pedro Brugada
AIMS: To investigate the clinical characteristics, prognoses, and presence of risk factors in young patients with Brugada syndrome (BS). METHODS AND RESULTS: A consecutive cohort of 128 young BS patients (≤25 years old at diagnosis) was analysed. Eighty-eight patients (69%) were asymptomatic, whereas 40 (31%) presented with clinical manifestations of BS. Markers of prognosis and risk were identified upon comparison of these two groups. A history of malignant syncope was strong predictors of ventricular arrhythmic events...
October 13, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Per Insulander, Hamid Bastani, Frieder Braunschweig, Nikola Drca, Göran Kennebäck, Jonas Schwieler, Jari Tapanainen, Mats Jensen-Urstad
AIMS: Cryoablation is an alternative method to radiofrequency ablation for treatment of atrioventricular nodal re-entrant tachycardia (AVNRT). This study investigates the long-term safety and efficacy of cryoablation in AVNRT. METHODS AND RESULTS: We studied 515 consecutive patients (317 women, mean age 50 years, range 13-89 years) undergoing a first cryoablation for AVNRT between 2003 and 2008. Ablations were performed with a 6-mm Freezor Xtra catheter. Six patients were acute failures; 494 out of 509 (97%) primarily successfully ablated patients were followed up for a mean of 7...
October 13, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Matteo Ziacchi, Pietro Palmisano, Ernesto Ammendola, Gabriele Dell'era, Federico Guerra, Stefano Aquilani, Vittorio Aspromonte, Giuseppe Boriani, Michele Accogli, Giuseppe Del Giorno, Eraldo Occhetta, Alessandro Capucci, Renato Pietro Ricci, Giampiero Maglia, Mauro Biffi
AIM: The aim of this multicentre, observational, transversal study was to evaluate pacemaker (PM) choice and setting in a large number of patients, in order to understand their relationship with the patients' clinical characteristics. METHODS AND RESULTS: The study enrolled a total of 1858 patients (71 ± 14 years, 54% male), consecutively evaluated during scheduled PM follow-up visits in 7 Italian cardiac arrhythmia centres. To evaluate the appropriateness of PM choice in relation to the patients' clinical characteristics, we analysed their rhythm disorders at the time of device implantation and the characteristics of the devices implanted...
October 13, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Qinghua Chang, Renguang Liu
No abstract text is available yet for this article.
September 28, 2016: International Journal of Cardiology
N W E Van den Berg, M G Slieker, I M van Beynum, C M Bilardo, D de Bruijn, S A Clur, J M J Cornette, I M E Frohn-Mulder, M C Haak, K E H van Loo-Maurus, G T R Manten, A B M H Rackowitz, L A J Rammeloo, A Reimer, M E B Rijlaarsdam, M W Freund
INTRODUCTION: Congenital atrioventricular block (CAVB) is a rare disorder with a significant morbidity and mortality. Consensus regarding the prescription and efficacy of prenatal corticosteroids is lacking. This nationwide study was initiated to evaluate the effects of prenatal treatment with corticosteroids on the outcome of CAVB in The Netherlands. METHODS: All fetuses identified with isolated congenital AVB-II° or AVB-III° in any of the eight academic fetal heart centers of The Netherlands between 2003 and 2013 were included and reviewed...
September 30, 2016: International Journal of Cardiology
Hideyuki Hasebe, Akira Takanohashi, Kazuaki Shirota, Hajime Nakamura
Atrioventricular (AV) block and pseudoaneurysm of the mitral-aortic intervalvular fibrosa (P-MAIVF) are rare complications of infective endocarditis (IE). A 72-year-old man with severe aortic stenosis was hospitalized due to IE. After admission, intermittent AV block and P-MAIVF were noted. Interestingly, an accelerated junctional rhythm was observed during the process of AV block resolution. Elective surgery, which included patch closure of the fistula and replacement of the aortic valve, was successfully performed...
2016: Internal Medicine
Federico Ferrando-Castagnetto, Roberto Ricca-Mallada, Alejandro Vidal, Fabián Martínez, Rodolfo Ferrando
Pacemaker stimulation is associated with unpredictable severe cardiac events. We evaluated left ventricular mechanical dyssynchrony (LVMD) during prolonged septal right ventricular pacing. We performed 99mTc-MIBI gated-SPECT and phase analysis in 6 patients with pacemakers implanted at least one year before scintigraphy due to advanced atrioventricular block. Using V-Sync of Emory Cardiac Toolbox we obtained phase bandwidth (PBW) and standard deviation (PSD) from rest phase histogram. Clinical variables, QRS duration, rate and mode of pacing in septal right ventricle wall, chamber diameters, presence and extension of myocardial scar and ischemia and rest LVEF were recorded...
2016: Medicina
Katarzyna Iwanicka-Pronicka, Magdalena Socha, Maria Jędrzejowska, Małgorzata Krajewska-Walasek, Aleksander Jamsheer
Holt-Oram syndrome (HOS) features radial ray hypoplasia, heart defect and cardiac conduction impairment. Ulnar-mammary syndrome (UMS) characterizes congenital defects of the ulnar side of the upper limbs, underdevelopment of apocrine glands including hypoplasia and the dysfunction of mammary glands, hypogonadism and obesity. Inheritance of both conditions is autosomal dominant, mutations or deletions are found in the TBX5 and TBX3 gene, respectively. The Polish patient presented short stature, obesity, congenital malformation of the radial and ulnar side of the upper limbs, heart block, hypogonadism and dysmorphic features...
2016: SpringerPlus
Roman Steckiewicz, Marek Rosiak, Przemysław Stolarz, Elżbieta B Świętoń, Marcin Grabowski, Dariusz A Kosior
Reversible complete atrioventricular block in patient with Wegener's granulomatosis - a report on a positive outcome with long term follow-up. Atrioventricular (AV) block is a rare complication of Wegener's granulomatosis (WG), thus there are no standards of management in such cases. We present a case of a patient with a dual-chamber pacemaker (DDD) implanted due to complete AV block in the course of Wegener's granulomatosis (WG). An immunosuppressive therapy resulted in the resolution of non-cardiac and AV conduction disorders...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
Ismail Bouhout, Amine Mazine, Lena Rivard, Aly Ghoneim, Ismail El-Hamamsy, Yoan Lamarche, Michel Carrier, Philippe Demers, Denis Bouchard
BACKGROUND: Sutureless self-expandable aortic bioprostheses rely on radial forces for stabilization, raising concern that these devices may increase the risk of postoperative conduction disease. The purpose of this study was to determine the incidence of conduction disorders after sutureless aortic valve replacement (AVR) with the Perceval S (Sorin Group, Saluggia, Italy) bioprosthesis. METHODS: Between June 2011 and March 2013, 108 consecutive patients underwent sutureless AVR with the Perceval S prosthesis...
October 4, 2016: Annals of Thoracic Surgery
Zijo Begic, Edin Begic, Senka Mesihovic-Dinarevic, Izet Masic, Senad Pesto, Mirza Halimic, Almira Kadic, Amra Dobraca
OBJECTIVE: To show the place and role of continuous electrocardiographic twenty-four-hour ECG monitoring in daily clinical practice of pediatric cardiologists. METHODS: According to protocol, 2753 patients underwent dynamic continuous ECG Holter monitoring (data collected from the "Register of ECG Holter monitoring" of Pediatric Clinic, UCC Sarajevo in period April 2003- April 2015). RESULTS: There were 50,5% boys and 49,5% girls, aged from birth to 19 years (1,63% - neonates and infants, 2,6% - toddlers, 9,95% - preschool children, 35,5% - gradeschoolers and 50,3% children in puberty and adolescence)...
July 16, 2016: Acta Informatica Medica: AIM
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