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https://www.readbyqxmd.com/read/29202647/swallow-presyncope-in-an-athletic-patient-caused-by-third-degree-atrioventricular-block
#1
Axel Van Damme, Tine De Backer, Philippe Vanderheeren
Introduction Swallow syncope is a neurally mediated syncope. Multiple causes have been described in literature. A rare cause is arrhythmias. Only a limited amount of cases present the association of swallow syncope and third degree AV-block. Case presentation A 39-year-old man presented with episodes of presyncope while eating. Further medical history, physical examination, resting 12-lead ECG, cyclo-ergometry, transthoracic echocardiography and MRI of the heart were normal. 24 h Holter monitoring demonstrated high-grade third-degree atrioventricular (AV) block...
December 5, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29194653/electrophysiological-markers-predicting-impeding-av-block-during-ablation-of-atrioventricular-nodal-re-entry-tachycardia
#2
Nikolaos Fragakis, Lydia Krexi, Panagiota Kyriakou, Melani Sotiriadou, Charalambos Lazaridis, Athanasios Karamanolis, Panagiotis Dalampyras, Stelios Tsakiroglou, Vassilios Skeberis, Dimitrios Tsalikakis, Vassilios Vassilikos
BACKGROUND: Radiofrequency (RF) ablation of the slow pathway (SP) in atrioventricular nodal reentry tachycardia (AVNRT) is occasionally complicated with atrioventricular block (AVB) often predicted by junctional beats (JB) with loss of ventriculo-atrial (VA) conduction. METHODS: We analysed retrospectively 153 patients undergoing ablation of SP for typical AVNRT. Patients were divided into two age groups: 127 ≤70 years and 26 > 70 years. We analysed the interval between the atrial electrogram in the His-bundle position and the distal ablation catheter [A(H)-A(RFd)] and the proximal coronary sinus catheter [A(RFd)-A(CS)] before RF applications with and without JB...
November 30, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29186415/atrioventricular-dromotropathy-evidence-for-a-distinctive-entity-in-heart-failure-with-prolonged-pr-interval
#3
Floor C W M Salden, Valentina Kutyifa, Martin Stockburger, Frits W Prinzen, Kevin Vernooy
Heart failure (HF) is often accompanied by atrioventricular (AV) conduction disturbance, represented by prolongation of the PR interval on the electrocardiogram. Studies suggest that PR prolongation exists in at least 10% of HF patients, and it seems more prevalent in the presence of prolonged QRS duration. A prolonged PR interval may result in elevated left ventricular (LV) end-diastolic pressure, diastolic mitral regurgitation, and reduced LV pump function. This seems especially the case in patients with heart disease, in whom it is associated with an increased risk for atrial fibrillation, advanced AV heart block, HF, and death...
November 24, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29184615/mobitz-type-ii-atrioventricular-block-following-tramadol-and-fentanyl-in-a-patient-with-acute-coronary-syndrome-and-systolic-heart-failure
#4
Alaa A Rahhal, Amer H Aljundi, Abdulrahman Arabi
Serotonin syndrome is a potentially fatal condition allied with increased serotonergic activity in the central nervous system. There are published data reporting serotonin syndrome induced by either tramadol or fentanyl in combination with selective serotonin reuptake inhibitors in adult patients; however, there are no reports of serotonin syndrome resulting from the combination of tramadol and fentanyl. We report a case of a 52-year-old woman who was admitted to cardiology service and who developed Mobitz Type II atrioventricular (AV) block after administration of oral tramadol and intravenous fentanyl...
July 2017: Heart Views: the Official Journal of the Gulf Heart Association
https://www.readbyqxmd.com/read/29168986/skin-aging-parameters-a-window-to-heart-block
#5
Hisham Samir Roshdy, Mohammad Hassan Soliman, Ibtesam Ibrahim El-Dosouky, Soheir Ghonemy
BACKGROUND: Skin acts as a mirror to the internal state of the body. HYPOTHESIS: We tried to find the relation between skin aging parameters and the incidence of degenerative AV block. METHODS: This study included 97 patients divided into 2 groups; group D comprised 49 patients with advanced-degree AV block, and group C comprised the 48 matched control group. All were subjected to full history taking, thorough clinical examination, calculation of intrinsic skin aging score, and resting 12-lead surface electrocardiography (ECG)...
November 23, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/29165759/transient-receptor-potential-melastatin-4-cation-channel-in-pediatric-heart-block
#6
J Tian, X-J An, M-Y Fu
Progressive cardiac conduction disease (PCCD) is a common pediatric heart conduction disorder. It is an autosomal inheritance of rare mutations, which leads to familial cases of PCCD. In these cases, the His-Purkinje system's conductive capacity is progressively deranged, involving either right or left bundle branch block. Also, QRS complexes display widening is an important characteristic that culminates in complete AV block, syncope, and sudden death. Mutations in TRPM4 gene that encodes for transient receptor potential melastatin 4 have recently been reported to cause familial cases of PCCD and heart block...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29162403/cope-s-sign-and-complete-heart-block-in-a-78-year-old-patient-with-biliary-colic
#7
Panteleimon E Papakonstantinou, Natalia I Asimakopoulou, Emmanuel Kanoupakis, Spyridon Maragkoudakis, Simeon Panagiotakis, Achilleas Gikas
INTRODUCTION: Acute cholecystitis and biliary colic may have signs and symptoms similar to those of Acute Coronary Syndrome(ACS) along with ischemic ECG changes. Cholecystitis and/or biliary colic have been both reported as trigger factors for bradyarrhythmia in the literature. CASE REPORT: A 78-year-old male patient was admitted to our Emergency Department (ED) due to acute abdominal pain. The ECG on admission showed sinus bradycardia with a rate of 40 beats per minute (bpm) without signs of acute ischemia and a brief period (7 s) of complete atrioventricular (AV) block...
November 18, 2017: International Emergency Nursing
https://www.readbyqxmd.com/read/29144513/predictors-of-heart-rhythm-disturbances-in-hypertensive-obese-patients-with-obstructive-sleep-apnea
#8
Lyudmila Sergeevna Korostovtseva, Nadezhda Edvinovna Zvartau, Oxana Petrovna Rotar, Yurii Vladimirovich Sviryaev, Aleksandra Olegovna Konradi
Objective: To assess the incidence and predictors of heart rhythm and conduction disturbances in hypertensive obese patients with and without obstructive sleep apnea (OSA). Methods: This is an open, cohort, prospective study. Out of 493 screened patients, we selected 279 hypertensive, obese individuals without severe concomitant diseases: 75 patients without sleep-disordered breathing (non-SDB group), and 204 patients with OSA (OSA group). At baseline, all patients underwent examination, including ECG, Holter ECG monitoring, and sleep study...
September 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29134433/practice-makes-perfect-relationship-between-hospital-procedure-volume-and-permanent-pacemaker-implantation-after-paroxysmal-supraventricular-tachycardia-ablation
#9
Vratika Agarwal, Neeraj Shah, Kathan Mehta, Anand Agarwal, Jonathan Willner, James Lafferty
PURPOSE: Paroxysmal supraventricular tachycardia (PSVT) ablation can result in injury to the atrioventricular (AV) node causing complete heart block requiring permanent pacemaker (PPM) implantation. Few studies have examined the impact of hospital PSVT ablation volume and PPM implantation rates post ablation. METHODS: We included adult patients from the Nationwide Inpatient Sample (NIS) database, from 1998 to 2011, using ICD-9 diagnoses codes 427.0 and 427.89 for PSVT and ICD-9 procedure code 37...
November 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29127856/acute-and-long-term-effects-of-fingolimod-on-heart-rhythm-and-heart-rate-variability-in-patients-with-multiple-sclerosis
#10
Ruken Özge Akbulak, Sina C Rosenkranz, Benjamin N Schaeffer, Hans O Pinnschmidt, Stephan Willems, Christoph Heesen, Boris A Hoffmann
BACKGROUND: Fingolimod can lead to increased risk of cardiac events such as bradycardia or atrioventricular (AV) block. OBJECTIVE: Evaluate acute and long-term effects of fingolimod on heart rhythm (HR), heart rate variability (HRV) and development of AV-blocks. METHODS: In 64 patients with relapsing-remitting multiple sclerosis Holter ECG monitoring (HEM) and HRV analysis were performed 24h before, six h during and 72h after initiation of fingolimod...
November 2, 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29127552/mao-b-inhibitors-do-not-block-in-vivo-flortaucipir-18-f-av-1451-binding
#11
Allan K Hansen, David J Brooks, Per Borghammer
PURPOSE: Recent evidence suggests that the tau radiotracer [(18)F]THK-5351 displays high affinity for the monoamine oxidase type B (MAO-B) enzyme. Utilizing another tau-tracer, flortaucipir ([(18)F]AV-1451), we previously reported that non-demented Parkinson's disease patients show off-target binding in subcortical structures, but no appreciable cortical uptake. However, 59 % of these patients were receiving MAO-B inhibitors at the time of their scan. Here, we retrospectively investigated if MAO-B inhibitors in clinical doses affect flortaucipir binding...
November 10, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/29123887/two-cases-of-life-threatening-arrhythmia-induced-by-risperidone-evaluation-of-risperidone-and-9-hydroxy-risperidone-concentrations
#12
Asami Ito, Tomoyuki Enokiya, Eiji Kawamoto, Yoshiaki Iwashita, Taichi Takeda, Kenji Ikemura, Masahiro Okuda, Hiroshi Imai
Cases: Case 1: A 20-year-old woman suffering a suspected overdose was transported to the hospital. She presented bradycardia with wide QRS waves and QT prolongation, followed by cardiac arrest. Extracorporeal cardiopulmonary resuscitation was implemented, improving circulation. Risperidone and 9OH-RIS levels were 9.6 ng/mL and 127.6 ng/mL, respectively. Case 2: A 54-year-old woman was hospitalized for femoral fracture and underwent surgery. Her electrocardiogram showed bradycardia and complete AV block...
July 2017: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29121498/cardiac-involvement-in-myotonic-dystrophy-the-role-of-troponins-and-n-terminal-pro-b-type-natriuretic-peptide
#13
Rea Valaperta, Claudia De Siena, Rosanna Cardani, Fortunata Lombardia, Edina Cenko, Benedetta Rampoldi, Barbara Fossati, Elisa Brigonzi, Roberta Rigolini, Paola Gaia, Giovanni Meola, Elena Costa, Raffaele Bugiardini
BACKGROUND AND AIMS: Myotonic dystrophy type 1 (DM1) and type 2 (DM2) are dominant inherited muscular dystrophies with multiple systemic involvement, often producing cardiac injury. This study sought to determine the clinical significance of elevated high sensitivity cardiac troponin T and I (hs-cTnT and hs-cTnI), and N-terminal pro B-type natriuretic peptide (NT-pro-BNP) in this population. METHODS: Sixty DM patients (35 men and 25 women; mean age: 45.1 years, range: 12-73 years) underwent clinical cardiac investigations and measurements of serum hs-cTnT, hs-cTnI, creatine kinase (CK), and NT-proBNP...
October 21, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29113701/electrocardiographic-patterns-in-biventricular-pacing-delivered-by-second-generation-cardiac-resynchronization-devices
#14
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/29095976/lamin-a-c-cardiomyopathy-young-onset-high-penetrance-and-frequent-need-for-heart-transplantation
#15
Nina Eide Hasselberg, Trine Fink Haland, Jørg Saberniak, Pål Haugar Brekke, Knut Erik Berge, Trond Paul Leren, Thor Edvardsen, Kristina Hermann Haugaa
Aims: Lamin A/C (LMNA) mutations cause familial dilated cardiomyopathy (DCM) with frequent conduction blocks and arrhythmias. We explored the prevalence, cardiac penetrance, and expressivity of LMNA mutations among familial DCM in Norway. Furthermore, we explored the risk factors and the outcomes in LMNA patients. Methods and results: During 2003-15, genetic testing was performed in patients referred for familial DCM. LMNA genotype-positive subjects were examined by electrocardiography, Holter monitoring, cardiac magnetic resonance imaging, and echocardiography...
October 31, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29079566/swine-atrioventricular-node-ablation-using-stereotactic-radiosurgery-methods-and-in-vivo-feasibility-investigation-for-catheter-free-ablation-of-cardiac-arrhythmias
#16
Marwan M Refaat, Jad A Ballout, Patrick Zakka, Mostafa Hotait, Karine A Al Feghali, Ibrahim Abu Gheida, Charbel Saade, Mukbil Hourani, Fady Geara, Malek Tabbal, Pierre Sfeir, Wassim Jalbout, Wael Al-Jaroudi, Abdo Jurjus, Bassem Youssef
BACKGROUND: Linear accelerator-based stereotactic radiosurgery delivered to cardiac arrhythmogenic foci could be a promising catheter-free ablation modality. We tested the feasibility of in vivo atrioventricular (AV) node ablation in swine using stereotactic radiosurgery. METHODS AND RESULTS: Five Large White breed swine (weight 40-75 kg; 4 females) were studied. Single-chamber St Jude pacemakers were implanted in each pig. The pigs were placed under general anesthesia, and coronary/cardiac computed tomography simulation scans were performed to localize the AV node...
October 27, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29073000/-optimized-lv-only-pacing-using-a-dual-chamber-pacemaker-as-a-cost-effective-alternative-to-crt
#17
Maneesh K Rai, Mukund A Prabhu, Abhishek Sharma, Ritesh Vekariya, Padmanabh Kamath, Narasimha Pai, Ramanath L Kamath
BACKGROUND: Cardiac Resynchronization therapy (CRT) remains largely under-used in developing countries owing to the high cost of therapy. In this pilot study, we explore 'optimized' Left Ventricle Only Pacing (LVOP) as a cost effective alternative to cardiac resynchronization therapy in selected patients with heart failure. HYPOTHESIS: In economically poorer patients with heart failure, left bundle branch block (LBBB) and intact AV node conduction, synchronization can be obtained using a dual chamber pacemaker (leads in right atrium and Left ventricle) with the help of 2D strain imaging...
May 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29067078/tetralogy-of-fallot-repair-in-patients-presenting-after-infancy-a-single-surgeon-experience
#18
Tariq Waqar, Muhammad Usman Riaz, Tania Mahar
OBJECTIVE: To determine the early surgical outcomes of Tetralogy of Fallot (TOF) repair in children and young adults operated after the age of one year. METHODS: In this retrospective study, 307 cases of primary repair of Tetralogy of Fallot were done between September 2012 to February 2017, at CPE Institute of cardiology, Multan. Out of 307 operated patients, 4 (1.3%) patients had previous modified Blalock Taussig shunts, 2 (0.6%) associated ASD with TOF, 3 (0...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29049249/cardiac-conduction-disturbances-and-aging-in-patients-with-duchenne-muscular-dystrophy
#19
Kazuhiko Segawa, Hirofumi Komaki, Madoka Mori-Yoshimura, Yasushi Oya, Koichi Kimura, Hisateru Tachimori, Naohiro Kato, Masayuki Sasaki, Yuji Takahashi
The majority of patients with Duchenne muscular dystrophy (DMD) have electrocardiographic abnormalities, but the clinical significance of conduction disturbances remains unclear. This study aimed to evaluate age-dependent cardiac conduction disturbances by electrocardiogram (ECG) to identify risks of complete atrioventricular (AV) block in this patient population.In total, 47 patients with DMD (age, ≥20 ys) who recorded ECGs at our hospital from July 2015 to June 2016 were included in this study. The PR interval and QRS duration in their previous ECGs were analyzed retrospectively...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29044787/intracardiac-ablation-for-atrioventricular-nodal-reentry-tachycardia-using-a-6%C3%A2-mm-distal-electrode-cryoablation-catheter-prospective-multicenter-north-american-study-icy-avnrt-study
#20
Peter Wells, Marc Dubuc, George J Klein, Dan Dan, Jean-Francois Roux, Evan Lockwood, Marcio Sturmer, David Dunbar, Paul Novak, Arun Rao, Brett J Peterson, Fred Kueffer, Kenneth A Ellenbogen
INTRODUCTION: Radiofrequency (RF) ablation is effective for slow pathway ablation, but carries a risk of inadvertent AV block requiring permanent pacing. By comparison, cryoablation with a 4 mm distal electrode catheter has not been reported to cause permanent AV block but has been shown to be less effective than RF ablation. We sought to define the safety and efficacy of a 6 mm distal electrode cryoablation catheter for slow pathway ablation in patients with atrioventricular nodal reentry tachycardia (AVNRT)...
October 17, 2017: Journal of Cardiovascular Electrophysiology
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