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https://www.readbyqxmd.com/read/28918529/anatomic-repair-of-congenitally-corrected-transposition-of-the-great-arteries-single-center-intermediate-term-experience
#1
Shagun Sachdeva, Roni M Jacobsen, Ronald K Woods, Michael E Mitchell, Joseph R Cava, Nancy S Ghanayem, Peter C Frommelt, Peter J Bartz, James S Tweddell
We present our experience for patients who have undergone an anatomic repair (AR) for congenitally corrected transposition of the great arteries (CCTGA) at the Children's Hospital of Wisconsin. A retrospective chart review of patients who underwent AR for CCTGA from 2001 to 2015 was performed. The cohort consisted of 15 patients (74% male). Median age of anatomic repair was 15 months (range 4.5-45.6 months). Four patients had a bidirectional Glenn (BDG) prior to AR. At the time of AR,-9 (60%) underwent Senning/Rastelli procedure, 4 (26...
September 16, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28917497/comparison-of-outcome-of-possible-versus-definite-infective-endocarditis-involving-prosthetic-or-bioprosthetic-heart-valves
#2
Laurent Fauchier, Lauriane Pericart, Thierry Bourguignon, Thibaud Genet, Arnaud Bisson, Anne Bernard, Louis Bernard, Dominique Babuty
The objectives of this study were to describe and compare the clinical characteristics and outcomes of patients with definite and possible infective endocarditis (IE) involving prosthetic heart valve, and to identify prognostic factors for long-term mortality, using data from an unselected cohort of consecutive patients. We studied data from 133 consecutive patients with IE involving prosthetic heart valve seen in an academic institution between 1990 and 2012. Patients were classified according to the modified Duke criteria for IE: patients with possible IE (n = 47, 35%) and patients with definite IE (n = 86, 65%)...
August 7, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28916636/electrophysiological-heterogeneity-of-pacemaker-cells-in-rabbit-intercaval-region-including-sa-node-insights-from-recording-multiple-ion-currents-in-each-cell
#3
Oliver Monfredi, Kenta Tsutsui, Bruce D Ziman, Michael D Stern, Edward G Lakatta, Victor A Maltsev
Cardiac pacemaker cells, including cells of the sinoatrial node, are heterogeneous in size, morphology and electrophysiological characteristics. The exact extent to which these cells differ electrophysiologically is unclear, yet is critical to understanding their functioning. We examined major ionic currents in individual intercaval pacemaker cells (IPC) sampled from the para-cristal, inter-caval region (including the sinoatrial node) that were spontaneously beating after enzymatic isolation from rabbit hearts...
September 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28916519/modeling-pacemaker-deterioration-with-age
#4
Caitlin Sedwick
New JGP study models how sinoatrial node pacemaker activity changes in aged hearts.
September 15, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/28916499/-re-programming-of-subtype-specific-cardiomyocytes
#5
Frauke Hausburg, Julia Jeannine Jung, Matti Hoch, Markus Wolfien, Arash Yavari, Christian Rimmbach, Robert David
Adult cardiomyocytes (CMs) possess a highly restricted intrinsic regenerative potential -a major barrier to the effective treatment of a range of chronic degenerative cardiac disorders characterised by cellular loss and/or irreversible dysfunction and which underlies the majority of deaths in developed countries. Both stem cell programming and direct cell reprogramming hold promise as novel, potentially curative approaches to address this therapeutic challenge. The advent of induced pluripotent stem cells (iPSCs) has introduced a second pluripotent stem cell source besides embryonic stem cells (ESCs), enabling even autologous cardiomyocyte production...
September 12, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28912977/isolated-persistent-left-superior-vena-cava-sick-sinus-syndrome-and-challenging-pacemaker-implantation
#6
Hatice S Kemal, Aziz Gunsel, Levent Cerit, Murat Kocaoglu, Hamza Duygu
Persistent left superior vena cava with absent right superior vena cava is a very rare venous anomaly and is known as isolated PLSVC. It is usually an asymptomatic anomaly and is mostly detected during difficult central venous access or pacemaker implantation, though it could also be associated with an increased incidence of congenital heart disease, arrhythmias, and conduction disturbances. Herein, we describe a dual-chamber pacemaker implantation in a patient with isolated PLSVC and sick sinus syndrome.
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28910289/how-tavi-registries-report-clinical-outcomes-a-systematic-review-of-endpoints-based-on-varc-2-definitions
#7
Shixuan Zhang, Peter L Kolominsky-Rabas
INTRODUCTION: Transcatheter aortic valve implantation (TAVI) has been demonstrated to be an alternative treatment for severe aortic stenosis in patients considered as high surgical risk. Since its first human implantation by Cribier et al., TAVI has been shown to increase survival rate and quality of life for high surgical risks patients. The objective of this study is to provide an overview of TAVI registries and the reporting clinical outcomes based on the VARC-2 definitions. In addition, the comparability and adherence of VARC-2 reporting within the identified TAVI registries was reviewed...
2017: PloS One
https://www.readbyqxmd.com/read/28904721/septal-alcoholization-in-hypertrophic-cardiomyopathy-about-11-cases
#8
Yibar Kambiré, Georges Rosario Christian Millogo, Claire Dauphin, Jean-René Lusson
Outcomes of septal alcoholization in hypertrophic obstructive cardiomyopathy are not enough studied in all centers. The purpose of this study was to determine the outcomes of septal alcoholization in hypertrophic obstructive cardiomyopathy in our hospital. A retrospective and prospective descriptive study focused on all patients aged at least 18 years treated by alcohol septal ablation between July 2005 and June 2010 in the cardiology unit of Clermont-Ferrand teaching Hospital. The inclusion criteria were, hypertrophic obstructive cardiomyopathy with left ventricular outflow tract obstruction ≥ 50 mmHg, symptomatic despite optimal medical therapy...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28904525/knowing-about-device-algorithms-to-understand-the-rhythm-and-role-of-managed-ventricular-pacing
#9
Antoine Kossaify, Hiba Hamdar
A 66-year-old patient with a DR pacemaker for intermittent atrioventricular block presented with an electrocardiogram (ECG) showing some P waves non followed by QRS complexes, raising suspicion of device dysfunction. The device was equipped with a special algorithm (Managed Ventricular Pacing; Medtronic), and the observed ECG tracing was a normal consequence of the function of such algorithms. Being aware of the function of specific algorithms is essential to adequately analyze rhythms.
2017: Clinical Medicine Insights. Case Reports
https://www.readbyqxmd.com/read/28904485/temporary-left-ventricular-pacing-a-desperate-life-saving-measure-in-emergency-situation
#10
Ajaz Ahamad Lone, Mohd Iqbal Dar, Fayaz Ahamad Rather, Mohd Sultan Alai, Imran Hafiz, Jahangir Rashid Beigh
Transcutaneous or transvenous pacing of the right ventricle is performed as a routine practice for patients received with symptomatic bradycardia or complete heart block with relative ease in cath lab. However, more and more patients are received with multiple comorbidities, critical condition, and difficult vascular access. In this article, we describe a patient with difficult venous access with tricuspid regurgitation and displaced the right ventricular pacemaker temporary lead undergoing coronary angiography who was managed with emergent nonconventional left ventricular pacing...
August 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28902650/a-rare-cause-of-cyanosis-and-hypoxia-that-should-not-be-forgotten-after-implantable-cardioverter-defibrillator-implantation
#11
Uğur Canpolat, Nihan Bahadır, Levent Şahiner, Kudret Aytemir
Transvenous pacemaker or implantable cardioverter defibrillator (ICD) implantation procedures are usually performed under local anesthetic, and prilocaine is the most common agent to be used. The data regarding methemoglobinemia after cardiac device implantation are scarce. Thus, presently described is the case of a 47-year-old female patient with arrhythmogenic right ventricular cardiomyopathy/dysplasia who underwent ICD implantation for secondary prophylaxis and developed cyanosis as a result of prilocaine-associated methemoglobinemia...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28901013/how-active-are-young-cardiac-device-patients-objective-assessment-of-activity-in-children-with-cardiac-devices
#12
Caridad M de la Uz, Ashley E Burch, Bruce Gunderson, Jodi Koehler, Samuel F Sears
BACKGROUND: The daily activity of pediatric patients with implantable cardiac devices provides behavioral evidence of functional outcomes. Modern devices provide continuous accelerometer data that is sensitive to movement, but normative values have not been published for pediatric activity rates. This study provides the first normative accelerometer data on activity rates in a large sample of pediatric cardiac device patients. METHODS: Patients were between 3 and 18 years old, (N = 1,905) and implanted with a cardiac device from a single device company, and enrolled in remote monitoring...
September 12, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28900929/cardiovascular-and-hemostatic-disorders-soce-in-cardiovascular-cells-emerging-targets-for-therapeutic-intervention
#13
Klaus Groschner, Niroj Shrestha, Nicola Fameli
The discovery of the store-operated Ca(2+) entry (SOCE) phenomenon is tightly associated with its recognition as a pathway of high (patho)physiological significance in the cardiovascular system. Early on, SOCE has been investigated primarily in non-excitable cell types, and the vascular endothelium received particular attention, while a role of SOCE in excitable cells, specifically cardiac myocytes and pacemakers, was initially ignored and remains largely enigmatic even to date. With the recent gain in knowledge on the molecular components of SOCE as well as their cellular organization within nanodomains, potential tissue/cell type-dependent heterogeneity of the SOCE machinery along with high specificity of linkage to downstream signaling pathways emerged for cardiovascular cells...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28900547/chagas-cardiomyopathy-presenting-as-symptomatic-bradycardia-an-underappreciated-emerging-public-health-problem-in-the-united-states
#14
Richard Jesse Durrance, Tofura Ullah, Zulekha Atif, William Frumkin, Kaushik Doshi
Chagas cardiomyopathy (CCM) is traditionally considered a disease restricted to areas of endemicity. However, an estimated 300,000 people living in the United States today have CCM, of which its majority is undiagnosed. We present a case of CCM acquired in an endemic area and detected in its early stage. A 42-year-old El Salvadoran woman presented with recurrent chest pain and syncopal episodes. Significant family history includes a sister in El Salvador who also began suffering similar episodes. Physical exam and ancillary studies were only remarkable for sinus bradycardia...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28899536/utility-of-new-generation-pacemakers-in-sleep-apnea-screening
#15
Margarida Dias, Inês Gonçalves, Bruno Amann, Pedro Marques, Cristina Martinho, Catarina Leitão, Rita Pinto Basto, João de Sousa, Paula Pinto, Cristina Bárbara
OBJECTIVE: Patients with cardiac pacemakers present a high prevalence of undiagnosed sleep apnea syndrome (SAS). New-generation pacemakers have algorithms that identify sleep respiratory events. Our aim was to evaluate their accuracy in the diagnosis of SAS. METHODS: We performed a prospective study that included patients with new-generation pacemakers (Reply 200 pacemakers). All patients underwent a polysomnography (PSG). On the same night, the respiratory disturbance index of the PSG (RDI-PSG) and of the pacemaker (RDI-PM) were recorded...
September 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28899000/rhoa-rock-signalling-is-necessary-for-lateralization-and-differentiation-of-the-developing-sinoatrial-node
#16
Rebecca Vicente-Steijn, Tim P Kelder, Leon G Tertoolen, Lambertus J Wisse, Daniël A Pijnappels, Robert E Poelmann, Martin J Schalij, Marco C deRuiter, Adriana C Gittenberger-de Groot, Monique R M Jongbloed
Aims: RHOA-ROCK signalling regulates cell migration, proliferation, differentiation, and transcription. RHOA is expressed in the developing cardiac conduction system in chicken and mice. In early development, the entire sinus venosus myocardium, including both the transient left-sided and the definitive sinoatrial node (SAN), has pacemaker potential. Later, pacemaker potential is restricted to the right-sided SAN. Disruption of RHOA expression in adult mice causes arrhythmias including bradycardia and atrial fibrillation, the mechanism of which is unknown but presumed to affect the SAN...
August 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28895992/mass-in-a-pacemaker-pocket
#17
Qiang Li
No abstract text is available yet for this article.
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28895705/-complete-heart-block-and-asystole-in-a-child-with-ataxia-telangiectasia
#18
Daniel Palanca Arias, Ariadna Ayerza Casas, Mercedes Domínguez Cajal, Marta López Ramón, Lorenzo Jiménez Montañés
Ataxia-telangiectasia is a disorder characterized by cerebellar ataxia, telangiectasia, immunodeficiency, and increased predisposition to cancer susceptibility. Mutations in the ataxia telangiectasia mutated gene seem to play an important role in normal cell function and in cardiovascular remodeling. We report a case of a 14-year-old boy with ataxia-telangiectasia and high-grade B-non-Hodgkin lymphoma who remained in continuous complete remission after chemotherapy and who was admitted into our Emergency Room presenting with episodes of presyncope...
October 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28893961/conduction-disturbances-after-transcatheter-aortic-valve-replacement-current-status-and-future-perspectives
#19
REVIEW
Vincent Auffret, Rishi Puri, Marina Urena, Chekrallah Chamandi, Tania Rodriguez-Gabella, François Philippon, Josep Rodés-Cabau
Transcatheter aortic valve replacement (TAVR) has become a well-accepted option for treating patients with aortic stenosis at intermediate to high or prohibitive surgical risk. TAVR-related conduction disturbances, mainly new-onset left bundle-branch block and advanced atrioventricular block requiring permanent pacemaker implantation, remain the most common complication of this procedure. Furthermore, improvements in TAVR technology, akin to the increasing experience of operators/centers, have translated to a major reduction in periprocedural complications, yet the incidence of conduction disturbances has remained relatively high, with perhaps an increasing trend over time...
September 12, 2017: Circulation
https://www.readbyqxmd.com/read/28890876/implantable-cardioverter-defibrillator-in-non-ischemic-cardiomyopathy-a-meta-analysis-of-randomized-controlled-trials
#20
Ahmad Masri, Muhammad Hammadah, Evan Adelstein, Sandeep Jain, Samir Saba
BACKGROUND: Sudden cardiac death (SCD) is a significant cause of mortality in patients with non-ischemic cardiomyopathy (NICM). Implantable cardioverter defibrillators (ICDs) are currently indicated for the primary prevention of SCD in these patients. Conflicting results from published randomized controlled trials (RCTs) have recently questioned the protective role of ICD in NICM patients to perform an updated meta-analysis of the effect of ICDs on outcomes of NICM patients. METHODS: We performed a search of PubMed, EMBASE, and Cochrane databases for RCTs comparing ICD to medical therapy in patients with NICM...
August 2017: Cardiovascular Diagnosis and Therapy
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