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https://www.readbyqxmd.com/read/28447320/should-ablation-be-first-line-therapy-for-patients-with-paroxysmal-af
#1
REVIEW
Sergio Conti, Atul Verma
Atrial fibrillation is the most common cardiac arrhythmia and the number of patients is expected to continuously increase in the next years. Catheter ablation is an effective, safe, and well-established treatment for patient with symptomatic and drug-resistant paroxysmal atrial fibrillation (PAF). Over the last decade, there was an increasing body of evidence demonstrating superiority of catheter ablation over antiarrhythmic drugs (AADs) in maintaining sinus rhythm. However, randomized clinical trials have not been conclusive to consider catheter ablation as a first-line therapy for PAF...
May 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28443594/diastolic-electrocardiographic-parameters-predict-implantable-device-detected-asymptomatic-atrial-fibrillation
#2
Ahmet İlker Tekkeşin, Yalçın Velibey, Ceyhan Türkkan, Ahmet Taha Alper, Yasin Çakıllı, Tolga Sinan Güvenç, Ozan Tanık, Adnan Kaya, Özlem Yıldırımtürk, Nazmiye Özbilgin, Özge Güzelburç, Ahmet Öz, Regayip Zehir, Kadir Gürkan
BACKGROUND: Atrial fibrillation (AF) is the most common clinically significant arrhythmia. It is now established that atrial high rate episodes (AHRE) correlate highly with AF. AIMS: Present study aimed to investigate the relation between diastolic electrocardiographic parameters and subclinical AF detected by cardiac implantable electronic devices. STUDY DESIGN: This study was cross-sectional study that included a total of 203 patients who had a DDDR pacemaker due to sinus node dysfunction...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28441828/-clinical-analysis-of-seven-cases-of-pulmonary-malignant-tumors-in-children
#3
D Xu, Z M Chen, W Z Gu, Y S Wang, M X Huang, L F Tang, Y Y Zhang, Y Jiang
Objective: To understand the clinical manifestation, imaging characteristics and outcomes of pulmonary malignant tumors in children. Method: We retrospectively collected information about seven cases of pulmonary malignant tumors in children in our hospital from Jan 2010 to Dec 2016. The information included clinical manifestation, imaging characteristics, pathologic results, and treatment. Result: (1) All the seven patients firstly visited pediatric internal medicine departments. Symptoms included cough (n=6), dyspnea (n=4), fever (n=2), anorexia (n=2), chest tightness (n=1), chest pain (n=1), lameness (n=1), abdominal distension and constipation (n=1)...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28431722/rosai-dorfman-disease-of-right-atrium-mimicking-myxoma
#4
Surendra Nath Khanna, Krishna Subramony Iyer, Mathews Paul, S Radhakrishnan, Arun K Rathi
Rosai-Dorfman disease, or sinus histiocytosis with massive lymphadenopathy, is a rare multisystemic disorder that was first reported by Rosai and Dorfman in 1969. It is a distinct histioproliferative disorder due to overproduction of histiocytes, which accumulate in lymph nodes. The cardiac involvement of this disease is extremely rare, and until now, only 18 cases have been reported. We report the case of a 53-year-old woman with right atrial mass mimicking myxoma, which the histopathologic evaluation revealed to be Rosai-Dorfman disease of the right atrium...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28431056/long-term-outcome-of-transvenous-pacemaker-implantation-in-infants-a-retrospective-cohort-study
#5
Laura M Vos, Janneke A E Kammeraad, Matthias W Freund, Andreas C Blank, Johannes M P J Breur
Aim: Evaluation of long-term outcome of transvenous pacemaker (PM) implantation in infants. Methods and Results: A retrospective analysis of all transvenous PM implantations in infants <10 kg between September 1997 and October 2001 was made. Indications for PM implantation, age at implantation, and determinants of long-term outcome including cardiac function, PM function, and PM (system) complications were noted. Seven patients underwent transvenous VVI(R) PM implantation...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28394008/large-thoracic-tumor-without-superior-vena-cava-syndrome
#6
Nikolaos Garmpis, Christos Damaskos, Nikolaos Patelis, Dimitrios Dimitroulis, Eleftherios Spartalis, Ioannis Tomos, Anna Garmpi, Michael Spartalis, Efstathios A Antoniou, Konstantinos Kontzoglou, Periklis Tomos
A 62 year-old male with long-standing smoking history presented with hemoptysis. Plain chest x-ray showed abnormal findings proximate to the right pulmonary hilum. Bronchoscopy revealed a fragile exophytic tumor of the right wall of the lower third of the trachea, infiltrating the right main bronchus (75% stenosis) and the right upper lobar bronchus (near total occlusion). Contrast-enhanced chest CT demonstrated a 7.2x4.9 cm tumor contiguous to the above-mentioned structures, mediastinal lymph node pathology, and a vessel coursing inferiorly to the left of the aortic arch and anterior to the left hilum...
April 10, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28385917/exercise-training-induced-bradycardia-is-caused-by-changes-in-intrinsic-sinus-node-function
#7
Mark R Boyett, Yanwen Wang, Shu Nakao, Jonathan Ariyaratnam, George Hart, Oliver Monfredi, Alicia D'Souza, George E Billman
N/A.
April 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28385377/the-effects-of-modification-to-lateral-tunnel-fontan-procedure-for-prophylactic-arrhythmia-surgery
#8
Hong-Gook Lim, Jeong Ryul Lee, Yong Jin Kim
BACKGROUND: Refractory atrial arrhythmias and hemodynamic abnormalities are responsible for significant morbidity and mortality after the Fontan operation. We evaluated the long-term feasibility, safety, and efficacy of prophylactic atrial arrhythmia surgery performed concomitantly with the lateral tunnel Fontan operation. METHODS: From 1997 August to 2003 December, 27 patients underwent a initial lateral tunnel Fontan with an interventional atrial incision and cryoablation from the atriotomy to the coronary sinus and right atrioventricular valve annulus...
April 3, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28382075/clinical-outcomes-after-anatomic-repair-including-hemi-mustard-operation-in-patients-with-congenitally-corrected-transposition-of-the-great-arteries
#9
Man-Shik Shim, Tae-Gook Jun, Ji-Hyuk Yang, Pyo Won Park, Yang Hyun Cho, Seok Kang, June Huh, Jin Young Song
BACKGROUND AND OBJECTIVES: The aims of this study were to determine the early and late outcomes of anatomic repair of congenitally corrected transposition of the great arteries (ccTGA) and to evaluate effectiveness of the hemi-Mustard procedure. SUBJECTS AND METHODS: We conducted a retrospective, single-center study of patients who underwent anatomic repair for ccTGA between July 1996 and December 2013. Sixteen patients were included in the study. The median age at the time of the operation was 3...
March 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28369832/a-comprehensive-comparative-analysis-of-treatment-modalities-for-sinonasal-malignancies
#10
Tyler P Robin, Bernard L Jones, Oren M Gordon, Andy Phan, Diana Abbott, Jessica D McDermott, Julie A Goddard, David Raben, Ryan M Lanning, Sana D Karam
BACKGROUND: Sinonasal malignancies are a rare and heterogeneous group of tumors for which there is a paucity of robust data with which to guide management decisions. The authors used the National Cancer Data Base to better understand the presenting characteristics of these tumors and to compare outcomes by treatment modality. METHODS: The National Cancer Data Base was queried for sinonasal malignancies diagnosed between 2004 and 2012. Overall survival was assessed using multivariate analyses and propensity score matching...
April 3, 2017: Cancer
https://www.readbyqxmd.com/read/28369351/morphometric-analysis-of-passiflora-leaves-the-relationship-between-landmarks-of-the-vasculature-and-elliptical-fourier-descriptors-of-the-blade
#11
Daniel H Chitwood, Wagner C Otoni
Background: Leaf shape among Passiflora species is spectacularly diverse. Underlying this diversity in leaf shape are profound changes in the patterning of the primary vasculature and laminar outgrowth. Each of these aspects of leaf morphology-vasculature and blade-provides different insights into leaf patterning. Results: Here, we morphometrically analyze >3300 leaves from 40 different Passiflora species collected sequentially across the vine. Each leaf is measured in two different ways: using 1) 15 homologous Procrustes-adjusted landmarks of the vasculature, sinuses, and lobes; and 2) Elliptical Fourier Descriptors (EFDs), which quantify the outline of the leaf...
January 1, 2017: GigaScience
https://www.readbyqxmd.com/read/28369243/age-dependent-down-regulation-of-hyperpolarization-activated-cyclic-nucleotide-gated-channel-4-causes-deterioration-of-canine-sinoatrial-node-function
#12
Jianlin Du, Songbai Deng, Di Pu, Yajie Liu, Jun Xiao, Qiang She
The activity of pacemaker cells in the sinoatrial node (SAN) is an indicator of normal sinus rhythm. Clinical studies have revealed that the dysfunction of the SAN progressively increases with aging. In this study, we determined the changes in hyperpolarization-activated cyclic nucleotide-gated channel 4 (HCN4) expression and the relationship between aging and canine SAN dysfunction. The results of cardiac electrophysiological determination revealed that the intrinsic heart rate decreased from 168 ± 11 beats min-1 in young canines to 120 ± 9 beats min-1 in adults and to 88 ± 9 beats min-1 in aged canines...
March 23, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28350118/tachycardia-bradycardia-syndrome-electrophysiological-mechanisms-and-future-therapeutic-approaches-review
#13
Gary Tse, Tong Liu, Ka Hou Christien Li, Victoria Laxton, Andy On-Tik Wong, Yin Wah Fiona Chan, Wendy Keung, Camie W Y Chan, Ronald A Li
Sick sinus syndrome (SSS) encompasses a group of disorders whereby the heart is unable to perform its pacemaker function, due to genetic and acquired causes. Tachycardia‑bradycardia syndrome (TBS) is a complication of SSS characterized by alternating tachycardia and bradycardia. Techniques such as genetic screening and molecular diagnostics together with the use of pre-clinical models have elucidated the electrophysiological mechanisms of this condition. Dysfunction of ion channels responsible for initiation or conduction of cardiac action potentials may underlie both bradycardia and tachycardia; bradycardia can also increase the risk of tachycardia, and vice versa...
February 6, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28347833/skin-sympathetic-nerve-activity-precedes-the-onset-and-termination-of-paroxysmal-atrial-tachycardia-and-fibrillation
#14
Andrea Uradu, Juyi Wan, Anisiia Doytchinova, Keith C Wright, Andrew Y T Lin, Lan S Chen, Changyu Shen, Shien-Fong Lin, Thomas Everett, Peng-Sheng Chen
BACKGROUND: Skin sympathetic nerve activity (SKNA) is useful for estimating sympathetic tone in humans. OBJECTIVE: The purpose of this study was to test the hypotheses that (1) increased SKNA is associated with the onset and termination of paroxysmal atrial tachycardia (AT) and atrial fibrillation (AF) and (2) sinoatrial node response to SKNA is reduced in patients with more frequent AT or AF episodes. METHODS: SKNA and electrocardiogram were recorded in 11 patients (4 men and 7 women; average age 66 ± 10 years), including 3 patients with AT (11 ± 18 episodes per patient) and 8 patients with AF (24 ± 26 episodes per patient)...
March 24, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28341981/meta-analysis-of-fontan-procedure-extracardiac-conduit-vs-intracardiac-lateral-tunnel
#15
REVIEW
J Zheng, Z Li, Q Li, X Li
This meta-analysis was designed to determine the effect of an intracardiac lateral tunnel (ILT) versus an extracardiac conduit (ECC) on patients undergoing a Fontan procedure. A search of the literature in PubMed, Embase, China Academic Literature, and Wanfang databases yielded 23 studies comprising approximately 1000 patients for analysis. There were statistically significant differences between ILT and ECC in the frequency of early sinus node dysfunction, early total arrhythmias, late supraventricular tachycardia, late sinus node dysfunction, late total arrhythmias, and need for pacemaker...
March 24, 2017: Herz
https://www.readbyqxmd.com/read/28339995/long-term-flecainide-therapy-in-type-3-long-qt-syndrome
#16
Ehud Chorin, Rivki Taub, Aron Medina, Nir Flint, Sami Viskin, Jesaia Benhorin
Aims: Type 3 long QT syndrome (LQT3) is caused by gain-of-function mutations in the cardiac sodium channel gene (SCN5A). Previous reports on the long-term use of sodium channel blockers in LQT3 are sparse. The objective of the current study was to evaluate the long-term safety and efficacy of flecainide therapy in patients with LQT3 who carry the D1790G SCN5A mutation. Methods and results: The study population comprised 30 D1790G carriers who were treated with flecainide and followed for 1-215 months (mean 145 ± 54 months, median 140 months)...
February 28, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28331443/pacemaker-use-following-heart-transplantation
#17
Hari R Mallidi, Michael Bates
BACKGROUND: The incidence of permanent pacemaker implantation after orthotopic heart transplantation has been reported to be 2%-24%. Transplanted hearts usually exhibit sinus rhythm in the operating room following reperfusion, and most patients do not exhibit significant arrhythmias during the postoperative period. However, among the patients who do exhibit abnormalities, pacemakers may be implanted for early sinus node dysfunction but are rarely used after 6 months. Permanent pacing is often required for atrioventricular block...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28318819/slow-pathway-radiofrequency-ablation-using-magnetic-navigation-a-description-of-technique-and-retrospective-case-analysis
#18
Abhishek Bhaskaran, Maha Albarri, Neil Ross, Sara Al Raisi, Rahul Samantha, Leonette Roode, Fazlur Nadri, Jeanette Ng, Stuart Thomas, Aravinda Thiagalingam, Pramesh Kovoor
BACKGROUND: The Magnetic Navigation System (MNS) catheter was shown to be stable in the presence of significant cardiac wall motion and delivered more effective lesions compared to manual control. This stability could potentially make AV junctional reentrant tachycardia (AVNRT) ablation safer. The aim of this study is to describe the method of mapping and ablation of AVNRT with MNS and 3-D electro-anatomical mapping system (CARTO, Biosense Webster, Diamond bar, CA, USA) anatomical mapping, with a view to improve the safety of ablation...
February 21, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28304253/ventricular-parasystole-in-a-neonatal-rhesus-macaque-macaca-mulatta
#19
Dalis E Collins, Brandy L Dozier, Jeffrey J Stanton, Lois Ma Colgin, Rhonda MacAllister
A 6-d-old Indian-origin female rhesus macaque (Macaca mulatta) presented with bradycardia shortly after sedation with ketamine. No other cardiac abnormalities were apparent. Approximately 2 wk after the initial presentation, the macaque was again bradycardic and exhibited a regularly irregular arrhythmia on a prestudy examination. ECG, echocardiography, blood pressure measurement, SpO2 assessment, and a CBC analysis were performed. The echocardiogram and bloodwork were normal, but the infant was hypotensive at the time of echocardiogram...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28302173/squamous-cell-carcinoma-arising-from-chronic-sacrococcygeal-pilonidal-disease-a-case-report
#20
Nick Michalopoulos, Konstantinos Sapalidis, Styliani Laskou, Evangelia Triantafyllou, Georgia Raptou, Isaak Kesisoglou
BACKGROUND: Sacrococcygeal pilonidal disease is a chronic, well-recognized entity, characterized by the recurrent formation of an abscess or draining sinus over the sacrococcygeal area. It is one of the most common surgical problems. Rarely, chronic inflammation and recurrent disease leads to malignant transformation, most commonly to squamous cell carcinoma (SCC). CASE PRESENTATION: We describe an extremely unusual case of SCC developing in a 60-year-old patient with a chronic pilonidal sinus complicated by an anal fistula...
March 17, 2017: World Journal of Surgical Oncology
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