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https://www.readbyqxmd.com/read/28096843/left-atrial-myxoma-in-a%C3%A2-patient-with-a%C3%A2-biventricular-pacemaker
#1
Brygida Przywara-Chowaniec, Łukasz Czarnecki, Ewa Nowalny-Kozielska, Maciej Gawlikowski, Mariusz Opara, Agata Puzio, Damian Kawecki, Bartosz Wesołowski
Myxomas make up about 50% of benign cardiac neoplasms. The most common location is within the left atrium. At the initial stage they do not exhibit any specific clinical symptoms, so they are often diagnosed by accident or during examinations recommended for other reasons. Here we present a case of left atrium myxoma in a patient (a man, age 68 years) with a dual chamber pacemaker. The myxoma did not reveal any clinical symptoms and was discovered in echocardiography during routine diagnostic examination preceding pacemaker implantation...
December 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28089344/heparan-sulfate-storage-in-the-cardiac-conduction-system-triggers-atrioventricular-block
#2
Rie Kato, Hiroaki Miyahara, Tatsuya Kawano, Atsuko Matsuzuka, Kimiko Noda, Tatsuro Izumi
OBJECTIVE: To elucidate the novel biological functions of heparan sulfate (HS) by clinic-pathologically studying a patient with paroxysmal atrioventricular (AV) block. PATIENT: A long-surviving male patient with Sanfilippo syndrome type A presented with paroxysmal AV block at age 33years. He then survived another 2.5years after the onset of paroxysmal AV block and pacemaker implantation. METHODS AND RESULTS: His cardiac histopathological examination at autopsy showed HS storage in the cardiac conduction system (CCS), especially in the atrioventricular node (AVN)-His bundle branches...
January 12, 2017: Brain & Development
https://www.readbyqxmd.com/read/28086847/cardiac-sarcoidosis-resembling-panic-disorder-a-case-report
#3
Keita Tokumitsu, Jun Demachi, Yukichi Yamanoi, Shigeto Oyama, Junko Takeuchi, Koji Yachimori, Norio Yasui-Furukori
BACKGROUND: Sarcoidosis is a systemic disease of unknown etiology, in which granulomas develop in various organs, including the skin, lungs, eyes, or heart. It has been reported that patients with sarcoidosis are more likely to develop panic disorder than members of the general population. However, there are many unknown factors concerning the causal relationship between these conditions. CASE PRESENTATION: We present the case of a 57-year-old woman who appeared to have panic disorder, as she experienced repeated panic attacks induced by transient complete atrioventricular block, associated with cardiac sarcoidosis...
January 13, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28074807/isolated-persistent-left-superior-vena-cava-a-case-report-and-its-clinical-implications
#4
Samarjit Bisoyi, Usha Jagannathan, Anjan Kumar Dash, Sabyasachi Tripathy, Raghunath Mohapatra, Naba Kumar Pattnaik, Satyajit Sahu, Debashish Nayak
The venous anomaly of a persistent left superior vena cava (PLSVC) affects 0.3%-0.5% of the general population. PLSVC with absent right superior vena cava, also termed as "isolated PLSVC," is an extremely rare venous anomaly. Almost half of the patients with isolated PLSVC have cardiac anomalies in the form of atrial septal defect, endocardial cushion defects, or tetralogy of Fallot. Isolated PLSVC is usually innocuous. Its discovery, however, has important clinical implications. It can pose clinical difficulties with central venous access, cardiothoracic surgeries, and pacemaker implantation...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28073883/infective-endocarditis-and-risk-of-death-after-cardiac-implantable-electronic-device-implantation-a-nationwide-cohort-study
#5
Cengiz Özcan, Jakob Raunsø, Morten Lamberts, Lars Køber, Tommi Bo Lindhardt, Niels Eske Bruun, Marie Louise Laursen, Christian Torp-Pedersen, Gunnar Hilmar Gislason, Morten Lock Hansen
AIMS: To determine the incidence, risk factors, and mortality of infective endocarditis (IE) following implantation of a first-time, permanent, cardiac implantable electronic device (CIED). METHODS AND RESULTS: From Danish nationwide administrative registers (beginning in 1996), we identified all de-novo permanent pacemakers (PMs) and implantable cardioverter defibrillators (ICDs) together with the occurrence of post-implantation IE-events in the period from 2000-2012...
January 10, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28072689/an-observational-study-on-the-effect-of-premature-ventricular-complex-burden-on-long-term-outcome
#6
Chin-Yu Lin, Shih-Lin Chang, Yenn-Jiang Lin, Yun-Yu Chen, Li-Wei Lo, Yu-Feng Hu, Ta-Chuan Tuan, Tze-Fan Chao, Fa-Po Chung, Jo-Nan Liao, Yao-Ting Chang, Chung-Hsing Lin, Rohit Walia, Abigail Louise D Te, Shinya Yamada, Chuen-Wang Chiou, Hsuan-Ming Tsao, Shih-Ann Chen
The long-term clinical impact of premature ventricular complexes (PVCs) on mortality and morbidity has not been fully studied. This study aimed to investigate the association between the burden of PVCs and adverse clinical outcome.A total of 5778 subjects, who were pacemaker-free and ventricular tachycardia-free at baseline, received 24-hour electrocardiography monitoring between January 1, 2002 and December 31, 2004. Clinical event data were retrieved from the Bureau of National Health Insurance of Taiwan...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28070867/analytical-modeling-for-computing-lead-stress-in-a-novel-epicardial-micropacemaker
#7
Li Zhou, Yaniv Bar-Cohen, Raymond A Peck, Giorgio V Chirikian, Brett Harwin, Ramen H Chmait, Jay D Pruetz, Michael J Silka, Gerald E Loeb
Implantation and maintenance of a permanent cardiac pacing system in children remains challenging due to small patient size, congenital heart defects and somatic growth. We are developing a novel epicardial micropacemaker for children that can be implanted on the epicardium within the pericardial space via a minimally-invasive technique. The key design configurations include a novel open-coiled lead in which living tissue replaces the usual polymeric support for the coiled conductor. To better understand and be able to predict the behavior of the implanted lead, we performed a radiographic image-based modeling study on a chronic animal test...
January 9, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28060289/high-resolution-optical-mapping-of-the-mouse-sino-atrial-node
#8
Di Lang, Alexey V Glukhov
Sino-atrial node (SAN) dysfunctions and associated complications constitute important causes of morbidity in patients with cardiac diseases. The development of novel pharmacological therapies to cure these patients relies on the thorough understanding of both normal physiology and pathophysiology of the SAN. Among the studies of cardiac pacemaking, the mouse SAN is widely used due to its feasibility for modifications in the expression of different genes that encode SAN ion channels or calcium handling proteins...
December 2, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28056232/-analysis-of-cardiac-troponin-c-gene-tnnc1-c-g175c-mutation-in-a-chinese-pedigree-with-familial-hypertrophic-cardiomyopathy-and-the-correlation-between-genotype-and-phenotype
#9
X B Xing, F S Liu, F Wang, L Song, W N Zhao, J Liu, K C Zhang, Y Z Zhu, X F Shang, R Li, Y Liang
Objective: To investigate the genotype-phenotype correlation in Chinese familial hypertrophic cardiomyopathy (HCM )focusing on the cardiac troponin C gene TNNC1 c. G175C mutation. Methods: All family members of a Chinese pedigree with hypertrophic cardiomyopathy admitted in Third People's Hospital of Qingdao in February 2005 and 200 healthy volunteers were included in this study. The coding exons of 30 hypertrophic cardiomyopathy associated genes were identified by whole exons amplification and high-throughput sequencing in the proband, and the identified mutation were further detected through bi-directional Sanger sequencing in all family members and 200 healthy volunteers...
December 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28051234/neonatal-lupus-erythematosus-with-congenital-heart-block-in-twins
#10
Lamia Gargouri, Faiza Safi, Bayen Maalej, Souad Mallek, Fatma Turki, Imen Majdoub, Malek Akrout, Dorra Abid, Samir Kamoun, Abdelmajid Mahfoudh
Background - Neonatal lupus erythematosus is an uncommon acquired autoimmune disease caused by transplacental passage of maternal antibodies SSA/Ro, SSB/La or U1 ribonucleoproteins. The most common clinical manifestations are skin rash, cardiac lesions, thrombocytopenia, anemia and hepatosplenomegaly. Complete congenital heart block is usually irreversible needing a pacemaker implantation in two-thirds of cases. Cases report - We report neonatal lupus erythematosus with complete congenital heart block in twins...
July 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28050727/energy-harvesting-by-subcutaneous-solar-cells-a-long-term-study-on-achievable-energy-output
#11
L Bereuter, S Williner, F Pianezzi, B Bissig, S Buecheler, J Burger, R Vogel, A Zurbuchen, A Haeberlin
Active electronic implants are powered by primary batteries, which induces the necessity of implant replacement after battery depletion. This causes repeated interventions in a patients' life, which bears the risk of complications and is costly. By using energy harvesting devices to power the implant, device replacements may be avoided and the device size may be reduced dramatically. Recently, several groups presented prototypes of implants powered by subcutaneous solar cells. However, data about the expected real-life power output of subcutaneously implanted solar cells was lacking so far...
January 3, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28048561/su-f-t-452-influence-of-dose-calculation-algorithm-and-heterogeneity-correction-on-risk-categorization-of-patients-with-cardiac-implanted-electronic-devices-undergoing-radiotherapy
#12
P Iwai, L Nadler Lins
PURPOSE: There is a lack of studies with significant cohort data about patients using pacemaker (PM), implanted cardioverter defibrillator (ICD) or cardiac resynchronization therapy (CRT) device undergoing radiotherapy. There is no literature comparing the cumulative doses delivered to those cardiac implanted electronic devices (CIED) calculated by different algorithms neither studies comparing doses with heterogeneity correction or not. The aim of this study was to evaluate the influence of the algorithms Pencil Beam Convolution (PBC), Analytical Anisotropic Algorithm (AAA) and Acuros XB (AXB) as well as heterogeneity correction on risk categorization of patients...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047140/su-f-t-325-on-the-use-of-bolus-in-dosimetry-and-dose-reduction-for-pacemaker-and-defibrillator
#13
W Liu, D Zhu, S Trumpore, R Kenneth, S Higgins, R Nath, Z Chen
PURPOSE: Special attention is required in planning and administering radiation therapy to patients with cardiac implantable electronic devices (CIEDs), such as pacemaker and defibrillator. The range of dose to CIEDs that can induce malfunction is very large among CIEDs. Significant defects have been reported at dose as low as 0.15Gy. Failures causing discomfort have been reported at dose as low as 0.05Gy. Therefore, accurate estimation of dose to CIED and dose reduction are both important even if the dose is expected to be less than the often-used 2Gy limit...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045412/transcatheter-aortic-valve-implantation-with-the-edwards-sapien-3-valve-first-experiences-in-turkey
#14
Abdullah Nabi Aslan, Serdal Baştuğ, Hacı Ahmet Kasapkara, Hüseyin Ayhan, Hakan Süygün, Telat Keleş, Tahir Durmaz, Nihal Akar Bayram, Emine Bilen, Engin Bozkurt
OBJECTIVE: Transcatheter aortic valve implantation (TAVI) has shown promising results in patients with severe aortic stenosis (AS) at high risk for open heart surgery. We aimed to evaluate outcomes of patients who underwent TAVI with Edwards SAPIEN 3 Transcatheter Heart Valve (S3), a second-generation TAVI device. METHODS: Between November 2014 and June 2016, 31 high-risk patients received balloon-expandable S3 valve at Atatürk Training and Research Hospital that has the largest case series in Turkey...
December 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28038861/an-unusual-cause-of-thoracic-pain-cardiac-perforation-associated-with-a-pacemaker
#15
Eduardo Josué Flores-Umanzor, Rodolfo San Antonio, Margarida Pujol-Lopez, Rosario Jesús Perea
No abstract text is available yet for this article.
December 27, 2016: Medicina Clínica
https://www.readbyqxmd.com/read/28031691/cardiac-tamponade-after-right-ventricular-perforation-caused-by-screw-in-lead
#16
Lovel Giunio, Teo Boric, Cristijan Bulat, Dragan Dragicevic, Mislav Lozo
A 69-year-old man was admitted after syncope followed with chest pain and signs of cardiac tamponade. He had undergone permanent dual-chamber pacemaker implantation 3 weeks earlier. Transthoracic echocardiography (TTE) confirmed a pericardial effusion, and urgent pericardial drainage was performed. Right ventricular perforation caused by active-fixation (screw-in) lead was verified by multislice computed tomography. The lead was extracted under fluoroscopy and bedside TTE monitoring in the operating room with cardiothoracic surgery backup...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031276/patients-upgraded-to-cardiac-resynchronization-therapy-due-to-pacing-induced-cardiomyopathy-are-at-low-risk-of-life-threatening-ventricular-arrhythmias-a-long-term-cause-of-death-analysis
#17
Sergio Barra, Rudolf Duehmke, Rui Providencia, Eloi Marijon, Serge Boveda, Munmohan Virdee, Patrick Heck, Simon Fynn, David Begley, Andrew Grace, Sharad Agarwal
AIMS: Upgrade to cardiac resynchronization therapy (CRT) should be offered to patients who have developed pacing-induced cardiomyopathy with conventional right ventricular pacing. The extent to which these patients would also benefit from defibrillator back-up at the time of CRT upgrade is, however, unknown. METHODS AND RESULTS: Retrospective observational cohort study of 199 patients with pacing-induced cardiomyopathy and no history of sustained ventricular arrhythmia, including 104 upgraded to CRT-Pacemaker (CRT-P) and 95 upgraded to CRT-Defibrillator (CRT-D)...
December 28, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28018097/contraindications-for-video-capsule-endoscopy
#18
REVIEW
Dirk Bandorski, Niehls Kurniawan, Peter Baltes, Reinhard Hoeltgen, Matthias Hecker, Dominik Stunder, Martin Keuchel
Video capsule endoscopy (VCE) has been applied in the last 15 years in an increasing field of applications. Although many contraindications have been put into perspective, some precautions still have to be considered. Known stenosis of the gastrointestinal tract is a clear contraindication for VCE unless surgery is already scheduled or at least has been considered as an optional treatment modality. In patients with a higher incidence of stenosis, as in an established diagnosis of Crohn's disease, clinical signs of obstruction, prior radiation or surgical small bowel resection, a preceding test with the self-dissolving patency capsule can override this contraindication...
December 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28017393/long-term-outcome-after-crt-in-the-presence-of-mechanical-dyssynchrony-seen-with-chronic-rv-pacing-or-intrinsic-lbbb
#19
Ivan Stankovic, Christian Prinz, Agnieszka Ciarka, Ana Maria Daraban, Yujing Mo, Marit Aarones, Mariola Szulik, Stefan Winter, Aleksandar N Neskovic, Tomasz Kukulski, Svend Aakhus, Rik Willems, Wolfgang Fehske, Martin Penicka, Lothar Faber, Jens-Uwe Voigt
OBJECTIVES: The aim of this study was to compare the volumetric response and the long-term survival after cardiac resynchronization therapy (CRT) in patients with intrinsic left bundle branch block (LBBB) versus chronic right ventricular pacing (RVP) with respect to the presence of mechanical dyssynchrony (MD). BACKGROUND: Chronic RVP induces an iatrogenic LBBB and asynchronous left ventricular contraction that is potentially reversible by upgrading to CRT. METHODS: A total of 914 patients eligible for CRT (117 with conventional pacemakers and 797 with intrinsic LBBB) were included in the study...
December 9, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28011844/the-visible-heart%C3%A2-project-and-free-access-website-atlas-of-human-cardiac-anatomy
#20
Paul A Iaizzo
AIMS: Pre- and post-evaluations of implantable cardiac devices require innovative and critical testing in all phases of the design process. The Visible Heart(®) Project was successfully launched in 1997 and 3 years later the Atlas of Human Cardiac Anatomy website was online. The Visible Heart(®) methodologies and Atlas website can be used to better understand human cardiac anatomy, disease states and/or to improve cardiac device design throughout the development process. METHODS AND RESULTS: To date, Visible(®) Heart methodologies have been used to reanimate 75 human hearts, all considered non-viable for transplantation...
December 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
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