keyword
MENU ▼
Read by QxMD icon Read
search

Cardiac pacing

keyword
https://www.readbyqxmd.com/read/28730319/management-of-postoperative-junctional-ectopic-tachycardia-in-pediatric-patients-a-survey-of-30-centers-in-germany-austria-and-switzerland
#1
Andreas Entenmann, Miriam Michel, Ulrike Herberg, Nikolaus Haas, Matthias Kumpf, Matthias Gass, Friedemann Egender, Roman Gebauer
Postoperative junctional ectopic tachycardia (JET) is a frequent complication after pediatric cardiac surgery. Current recommendations on how and when to treat JET are inconsistent. We evaluated the management strategies of postoperative JET in German-speaking countries. We sent an online survey to 30 centers of pediatric cardiology that perform surgery for congenital heart defects in Germany (24), Austria (4), and Switzerland (2). The survey asked 18 questions about how and in what treatment sequence postoperative JET was managed...
July 21, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28725029/prominent-differences-in-left-ventricular-performance-and-myocardial-properties-between-right-ventricular-and-left-ventricular-based-pacing-modes-in-rats
#2
Wesam Mulla, Sharon Etzion, Sigal Elyagon, Roni Gillis, Michael Murninkas, Yuval Konstantino, Ingra Mannhardt, Thomas Eschenhagen, Noah Liel-Cohen, Yoram Etzion
Biventricular pacing is an important modality to improve left ventricular (LV) synchronization and long-term function. However, the biological effects of this treatment are far from being elucidated and existing animal models are limited and demanding. Recently, we introduced an implanted device for double-site epicardial pacing in rats and echocardiographically demonstrated favorable effects of LV and biventricular (LV-based) pacing modes typically observed in humans. Here, this new animal model was further characterized...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715078/polish-stress-echocardiography-registry-pol-stress-registry-a-multicenter-study-stress-echo-in-poland-numbers-settings-results-and-complications
#3
Edyta Płońska-Gościniak, Jarosław D Kasprzak, Szymon Olędzki, Jolanta Rzucidło-Resil, Piotr Gościniak, Tomasz Kukulski, Katarzyna Mizia-Stec, Wojciech Kosmala, Dariusz Kosior, Marta Marcinkiewicz-Siemion, Barbara Brzezińska, Beata Zaborska, Marcin Fijałkowski, Iwona Świątkiewicz, Andrzej Szyszka, Jan Błażejewski, Wojciech Witkiewicz, Zbigniew Gąsior, Danuta Sorysz, Agnieszka Olszanecka
BACKGROUND: Stress echocardiography (SE) is widely used in Europe. No collective data have been available on the use of SE in Poland until now. AIM: To evaluate the number of SE investigations performed in Poland, their settings, complications and results. METHODS: In this retrospective survey, referral cardiology centers in Poland were asked to fill in a questionnaire regarding SE examinations performed from May 01, 2014 to May 01, 2015. RESULTS: The study included data from 17 university hospitals and large community hospitals which performed 4611 SE examinations, including 4408 tests in patients investigated for coronary artery disease (CAD) and 203 tests to evaluate valvular heart disease (VHD)...
July 17, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28714039/current-role-of-echocardiography-in-cardiac-resynchronization-therapy
#4
REVIEW
Donato Mele, Matteo Bertini, Michele Malagù, Marianna Nardozza, Roberto Ferrari
Cardiac resynchronization therapy (CRT) is an established treatment for patients with heart failure and left ventricular systolic dysfunction. Patients are usually assessed by echocardiography, which provides a number of anatomical and functional information used for cardiac dyssynchrony assessment, prognostic stratification, identification of the optimal site of pacing in the left ventricle, optimization of the CRT device, and patient follow-up. Compared to other cardiac imaging techniques, echocardiography has the advantage to be non-invasive, repeatable, and safe, without exposure to ionizing radiation or nefrotoxic contrast...
July 17, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28709743/ischemic-stroke-with-cardiac-pacemaker-implantation-comparison-of-physiological-and-ventricular-pacing-modes
#5
Yuji Kato, Takeshi Hayashi, Ritsushi Kato, Norio Tanahashi, Masaki Takao
BACKGROUND: The clinical characteristics of ischemic stroke in patients with a pacemaker (PM) are not well understood. METHODS: Forty-six ischemic stroke patients with a PM were investigated retrospectively, and the impact of different pacing modes was compared. RESULTS: The patients were divided into a physiological pacing group (n = 22) and a ventricular pacing group (n = 24). The prevalence of atrial fibrillation (AF) was significantly higher in the ventricular pacing group (36% versus 75%; P = ...
July 11, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28708290/rationale-and-design-of-the-adaptresponse-trial-a-prospective-randomized-study-of-cardiac-resynchronization-therapy-with-preferential-adaptive-left-ventricular-only-pacing
#6
Gerasimos Filippatos, David Birnie, Michael R Gold, Bart Gerritse, Ahmad Hersi, Sandra Jacobs, Kengo Kusano, Christophe Leclercq, Wilfried Mullens, Bruce L Wilkoff
The AdaptResponse trial is designed to test the hypothesis that preferential adaptive left ventricular-only pacing with the AdaptivCRT(®) algorithm reduces the incidence of the combined endpoint of all-cause mortality and intervention for heart failure (HF) decompensation, compared with conventional cardiac resynchronization therapy (CRT), among patients with a CRT indication, left bundle branch block (LBBB) and normal atrioventricular (AV) conduction. The AdaptResponse study is a prospective, randomized, controlled, single-blinded, multicentre, clinical trial (ClinicalTrials...
July 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28707396/role-of-abnormal-repolarization-in-the-mechanism-of-cardiac-arrhythmia
#7
O E Osadchii
In cardiac patients, life-threatening tachyarrhythmia is often precipitated by abnormal changes in ventricular repolarization and refractoriness. Repolarization abnormalities typically evolve as a consequence of impaired function of outward K(+) currents in cardiac myocytes, which may be caused by genetic defects or result from various acquired pathophysiological conditions, including electrical remodelling in cardiac disease, ion channel modulation by clinically used pharmacological agents, and systemic electrolyte disorders seen in heart failure, such as hypokalaemia...
July 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28706864/surgical-outcomes-of-isolated-tricuspid-valve-procedures-repair-versus-replacement
#8
Julius I Ejiofor, Robert C Neely, Maroun Yammine, Siobhan McGurk, Tsuyoshi Kaneko, Marzia Leacche, Lawrence H Cohn, Prem S Shekar
BACKGROUND: Isolated tricuspid valve (ITV) operations are infrequent and the decision to operate is controversial. We report a series of ITV operations to outline the current disease status requiring this uncommon procedure with an emphasis on the results of tricuspid valve repair (TVr) versus replacement (TVR). METHODS: Using our prospective cardiac surgery database, 57 patients who underwent ITV operations between 01/02-03/14 were identified. Median follow up time was 3...
May 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28706863/non-functional-tricuspid-valve-disease
#9
REVIEW
Dale S Adler
Only 75% of severe tricuspid regurgitation is classified as functional, or related primarily to pulmonary hypertension, right ventricular dysfunction, or a combination of both. Non-functional tricuspid regurgitation occurs when there is damage to the tricuspid leaflets, chordae, papillary muscles, or annulus, independent of right ventricular dysfunction or pulmonary hypertension. The entities that cause non-functional tricuspid regurgitation include rheumatic and myxomatous disease, acquired and genetic connective tissue disorders, endocarditis, sarcoid, pacing, RV biopsy, blunt trauma, radiation, carcinoid, ergot alkaloids, dopamine agonists, fenfluramine, cardiac tumors, atrial fibrillation, and congenital malformations...
May 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28705745/massive-diltiazem-and-metoprolol-overdose-rescued-with-extracorporeal-life-support
#10
James A Chenoweth, Daniel K Colby, Mark E Sutter, Joshua B Radke, Jonathan B Ford, J Nilas Young, John R Richards
The management of overdoses of cardioactive medications in the emergency department can be challenging. The reversal of severe toxicity from one or more types of cardioactive medication may fail maximal medical therapies and require extreme invasive measures such as transvenous cardiac pacing and extracorporeal life support. We present a case of massive diltiazem and metoprolol overdose refractory to maximal medical therapy, including intravenous calcium, glucagon, vasopressors, high dose insulin, and lipid emulsion...
July 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28698007/solving-fatigue-related-problems-with-cardiac-arrest-survivors-living-in-the-community
#11
Young Joo Kim, Joan C Rogers, Ketki D Raina, Clifton W Callaway, Jon C Rittenberger, Mary Lou Leibold, Margo B Holm
AIM: The aim was to describe fatigue-related problems reported by post-cardiac arrest adults with chronic fatigue and energy conservation strategies generated using an Energy Conservation plus Problem Solving Therapy intervention. METHODS: Following an introduction to the intervention process outlined in a Participant Workbook, participants engaged in the telephone intervention by identifying one to two fatigue-related problems. They then brainstormed with the interventionist to identify potential strategies to reduce fatigue, tested them, and either modified the strategies or moved to the next problem over three to five sessions...
July 8, 2017: Resuscitation
https://www.readbyqxmd.com/read/28696087/leadless-technology-a-new-paradigm-for-cardiac-pacing
#12
Giulio Zucchelli, Valentina Barletta, Maria G Bongiorni
Leadless pacemaker (LP) technology was recently developed and introduced for clinical purpose as an alternative to traditional systems in order to reduce leads and pocket-related complications. Currently, two self-contained right ventricular pacemaker implanted by using a femoral percutaneous approach have been developed and initial results seem promising. Although the clinical use is still limited to the right ventricular pacing, the LP currently represents a valid and alternative solution in several settings, when the standard pacemaker cannot be used or its use is associated with higher risk of complications...
July 10, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28689254/desensitization-of-the-human-5-ht4-receptor-in-isolated-atria-of-transgenic-mice
#13
Ulrich Gergs, Julia Fritsche, Stephanie Fabian, Josepha Christ, Joachim Neumann
In the human cardiovascular system, serotonin (5-HT) exerts positive inotropic and chronotropic effects mediated by 5-HT4 receptors. Moreover, 5-HT4 receptor stimulation can cause arrhythmias in the human heart. Response to 5-HT can fade due to desensitization of the receptor system and/or activation of phosphodiesterases. In this study, we investigated a potential desensitization of the human 5-HT4(a) receptor expressed in the mouse heart. Therefore, we have used atrial preparations of transgenic (TG) mice with cardiac myocyte-specific overexpression of the human 5-HT4(a) receptor and their non-transgenic littermates (WT)...
July 8, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28687671/tachycardia-induced-j-wave-changes-in-patients-with-and-without-idiopathic-ventricular-fibrillation
#14
Yoshiyasu Aizawa, Seiji Takatsuki, Takahiko Nishiyama, Takehiro Kimura, Shun Kohsaka, Yoshiaki Kaneko, Yasuya Inden, Naohiko Takahashi, Satoshi Nagase, Yoshifusa Aizawa, Keichi Fukuda
BACKGROUND: To know the underlying mechanisms of J waves, the response to atrial pacing was studied in patients with idiopathic ventricular fibrillation (IVF) and patients with non-IVF. METHODS AND RESULTS: In 8 patients with IVF, the J-wave amplitude was measured before, during, and after atrial pacing. All patients had episodes of ventricular fibrillation without structural heart disease. The responses of J waves were compared with those of the 17 non-IVF control subjects who revealed J waves but no history of cardiac arrest and underwent electrophysiological study...
July 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28687248/device-therapy-for-rate-control-pacing-resynchronisation-and-av-node-ablation
#15
REVIEW
Dennis H Lau, Anand Thiyagarajah, Stephan Willems, Thomas Rostock, Dominik Linz, Martin K Stiles, David Kaye, Jonathan M Kalman, Prashanthan Sanders
Atrioventricular node ablation (AVNA) is generally reserved for patients whose atrial fibrillation (AF) is refractory all other therapeutic options, since the recipients will often become pacemaker dependent. In such patients, this approach may prove particularly useful, especially if a tachycardia-induced cardiomyopathy is suspected. Historically, an "ablate and pace" approach has involved AVNA and right ventricular pacing, with or without an atrial lead. There is also an evolving role for atrioventricular node ablation in patients with AF who require cardiac resynchronization therapy for treatment of systolic heart failure...
May 31, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28680621/development-of-ventricular-fibrillation-after-implantation-of-a-biventricular-implantable-cardioverter-defibrillator-what-is-the-mechanism
#16
Diego Chemello, Fernando Pivatto Júnior, Maurício Pimentel, Leandro Zimerman
Syncopal spells in heart failure patient with cardiovascular implantable electronic devices (CIED) require multiple assessments. T-wave oversensing is a well-described phenomenon that remains significant in modern implantable cardioverter defibrillators (ICD) systems. It can lead to inappropriate therapies and loss of biventricular pacing in those with cardiac resynchronization devices. Strategies to overcome this problem are important.
July 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28680604/atrial-flutter-in-a-patient-with-atrial-septal-defect-and-anomalous-venous-drainage-unusual-approach-for-ablation
#17
Ivo Roca-Luque, Nuria Rivas, Laura Dos, Jaume Francisco, Jordi Pérez-Rodon, Antònia Pijuan, David Garcia-Dorado, Àngel Moya
Atrial flutter ablation in CHD (Congenital Heart Disease) patients is a challenging procedure because of the possibility of multiple circuits. Electroanatomical mapping and pacing maneuvers are crucial to determine critical isthmus. Moreover, vascular abnormalities and residual cardiac defects need to be known before the ablation to decide the better strategy for ablation.
July 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28676183/preclinical-efficacy-and-safety-of-kcnh2-g628s-gene-therapy-for-postoperative-atrial-fibrillation
#18
Zhao Liu, Julie A Hutt, Barur Rajeshkumar, Yoshihiro Azuma, Kailai L Duan, J Kevin Donahue
BACKGROUND: Postoperative atrial fibrillation (POAF) is the most common complication occurring after cardiac surgery. Multiple studies have shown significantly increased risks of stroke, myocardial infarction, and death associated with POAF. Current prophylaxis strategies are inadequate to eliminate this problem. We examined the preclinical efficacy and safety of KCNH2-G628S gene transfer to prevent POAF. METHODS: Domestic pigs received AdKCNH2-G628S by epicardial atrial gene painting and atrial pacemaker implantation for continuous-burst pacing to induce atrial fibrillation...
May 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28674615/in-vivo-biocompatibility-and-pacing-function-study-of-silver-ion-based-antimicrobial-surface-technology-applied-to-cardiac-pacemakers
#19
James Shawcross, Ameet Bakhai, Ali Ansaripour, James Armstrong, David Lewis, Philip Agg, Roberta De Godoy, Gordon Blunn
INTRODUCTION: Evidence suggests that the rate of cardiovascular implantable electronic device (CIED) infections is increasing more rapidly than the rates of CIED implantation and is associated with considerable mortality, morbidity and health economic impact. Antimicrobial surface treatments are being developed for CIEDs to reduce the risk of postimplantation infection within the subcutaneous implant pocket. METHODS AND ANALYSIS: The feasibility of processing cardiac pacemakers with the Agluna antimicrobial silver ion surface technology and in vivo biocompatibility were evaluated...
2017: Open Heart
https://www.readbyqxmd.com/read/28670363/verapamil-suppresses-cardiac-alternans-and-ventricular-arrhythmias-in-acute-myocardial-ischemia-via-ryanodine-receptor-inhibition
#20
Yu-Lei Deng, Jun-Yan Zhao, Ji-Hua Yao, Qiang Tang, Le Zhang, Hong-Lian Zhou, Cun-Tai Zhang, Jia-Gao Lv, Xiao-Qing Quan
T-wave alternans (TWA) is a potent arrhythmia substrate under the conditions of acute myocardial ischemia. Abnormal intracellular calcium cycling contributes to the genesis of cardiac alternans. Ryanodine receptor (RyR) is a pivotal Ca(2+) cycling protein central to Ca(2+) signaling in the heart. Here, we investigated the potential role of RyR in cardiac alternans and ventricular arrhythmias in acute myocardial ischemia. Transmembrane action potentials were simultaneously recorded from epicardium and endocardium together with a transmural ECG and isometric contraction force in the arterially perfused left ventricular wedge preparations...
2017: American Journal of Translational Research
keyword
keyword
9667
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"