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Premature ventricular complexes

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https://www.readbyqxmd.com/read/29141592/case-report-electrical-storm-during-induced-hypothermia-in-a-patient-with-early-repolarization
#1
Patrick Badertscher, Michael Kuehne, Beat Schaer, Christian Sticherling, Stefan Osswald, Tobias Reichlin
BACKGROUND: Population based studies showed an association of early repolarization in the electrocardiogram (ECG) and a higher rate of sudden cardiac death presumably due to ventricular fibrillation. The triggers for ventricular fibrillation in patients with early repolarization are not fully understood. CASE PRESENTATION: We describe the case of a young patient with a survived ventricular fibrillation arrest while asleep followed by multiple episodes of recurrent ventricular fibrillation...
November 15, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29138409/predicting-the-origin-of-ventricular-arrhythmia-using-acoustic-cardiography
#2
Chin-Yu Lin, Shih-Lin Chang, Yenn-Jiang Lin, Li-Wei Lo, Yu-Feng Hu, Tze-Fan Chao, Fa-Po Chung, Ta-Chuan Tuan, Jo-Nan Liao, Yao-Ting Chang, Abigail Louise D Te, Shinya Yamada, Hao-Min Cheng, Shih-Hsien Sung, Ling Kuo, Hsing-Yuan Li, Ting-Yung Chang, Hoang Quang Minh, Simon Salim, Ting-Chung Huang, Shih-Ann Chen
This study aimed to examine the relationship between measurements related to heart sounds and the origin of ventricular arrhythmia. We retrospectively evaluated 45 patients undergoing catheter ablation with contemporaneous digital acoustic cardiography of the first heart sound (S1) and the second heart sound (S2). The patients with baseline wide QRS morphology (>120 ms or aberrant conduction), heart failure, valvular heart disease, chronic pulmonary disease, and obesity were excluded. Ventricular arrhythmias from the left ventricle had an increased S1 complexity score and S1 duration in comparison to adjacent sinus beats...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29127185/advances-in-computational-modelling-for-personalised-medicine-after-myocardial-infarction
#3
REVIEW
Kenneth Mangion, Hao Gao, Dirk Husmeier, Xiaoyu Luo, Colin Berry
Myocardial infarction (MI) is a leading cause of premature morbidity and mortality worldwide. Determining which patients will experience heart failure and sudden cardiac death after an acute MI is notoriously difficult for clinicians. The extent of heart damage after an acute MI is informed by cardiac imaging, typically using echocardiography or sometimes, cardiac magnetic resonance (CMR). These scans provide complex data sets that are only partially exploited by clinicians in daily practice, implying potential for improved risk assessment...
November 10, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29110198/surgical-management-of-craniosynostosis-in-the-setting-of-a%C3%A2-ventricular-shunt-a-case-series-and-treatment-algorithm
#4
Michael S Golinko, Danielle N Atwood, Eylem Ocal
PURPOSE: Cerebrospinal fluid diversion via ventricular shunt is a common treatment for hydrocephalus. Change in cranial morphology associated with a sutural fusion has been termed shunt-related or induced craniosynostosis (SRC) or craniocerebral disproportion (CCD). We present a series of patients with SRC who underwent cranial vault remodeling (CVR) and our treatment algorithm. METHODS: Thirteen patients were retrospectively reviewed who had SRC and CVR; 92% of patients had a ventriculoperitoneal (VP) shunt placed for largely intraventricular hemorrhage of prematurity (69% of patients) at a mean age of 2...
November 6, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29106575/is-the-stroke-volume-during-post-ectopic-beat-associated-with-ventricular-premature-complex-related-symptoms
#5
Hye Bin Gwag, Eun Kyoung Kim, Jin Kyung Hwang, Seung-Jung Park, Young Keun On, June Soo Kim, Kyoung-Min Park
Aims: This study aimed to investigate if increased stroke volume (SV) after a ventricular premature complex (VPC) was related to VPC-related symptoms. Methods and results: We selected patients having an isolated VPC during echocardiography from a prospective registry that included patients with a structurally normal heart and 24-h VPC >1%. Patients were divided into two groups according to the presence or absence of VPC-related symptoms (skipped beat or palpitation) when VPC occurred...
July 3, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29106546/clinical-validation-of-automatic-local-activation-time-annotation-during-focal-premature-ventricular-complex-ablation-procedures
#6
Juan Acosta, David Soto-Iglesias, Juan Fernández-Armenta, Manuel Frutos-López, Beatriz Jáuregui, Eduardo Arana-Rueda, Marcos Fernández, Diego Penela, Alejandro Alcaine, Lucas Cano, Alonso Pedrote, Antonio Berruezo
Aims: Current navigation systems incorporate algorithms for automatic identification of local activation time (LAT). However, data about their utility and accuracy in premature ventricular complex (PVC) ablation procedures are scarce. This study analyses the accuracy of an algorithmic method based on automatic annotation of the maximal negative slope of the unipolar electrogram within the window demarcated by the bipolar electrogram compared with conventional manual annotation during PVC ablation procedures...
November 2, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29071387/-ventricular-arrhythmias-what-has-been-confirmed-in-therapy
#7
REVIEW
D Duncker, J Bauersachs, C Veltmann
Ventricular arrhythmias include a wide range of potentially benign single ventricular premature contractions to ventricular tachycardia and ventricular fibrillation with a risk for sudden cardiac death. The diagnosis of ventricular arrhythmia is made by 12-lead electrocardiogram, 24 h Holter monitoring, an external or implantable loop recorder, or during in-hospital monitoring. Especially the diagnosis of wide complex tachycardias is challenging in terms of differentiating between ventricular tachycardia and supraventricular tachycardia with aberrant atrioventricular conduction...
October 25, 2017: Der Internist
https://www.readbyqxmd.com/read/29070771/imbalance-of-autonomic-nervous-systems-involved-in-ventricular-arrhythmia-after-splenectomy-in-dogs
#8
Nuttika Pastarapatee, Anusak Kijtawornrat, Chollada Buranakarl
The role of cardiac autonomic modulation on ventricular arrhythmia, known as ventricular premature complexes (VPC), after splenectomy was investigated. Twelve dogs undergoing splenectomy were divided into 2 groups: low VPC (<1,000/day, n=6) and high VPC groups (≥1,000/day, n=6). Electrocardiograph recording was performed prior to (D0), during the first three days (D1-3) and on day 9 (D9) after surgery. Arrhythmic indices, Tpeak-Tend , corrected QT interval and short-term variability of QT interval as well as heart rate variability (HRV) were evaluated...
October 26, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29064614/accuracy-of-the-pacemaker-event-recorder-versus-holter-ecg-to-detect-both-symptomatic-and-asymptomatic-ventricular-arrhythmias
#9
Stela Maria Vitorino Sampaio, Neyle Moara Craveiro, Francisco Darrieux, Ítalo Martins de Oliveira, Mauricio Scanavacca, Denise Hachul
Although new pacemakers can register cardiac rhythm, few studies were performed evaluating their accuracy in diagnosing ventricular arrhythmias (VA). This study aimed to assess the correlation and agreement between the pacemaker's monitor and the ambulatory Holter in detecting VA. METHODS/RESULTS: We studied 129 patients with pacemakers, mean age 68.6±19.1 years, 54.8% female. Once Holter monitoring was connected, the pacemakers' event counters were reset and clocks of both systems were synchronized to register ECG simultaneously...
October 24, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29055505/2017-acc-expert-consensus-decision%C3%A2-pathway-on-the-management%C3%A2-of-mitral-regurgitation-a-report-of-the-american-college-of-cardiology-task-force-on-expert-consensus-decision-pathways
#10
REVIEW
Patrick T O'Gara, Paul A Grayburn, Vinay Badhwar, Luis C Afonso, John D Carroll, Sammy Elmariah, Aaron P Kithcart, Rick A Nishimura, Thomas J Ryan, Allan Schwartz, Lynne Warner Stevenson
Mitral regurgitation (MR) is a complex valve lesion that can pose significant management challenges for the cardiovascular clinician. This Expert Consensus Document emphasizes that recognition of MR should prompt an assessment of its etiology, mechanism, and severity, as well as indications for treatment. A structured approach to evaluation based on clinical findings, precise echocardiographic imaging, and when necessary, adjunctive testing, can help clarify decision making. Treatment goals include timely intervention by an experienced heart team to prevent left ventricular dysfunction, heart failure, reduced quality of life, and premature death...
November 7, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29038823/left-ventricular-twist-in-hypertrophic-cardiomyopathy-predictor-of-nonsustained-ventricular-tachycardia
#11
O Candan, C Gecmen, A Kalaycı, E Bayam, A Guner, S Gunduz, S Cersit, M Ozkan
BACKGROUND: We investigated the efficacy of clinical and classic echocardiographic parameters in predicting the occurrence of nonsustained ventricular tachycardia (NsVT) in patients with hypertrophic cardiomyopathy (HCM). METHODS: The study comprised 59 patients with HCM (47 male, [80%]; mean age, 48.48 ± 14.16 years). Clinical, electrocardiographic, as well as classic two-dimensional and speckle-tracking echocardiography (STE) data were collected. All patients had Holter monitoring within 24-72 h of the echocardiographic examination...
October 16, 2017: Herz
https://www.readbyqxmd.com/read/29021867/concealed-conduction-of-premature-ventricular-complexes-resulting-in-av-nodal-block
#12
Ying Zi Oh, Vern Hsen Tan, Kelvin Ck Wong
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October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29021847/a-new-mapping-method-to-estimate-exit-sites-of-ventricular-arrhythmias-using-intracardiac-echocardiography-and-m-mode-for-catheter-ablation
#13
Osamu Inaba, Junichi Nitta, Syunsuke Kuroda, Masahiro Sekigawa, Masahito Suzuki, Yukihiro Inamura, Akira Satoh, Mitsuaki Isobe, Kenzo Hirao
BACKGROUND: Catheter ablation of premature ventricular complexes (PVCs) has been used as a curative therapy in many cases. Intracardiac ultrasound with a magnetic sensor probe has recently become available for catheter ablation. In this study, we assessed a new mapping method, contraction mapping, for determining the optimal ablation sites using intracardiac ultrasound and M-mode. This study sought to assess the accuracy of the new mapping method using intracardiac echocardiography. METHODS: Eighteen patients (10 males and eight females; mean age, 63±12 years) with 104 mapping points diagnosed as idiopathic PVCs were included in this study...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28989880/arrhythmias-in-type-2-diabetes-mellitus
#14
Gaurav Agarwal, Satish Kumar Singh
Chronic hyperglycaemia of Type 2 diabetes mellitus causes long term damage to heart resulting in coronary artery disease (CAD), myocardial infarction (MI), congestive heart failure (CHF), and sudden death from arrhythmias. AIMS: To study the prevalence of different types of arrhythmias in T2DM, particularly in association with Cardiac Autonomic Neuropathy (CAN). METHODS: A cross-sectional study including 100 patients of Type 2 Diabetes Mellitus (T2DM) presenting with cardiac arrhythmias, was done at our hospital over 2 years...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28975959/challenges-of-congenital-heart-disease-in-grown-up-patients
#15
Markus Schwerzmann, Fabienne Schwitz, Corina Thomet, Alexander Kadner, Jean-Pierre Pfammatter, Kerstin Wustmann
Nowadays, more than 90% of all children born with congenital heart disease (CHD) reach adult life. Although initially considered to be cured, the majority of them continue to need specialised follow-up because they require re-do interventions or are at increased risk of cardiovascular complications and premature death. Arrhythmias are the most common cause of unscheduled hospital visits for grown-up CHD (GUCH) patients, accounting for one third of emergency admissions in these patients. Some GUCH patients are also at increased risk for sudden cardiac death...
October 4, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28966313/analysis-of-morphological-characteristics-and-origins-of-idiopathic-premature-ventricular-contractions-under-a-12-lead-electrocardiogram-in-children-with-structurally-normal-hearts
#16
Jianbin Jiang, Yuee He, Huixian Qiu, Yuanhai Zhang, Maoping Chu, Yuechun Li, Qi Chen
Up to 40% of healthy children have premature ventricular complexes or contractions (PVCs) detected with 24-hour Holter monitoring. We aimed to investigate the morphological characteristics and origins of idiopathic PVCs under a 12-lead electrocardiogram in children with structurally normal hearts. All asymptomatic monomorphic PVC patients with structurally normal hearts under 18 years of age were included in this retrospective study. Characteristics of PVCs in lead V1 under a 12-lead electrocardiogram were classified as left bundle branch block (PVC-LBBB) or right bundle branch block (PVC-RBBB)...
October 21, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28965673/european-society-of-veterinary-cardiology-screening-guidelines-for-dilated-cardiomyopathy-in-doberman-pinschers
#17
REVIEW
G Wess, O Domenech, J Dukes-McEwan, J Häggström, S Gordon
BACKGROUND: Dilated cardiomyopathy (DCM) is the most common cardiac disease in large breed dogs and is inherited in Doberman Pinschers with a high prevalence (58%). OBJECTIVE: The European Society for Veterinary Cardiology convened a task force to formulate screening guidelines for DCM in Dobermans. RECOMMENDATIONS: Screening for occult DCM in Dobermans should start at three years of age and use both Holter monitoring and echocardiography...
October 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28964134/extremes-of-fractional-noises-a-model-for-the-timings-of-arrhythmic-heart-beats-in-post-infarction-patients
#18
Annette Witt, Frithjof Ehlers, Stefan Luther
We have analyzed symbol sequences of heart beat annotations obtained from 24-h electrocardiogram recordings of 184 post-infarction patients (from the Cardiac Arrhythmia Suppression Trial database, CAST). In the symbol sequences, each heart beat was coded as an arrhythmic or as a normal beat. The symbol sequences were analyzed with a model-based approach which relies on two-parametric peaks over the threshold (POT) model, interpreting each premature ventricular contraction (PVC) as an extreme event. For the POT model, we explored (i) the Shannon entropy which was estimated in terms of the Lempel-Ziv complexity, (ii) the shape parameter of the Weibull distribution that best fits the PVC return times, and (iii) the strength of long-range correlations quantified by detrended fluctuation analysis (DFA) for the two-dimensional parameter space...
September 2017: Chaos
https://www.readbyqxmd.com/read/28964108/stochastic-spontaneous-calcium-release-events-and-sodium-channelopathies-promote-ventricular-arrhythmias
#19
Fernando O Campos, Yohannes Shiferaw, Edward J Vigmond, Gernot Plank
Premature ventricular complexes (PVCs), the first initiating beats of a variety of cardiac arrhythmias, have been associated with spontaneous calcium release (SCR) events at the cell level. However, the mechanisms underlying the degeneration of such PVCs into arrhythmias are not fully understood. The objective of this study was to investigate the conditions under which SCR-mediated PVCs can lead to ventricular arrhythmias. In particular, we sought to determine whether sodium (Na(+)) current loss-of-function in the structurally normal ventricles provides a substrate for unidirectional conduction block and reentry initiated by SCR-mediated PVCs...
September 2017: Chaos
https://www.readbyqxmd.com/read/28960715/evaluation-of-echocardiography-and-cardiac-biomarker-concentrations-in-dogs-with-gastric-dilatation-volvulus
#20
Brent D Aona, John E Rush, Elizabeth A Rozanski, Suzanne M Cunningham, Claire R Sharp, Lisa M Freeman
OBJECTIVE: To assess abnormalities in concentrations of cardiac troponin I (cTnI), lactate, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) in relation to arrhythmias, echocardiographic measurements, and survival in dogs with gastric dilatation volvulus (GDV). DESIGN: Prospective observational study. SETTING: University hospital. ANIMALS: Twenty-two dogs with naturally occurring GDV. SAMPLES: Concentrations of cTnI, plasma lactate, and NT-proBNP were recorded at presentation to the emergency room, the time closest to echocardiography, and the highest recorded concentrations during hospitalization...
September 28, 2017: Journal of Veterinary Emergency and Critical Care
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