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https://www.readbyqxmd.com/read/28072689/an-observational-study-on-the-effect-of-premature-ventricular-complex-burden-on-long-term-outcome
#1
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/28069327/early-ventricular-tachyarrhythmias-after-coronary-artery-bypass-grafting-surgery-is-it-a-real-burden
#2
Elisabeth M J P Mouws, Ameeta Yaksh, Paul Knops, Charles Kik, Eric Boersma, Ad J J C Bogers, Natasja M S de Groot
BACKGROUND: The prevalence of ventricular dysrhythmias (VD) [ventricular premature beats (VPBs), ventricular couplets (Vcouplets), ventricular runs (Vruns)] after coronary artery bypass grafting (CABG) has so far not been examined. The goal of this study is to examine characteristics of VD and whether they precede ventricular tachyarrhythmias (VTA) during a postoperative follow-up period of 5 days using continuous rhythm registrations. In addition, we determined predictive factors of VD/VTA...
January 6, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28058808/repeatability-of-ectopic-beats-from-48-hr-ambulatory-electrocardiography-the-atherosclerosis-risk-in-communities-aric-study
#3
Michelle L Meyer, Elsayed Z Soliman, Lisa M Wruck, Thomas H Mosley, Lynne E Wagenknecht, Anna K Poon, Eric A Whitsel, Alvaro Alonso, Gerardo Heiss, Laura R Loehr
BACKGROUND: The purpose of this study was to characterize the repeatability of ectopic beats, defined by premature atrial contractions (PACs) and premature ventricular contractions (PVCs), on ambulatory electrocardiogram (aECG) monitoring and evaluate the effect of length of aECG monitoring on the repeatability estimates. METHODS: This analysis includes 95 randomly selected participants from the Atherosclerosis Risk in Communities Study (ARIC; 2011-2013). The participants wore a Holter monitor for two, 48-hr periods separated by a mean of 38 days following an identical, standardized protocol...
January 6, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28040057/the-effects-of-mebudipine-on-myocardial-arrhythmia-induced-by-ischemia-reperfusion-injury-in-isolated-rat-heart
#4
R Ghiasi, M Mohammadi, M Majidinia, B Yousefi, A Ghiasi, R Badalzadeh
Reperfusion of the heart after an ischemic insult may lead to potentially lethal arrhythmias and cardimyocyte cell death via apoptosis and necrosis. In addition, previous studies showed that calcium channel blockers may have a protective role in the myocardium against arrhythmia and irreversible tissue injury. Therefore, this study was aimed to investigate the effects of mebudipine on myocardial arrhythmias and tissue injury induced by ischemia/reperfusion injury in isolated rat hearts. Male Wistar rats (250‑300g) were randomly divided to Sham group (without ischemia), control group (ischemia without drug), drug group (ischemia with mebudipine 0...
November 30, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28028497/providing-an-efficient-algorithm-for-finding-r-peaks-in-ecg-signals-and-detecting-ventricular-abnormalities-with-morphological-features
#5
Mohammad Pooyan, Fateme Akhoondi
Ventricular arrhythmias are one of the most important causes of annual deaths in the world, which may lead to sudden cardiac deaths. Accurate and early diagnosis of ventricular arrhythmias in heart diseases is essential for preventing mortality in cardiac patients. Ventricular activity on the electrocardiogram (ECG) signal is in the interval from the beginning of QRS complex to T wave end. Variations in the ECG signal and its features may indicate heart condition of patients. The first step to extract features of ECG in time domain is finding R peaks...
October 2016: Journal of Medical Signals and Sensors
https://www.readbyqxmd.com/read/28011584/effect-of-anisotropy-on-ventricular-vulnerability-to-unidirectional-block-and-reentry-by-single-premature-stimulation-during-normal-sinus-rhythm-in-rat-heart
#6
Stefano Rossi, Andrea Buccarello, Philip R Ershler, Robert L Lux, Sergio Callegari, Domenico Corradi, Luca Carnevali, Andrea Sgoifo, Michele Miragoli, Ezio Musso, Emilio Macchi
Single high-intensity premature stimuli when applied to the ventricles during ventricular drive of an ectopic site, as in the Winfree's "pinwheel experiment", usually induce reentry arrhythmias in the normal heart, while single low-intensity stimuli barely do. Yet, ventricular arrhythmia vulnerability during normal sinus-rhythm remains largely unexplored. With a view to define the role of anisotropy on ventricular vulnerability to unidirectional conduction block and reentry, we revisited the pinwheel experiment with reduced constraints in the in situ rat heart...
December 23, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27988280/comparison-of-efficacy-pattern-of-response-occurrence-of-arrhythmias-and-the-tolerability-of-nitroglycerine-and-isoprenaline-as-provocative-drugs-during-head-up-tilt-test
#7
Mukund Aravind Prabhu, Vivek Pillai, Jayaprakash Shenthar
BACKGROUND: Various protocols exist for performing head-up tilt test (HUTT). Serious ventricular arrhythmias have been reported during HUTT using Isoprenaline (ISO) provocation and their incidence with sublingual Nitroglycerine provocation is unknown. This study aims to assess the efficacy, pattern of response, tolerability, and frequency of arrhythmias during head-up tilt test with sublingual Nitroglycerine (NTG) provocation compared to ISO) provocation. METHODS: This is a retrospective observational study...
November 23, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/27912945/efficacy-and-safety-of-chinese-herbal-medicine-wenxin-keli-for-ventricular-premature-be-ats-a-systematic-review
#8
Mei He, Zhan Lv, Zheng-Wei Yang, Jiu-Ling Huang, Fu Liu
BACKGROUND: To evaluate the efficacy and safety of the Chinese herbal extract Wenxin Keli, alone or in combination with Western medicine, for ventricular premature beats. METHODS: This systematic review was registered at PROSPERO (registration number CRD42013003200). A systematic literature search of 8 core electronic databases and 3 clinical trial registries in Chinese and English, yielded 10 trials whose randomness verified by contacting the authors. The included trials were assessed by the Cochrane risk of bias tool...
December 2016: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/27909515/myocardial-biopsy-in-idiopathic%C3%A2-atrial-fibrillation-and-other-arrhythmias-nosological-diagnosis-clinical-and-morphological-parallels-and-treatment
#9
O V Blagova, A V Nedostup, E A Kogan, V A Sulimov, S A Abugov, A G Kupriyanova, V A Zaydenov, A E Donnikov, E V Zaklyazminskaya, E A Okisheva
BACKGROUND: The nosological nature of "idiopathic" arrhythmias and the effect of etiotropic and pathogenetic treatment are often unknown. METHODS AND RESULTS: 19 patients (42.6±11.3 years, 9 women) with atrial fibrillation (n = 16), supraventricular (n = 10) and ventricular (n = 4) premature beats, supraventricular (n = 2) and ventricular tachycardia (n = 1), left bundle branch block (n= 2), AV block (n = 2) without structural heart changes. Viruses were identified (polymerase chain reaction, PCR) along with measurement of anti-heart antibodies (AHA) and endomyocardial biopsy (EMB)...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27892602/the-analog-blanking-period-of-implantable-cardiac-rhythm-devices
#10
S Serge Barold, Andreas Kucher
BACKGROUND: Analog blanking periods (BP) that hold down the display of electrograms (EGM) in cardiac rhythm devices have received much less attention than the well-known digital blanking periods which do not influence the EGM display. In Biotronik devices, when a paced event initiates an analog BP in one chamber [right atrium (RA), right ventricle (RV) or left ventricle (LV)], an identical cross-chamber analog BP starts in the other 2 chambers. METHODOLOGY: All clinical observations were recorded from patients with Biotronik devices...
November 28, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27797880/ventricular-fibrillation-via-torsade-des-pointes-of-cardiac-sarcoidosis-with-preserved-left-ventricular-ejection-fraction
#11
Takayuki Sekihara, Eisaku Nakane, Kazutaka Nakasone, Moriaki Inoko
Generally, low left ventricular ejection fraction (LVEF) is a risk for ventricular arrhythmia in patients with cardiac sarcoidosis. We present a case of cardiac sarcoidosis with preserved LVEF that evoked ventricular fibrillation (VF). A 73-year-old woman with VF presented to our emergency department. She had a history of ocular sarcoidosis, with gradual thinning of the basal intraventricular septum. LVEF was 62% on the most recent echocardiography. The electrocardiogram after defibrillation showed complete atrioventricular block (CAVB) with QT segment prolongation and frequent ventricular premature beats...
October 25, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27788744/-clinical-analysis-of-19-cases-of-pregnant-women-with-rapid-arrhythmia-in-the-treatment-of-radiofrequency-catheter-ablation
#12
L Chu, J Zhang, Y N Li, D Y Long
: Objective: To investigate the risk of radiofrequency catheter ablation and maternal and infant in pregnant women with rapid arrhythmia during pregnancy. Methods: The clinical data of the 19 cases of pregnancy complicated with rapid arrhythmia were retrospectively analyzed and followed up, including the gestational week, the type of arrhythmia, the treatment, and the outcome of the mother and child in Beijing Anzhen Hospital of Capital Medical University from January 2002 to March 2016...
October 25, 2016: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/27777148/eleclazine-an-inhibitor-of-the-cardiac-late-sodium-current-is-superior-to-flecainide-in-suppressing-catecholamine-induced-ventricular-tachycardia-and-t-wave-alternans-in-an-intact-porcine-model
#13
Danilo Bacic, Juliana Saran Carneiro, Afonso Alves Bento, Bruce D Nearing, Sridharan Rajamani, Luiz Belardinelli, Richard L Verrier
BACKGROUND: The capacity of catecholamines to induce ventricular tachycardia (VT) is well documented. OBJECTIVE: The effectiveness of the novel cardiac late sodium inhibitor eleclazine in suppressing catecholamine-induced VT in a large animal model was compared with that of flecainide. METHODS: In 13 closed-chest anesthetized Yorkshire pigs, spontaneous VT and surges in T-wave alternans (TWA) level measured using the Modified Moving Average method were induced by epinephrine (2...
October 21, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27749954/short-term-effects-of-high-dose-caffeine-on-cardiac-arrhythmias-in-patients-with-heart-failure-a-randomized-clinical-trial
#14
Priccila Zuchinali, Gabriela C Souza, Maurício Pimentel, Diego Chemello, André Zimerman, Vanessa Giaretta, Joyce Salamoni, Bianca Fracasso, Leandro I Zimerman, Luis E Rohde
Importance: The presumed proarrhythmic action of caffeine is controversial. Few studies have assessed the effect of high doses of caffeine in patients with heart failure due to left ventricular systolic dysfunction at high risk for ventricular arrhythmias. Objective: To compare the effect of high-dose caffeine or placebo on the frequency of supraventricular and ventricular arrhythmias, both at rest and during a symptom-limited exercise test. Design, Setting, and Participants: Double-blinded randomized clinical trial with a crossover design conducted at the heart failure and cardiac transplant clinic of a tertiary-care university hospital...
December 1, 2016: JAMA Internal Medicine
https://www.readbyqxmd.com/read/27738397/qt-dispersion-and-ventricular-arrhythmias-in-children-with-primary-mitral-valve-prolapse
#15
Ebru Yalın İmamoğlu, Ayşe Güler Eroğlu
AIM: To investigate ventricular arrhythmias in children with primary mitral valve prolapse and to evaluate its relation with QT length, QT dispersion, autonomic function tests and heart rate variability measurements. MATERIAL AND METHODS: Fourty two children with mitral valve prolapse and 32 healthy children were enrolled into the study. Twelve-lead electrocardiograms, autonomic function tests, echocardiography and 24-hour rhythm Holter tests were performed. Electrocardiograms were magnified digitally...
September 2016: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/27732926/quantitative-analysis-of-ventricular-ectopic-beats-in-short-term-rr-interval-recordings-to-predict-imminent-ventricular-tachyarrhythmia
#16
Marisol Martínez-Alanis, Silvia Ruiz-Velasco, Claudia Lerma
BACKGROUND: Most approaches to predict ventricular tachyarrhythmias which are based on RR intervals consider only sinus beats, excluding premature ventricular complexes (PVCs). The method known as heartprint, which analyses PVCs and their characteristics, has prognostic value for fatal arrhythmias on long recordings of RR intervals (>70,000 beats). OBJECTIVE: To evaluate characteristics of PVCs from short term recordings (around 1000 beats) and their prognostic value for imminent sustained tachyarrhythmia...
October 3, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27708487/the-use-of-continuous-electrocardiographic-holter-monitoring-in-pediatric-cardiology
#17
Zijo Begic, Edin Begic, Senka Mesihovic-Dinarevic, Izet Masic, Senad Pesto, Mirza Halimic, Almira Kadic, Amra Dobraca
OBJECTIVE: To show the place and role of continuous electrocardiographic twenty-four-hour ECG monitoring in daily clinical practice of pediatric cardiologists. METHODS: According to protocol, 2753 patients underwent dynamic continuous ECG Holter monitoring (data collected from the "Register of ECG Holter monitoring" of Pediatric Clinic, UCC Sarajevo in period April 2003- April 2015). RESULTS: There were 50,5% boys and 49,5% girls, aged from birth to 19 years (1,63% - neonates and infants, 2,6% - toddlers, 9,95% - preschool children, 35,5% - gradeschoolers and 50,3% children in puberty and adolescence)...
July 16, 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/27664004/77-year-old-female-with-syncope
#18
Mahmoud A Abdelsalam, Jeffrey B Geske
CLINICAL INTRODUCTION: A 77-year-old female was referred for evaluation of an episode of syncope while eating breakfast. There was no history of fall, syncope, prodrome, dyspnoea, chest discomfort or palpitations. Medical history was notable for hyperlipidaemia and treated hypertension. Blood pressure was 140/90 mm Hg, pulse 85  beats per minute (BPM). No murmurs were present on cardiac examination. ECG revealed normal sinus rhythm with left ventricular (LV) hypertrophy (see online supplementary figure S1)...
September 23, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27662633/radionuclide-assessment-of-cardiac-function-and-dyssynchrony-in-children-with-idiopathic-ventricular-tachycardia
#19
Konstantin V Zavadovsky, Victor V Saushkin, Mikhail S Khlynin, Sergey V Popov, Yuri B Lishmanov
BACKGROUND: The aim of the study was to evaluate the impact of idiopathic ventricular tachycardia and premature ventricular beats on cardiac function and dyssynchrony and to elucidate relationships between data of scintigraphic and intracardiac electrophysiology studies (EPSs). METHODS: The study comprised 64 patients with idiopathic ventricular arrhythmias (VAs; median age of 14 years ranging from 8 to 18 years). The control group comprised 20 patients (median age of 12 ranging from 7 to 16 years) without cardiac arrhythmias...
November 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27642300/supine-frequent-ventricular-extrasystoles-in-a-pregnant-woman-without-structural-heart-disease
#20
Natália Stela Sandes Ferreira, Tatiana La Croix Barros, Ronaldo Altenburg Gismondi
Arrhythmias are the most common cardiac complication during gestational period and may occur in women with or without known structural heart disease. Premature extra beats and sustained tachyarrhythmias are the most common arrhythmias in pregnancy. Symptomatic episodes occur in 20-44% of pregnant women, usually as palpitations, dizziness, or syncope. We searched on Pubmed for ventricular premature complexes (VPC) in pregnant women and found no case reporting increased incidence of this arrhythmia while supine...
2016: Case Reports in Medicine
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