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Right bundle branch block

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https://www.readbyqxmd.com/read/28648429/ddd-pacemaker-for-severe-heart-failure-alternate-to-crt
#1
N C Krishnamani
Patients with severe systolic Heart Failure continue to have poor quality of life and increased mortality in spite of optimal medical management. Cardiac Resynchronization Therapy [CRT] is promising modality in patients with systolic heart failure and electrocardiographic [ECG] evidence of left bundle branch block [LBBB]. Cost issues continue to elude many deserving cases of this therapy in our society. Relatively cost effective Dual chamber pacing [DDD] with right atrial and isolated left ventricular pacing [RA-LV] can be a good alternative...
May 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28647466/incidence-indications-and-predicting-factors-of-permanent-pacemaker-implantation-after-transcatheter-aortic-valve-implantation-a-retrospective-study
#2
Mathieu Becker, Hugues Blangy, Thierry Folliguet, Thibault Villemin, Luc Freysz, Amandine Luc, Pablo Maureira, Batric Popovic, Arnaud Olivier, Nicolas Sadoul
BACKGROUND: As the number of transcatheter aortic valve implantation (TAVI) procedures is constantly increasing, it is important to consider common complications, such as pacemaker (PM) implantation, and their specific risk factors. AIMS: Echocardiographic, computed tomography and electrocardiographic data were analysed to determine the predicting factors, if any, associated with PM implantation. METHODS: This retrospective study included patients referred to Nancy University Hospital for a TAVI procedure from January 2013 to December 2015...
June 21, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28641846/conduction-abnormalities-and-permanent%C3%A2-pacemaker-implantation-after-transcatheter-aortic-valve-replacement-using-the-repositionable-lotus-device-the-united-kingdom-experience
#3
Rajiv Rampat, M Zeeshan Khawaja, Roland Hilling-Smith, Jonathan Byrne, Philip MacCarthy, Daniel J Blackman, Arvindra Krishnamurthy, Ashan Gunarathne, Jan Kovac, Adrian Banning, Raj Kharbanda, Sami Firoozi, Stephen Brecker, Simon Redwood, Vinayak Bapat, Michael Mullen, Suneil Aggarwal, Ganesh Manoharan, Mark S Spence, Saib Khogali, Maureen Dooley, James Cockburn, Adam de Belder, Uday Trivedi, David Hildick-Smith
OBJECTIVES: The authors report the incidence of pacemaker implantation up to hospital discharge and the factors influencing pacing rate following implantation of the LOTUS bioprosthesis (Boston Scientific, Natick, Massachusetts) in the United Kingdom. BACKGROUND: Transcatheter aortic valve replacement (TAVR) is associated with a significant need for permanent pacemaker implantation. Pacing rates vary according to the device used. The REPRISE II (Repositionable Percutaneous Replacement of Stenotic Aortic Valve Through Implantation of Lotus Valve System) trial reported a pacing rate of 29% at 30 days after implantation of the LOTUS device...
June 26, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28631207/qrs-width-as-a-predictor-of-right-ventricular-remodeling-after-percutaneous-pulmonary-valve-implantation
#4
C Paech, I Dähnert, F T Riede, R Wagner, T Kister, K Nieschke, F Wagner, R A Gebauer
Recent data showed a right ventricular dyssynchrony in patients with tetralogy of Fallot (TOF). Percutaneous pulmonary valve implantation (PPVI) has become an important procedure to treat a pulmonary stenosis and/or regurgitation of the right ventricular outflow tract in these patients. Despite providing good results, there is still a considerable number of nonresponders to PPVI. The authors speculated that electrical dysfunction of the right ventricle plays an underestimated role in the outcome of patients after PPVI...
June 19, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28630174/experimental-pathologic-and-clinical-findings-of-radiofrequency-catheter-ablation-of-para-hisian-region-from-the-right-ventricle-in-dogs-and-humans
#5
Yumei Xue, Xianzhang Zhan, Shulin Wu, Hongyue Wang, Yang Liu, Zili Liao, Hai Deng, Xuejing Duan, Shaoying Zeng, Dongpo Liang, Arif Elvan, Xianhong Fang, Hongtao Liao, Anand R Ramdat Misier, Jaap Jan J Smit, Andreas Metzner, Christian-Hendrik Heeger, Fangzhou Liu, Feng Wang, Zhiwei Zhang, Karl-Heinz Kuck, Siew Yen Ho, Feifan Ouyang
BACKGROUND: Ablation of para-Hisian accessory pathway (AP) poses high risks of atrioventricular block. We developed a pacing technique to differentiate the near-field (NF) from far-field His activations to avoid the complication. METHODS AND RESULTS: Three-dimensional mapping of the right ventricle was performed in 15 mongrel dogs and 23 patients with para-Hisian AP. Using different pacing outputs, the NF- and far-field His activation was identified on the ventricular aspect...
June 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28630171/distinctive-left-ventricular-activations-associated-with-ecg-pattern-in-heart-failure-patients
#6
Nicolas Derval, Josselin Duchateau, Saagar Mahida, Romain Eschalier, Frederic Sacher, Joost Lumens, Hubert Cochet, Arnaud Denis, Xavier Pillois, Seigo Yamashita, Yuki Komatsu, Sylvain Ploux, Sana Amraoui, Adlane Zemmoura, Philippe Ritter, Mélèze Hocini, Michel Haissaguerre, Pierre Jaïs, Pierre Bordachar
BACKGROUND: In contrast to patients with left bundle branch block (LBBB), heart failure patients with narrow QRS and nonspecific intraventricular conduction delay (NICD) display a relatively limited response to cardiac resynchronization therapy. We sought to compare left ventricular (LV) activation patterns in heart failure patients with narrow QRS and NICD to patients with LBBB using high-density electroanatomic activation maps. METHODS AND RESULTS: Fifty-two heart failure patients (narrow QRS [n=18], LBBB [n=11], NICD [n=23]) underwent 3-dimensional electroanatomic mapping with a high density of mapping points (387±349 LV)...
June 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28628222/the-value-of-electrocardiography-in-prognosticating-clinical-deterioration-and-mortality-in-acute-pulmonary-embolism-a-systematic-review-and-meta-analysis
#7
REVIEW
Amro Qaddoura, Geneviève C Digby, Conrad Kabali, Piotr Kukla, Zhong-Qun Zhan, Adrian M Baranchuk
The role of electrocardiography (ECG) in prognosticating pulmonary embolism (PE) is increasingly recognized. ECG is quickly interpretable, noninvasive, inexpensive, and available in remote areas. We hypothesized that ECG can provide useful information about PE prognostication. We searched MEDLINE, EMBASE, Google Scholar, Web of Science, abstracts, conference proceedings, and reference lists through February 2017. Eligible studies used ECG to prognosticate for the main outcomes of death and clinical deterioration or escalation of therapy...
June 19, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28627977/masquerading-bundle-branch-block-as-a-presenting-manifestation-of-complete-atrioventricular-block-that-caused-syncope
#8
Zhenyu Jiao, Ying Tian, Xinchun Yang, Xingpeng Liu
A 59-year-old male patient was admitted with the main complaints of stuffiness and shortness of breath. An ECG from precordial leads on admission showed masquerading bundle branch block. Syncope frequently occurred after admission. During syncope episodes, ECG telemetry showed that the syncope was caused by intermittent complete atrioventricular block, with the longest RR interval lasting for 4.36 s. At the gap of syncope, ECG showed complete right bundle branch block accompanied by alternation of left anterior fascicular block and left posterior fascicular block...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28624712/classification-of-ecg-heartbeats-using-nonlinear-decomposition-methods-and-support-vector-machine
#9
Kandala N V P S Rajesh, Ravindra Dhuli
Classifying electrocardiogram (ECG) heartbeats for arrhythmic risk prediction is a challenging task due to minute variations in the amplitude, duration and morphology of the ECG signal. In this paper, we propose two feature extraction approaches to classify five types of heartbeats: normal, premature ventricular contraction, atrial premature contraction, left bundle branch block and right bundle branch block. In the first approach, ECG beats are decomposed into intrinsic mode functions (IMFs) using ensemble empirical mode decomposition (EEMD)...
June 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28612907/safety-and-efficacy-of-cryoablation-without-the-use-of-fluoroscopy
#10
Edward Kozluk, Dariusz Rodkiewicz, Agnieszka Piątkowska, Grzegorz Opolski
BACKGROUND: Development of electroanatomical systems make it possible to perform ablations without the use of fluoroscopy. The aim of this study was to evaluate the efficacy and safety of cryoablation procedures without the use of fluoroscopy. METHODS: The study group consisted of 45 patients (14 female; age 36 ± 15 years) treated with cryoablation using the EnSite electroanatomical system: 10 with ventricular extrasystoly from the right ventricle, 6 with the arrhythmogenic site near the left coronary artery, 17 patients with Wolff-Parkinson-White syndrome (WPW), 2 patients with atrioventricular nodal reentrant tachycardia (AVNRT) type 2, 7 patients with AVNRT type 1, 3 patients with atrial tachycardia...
June 14, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28586614/frequency-indications-and-complications-of-pulmonary-artery-catheter-insertion-in-adult-open-heart-surgery-patients-of-a-tertiary-care-hospital
#11
Syed Shabbir Ahmed, Mohammad Irfan Akhtar, Rehana Kamal
OBJECTIVE: Patients presenting for cardiac surgery have unstable cardiovascular disease and haemodynamics with multiple coexisting diseases. Optimal monitoring in the perioperative period is very important for best perioperative outcome. The introduction of the flow-directed pulmonary artery catheter (PAC) into clinical practice is one of the most important and popular advances in the field of cardiac anaesthesia. The objective of the study was to determine the frequency, indications and complications of pulmonary artery catheter insertion in adult open-heart surgery patients...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28585685/pulmonary-artery-a-pivotal-site-for-catheter-ablation-in-idiopathic-rvot-ventricular-arrhythmias
#12
REVIEW
Chunmiao Wang, Yawen Zhang, Fangde Hong, Ying Huang
In patients without associated myocardial diseases, characterized by left bundle branch block (LBBB) and inferior axis morphologies, repetitive idiopathic right ventricular tachycardias (VTs) and ventricular premature contractions (VPCs) typically arise from right ventricular outflow tract (RVOT). Accumulated evidences have shown that radiofrequency catheter ablation (RFCA) is a useful treatment for patients with RVOT ventricular arrhythmias (VAs). Interestingly, several medical centers have showed that pulmonary artery (PA) is a potential novel site for catheter ablation in RVOT-like VAs, particularly in patients where termination of RVOT VAs at the usual site fails...
June 6, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28571189/evaluation-of-ecg-abnormalities-in-patients-with-asymptomatic-type-2-diabetes-mellitus
#13
Sahil Gupta, Rajeev Kumar Gupta, Malini Kulshrestha, Rajib Ratna Chaudhary
INTRODUCTION: Diabetes Mellitus (DM) is the most common chronic disease. DM is considered a Cardiovascular Disease (CVD) risk equivalent. Its macrovascular complications are associated with two-fold increased risk of premature atherosclerotic CVD. Most of the diabetics with cardiovascular involvement are asymptomatic. Electro Cardio Graph (ECG) abnormalities are found to be predictors of silent ischaemia in asymptomatic persons. An abnormal ECG response is associated with statistically significant high risk for cardiac mortality and morbidity...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28570306/analysis-of-electrocardiograms-associated-with-pediatric-electrical-burns
#14
Jennifer S McLeod, Alison E Maringo, Patrick J Doyle, Lisa Vitale, Justin D Klein, Christina M Shanti
The purpose of this study was to examine the utility of electrocardiograms (EKGs) for low-risk, low-voltage pediatric electrical burn victims. A retrospective chart review was conducted on 86 pediatric patients who presented to the children's hospital between 2000 and 2015 after sustaining electrical burns. Variables included source and estimated voltage, extent of injuries, length of stay, high risk factors, and EKG results. High risk factors included estimated voltage > 1000 V, lightning, tetany, symptoms, loss of consciousness, or seizures...
May 26, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28567361/unexpected-evolution-of-a-non-stenotic-lesion-in-the-left-main-coronary-artery-of-a-patient-with-non-st-segment-elevation-myocardial-infarction
#15
Alexandru Florin Ispas, Lionel Mangin, Alexandru Paziuc, Loic Belle
A 72-year-old man was referred to our catheterization laboratory 48 hours after a non-ST-segment elevation myocardial infarction. His medical history included coronary artery disease (CAD) (percutaneous coronary intervention of the right coronary artery and chronic total occlusion of the circumflex artery), atrial fibrillation (AF), and chronic kidney disease. An electrocardiogram showed a pre-existent left bundle-branch block and the patient's maximum cardiac troponin concentration was 8.64 µg/L (upper limit of normal: 0...
June 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28546456/electrocardiographic-predictors-of-heart-failure-with-reduced-versus-preserved-ejection-fraction-the-multi-ethnic-study-of-atherosclerosis
#16
Wesley T O'Neal, Matylda Mazur, Alain G Bertoni, David A Bluemke, Mouaz H Al-Mallah, Joao A C Lima, Dalane Kitzman, Elsayed Z Soliman
BACKGROUND: Several markers detected on the routine 12-lead ECG are associated with future heart failure events. We examined whether these markers are able to separate the risk of heart failure with reduced ejection fraction (HFrEF) from heart failure with preserved ejection fraction (HFpEF). METHODS AND RESULTS: We analyzed data of 6664 participants (53% female; mean age 62±10 years) from MESA (Multi-Ethnic Study of Atherosclerosis) who were free of cardiovascular disease at baseline (2000-2002)...
May 25, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28545281/-pre-and-post-orthotopic-heart-transplantation-electrocardiogram-characteristics-of-998-patients
#17
H Q Guan, Z J Chen, Y Zhou, J Liu, W X Sun, J Yuan, Y H Liao, N G Dong, J P Liu, K G Feng, Q Zhang, X Zhao, C Qian, F Hu
Objective: To analyze pre- and post-operation electrocardiograms (ECGs) features of patients underwent orthotopic heart transplantation (OHT), and provide evidences for identifying and analyzing post OHT ECGs. Methods: Nine hundreds and ninty-eight pre- and post- OHT standard 12-leads ECGs from 110 consecutive patients, who underwent OHT in our hospital from May 2008 to May 2014, were analyzed. Results: The mean heart rate(HR)was (86.9±16.4) beats per minute before OHT, and (100.0±0.4) beats per minute after OHT...
April 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28543265/stricter-criteria-for-left-bundle-branch-block-diagnosis-do-not-improve-response-to-crt
#18
Emanuele Bertaglia, Federico Migliore, Anna Baritussio, Antonio De Simone, Albino Reggiani, Domenico Pecora, Antonio D'Onofrio, Antonio Rapacciuolo, Gianluca Savarese, Attilio Pierantozzi, Biondino Marenna, Franco Ruffa, Monica Campari, Maurizio Malacrida, Giuseppe Stabile
BACKGROUND: Cardiac resynchronization therapy (CRT) has proved to be effective in patients with heart failure and left bundle branch block (LBBB). Recently, new ECG criteria have been proposed for the diagnosis of LBBB. These criteria are stricter than the current American Heart Association (AHA) criteria. We assessed the rate of echocardiographic response to CRT in patients with traditional LBBB versus patients who met the new criteria (strict LBBB). METHODS: Consecutive patients undergoing CRT were enrolled in the CRT MORE registry...
May 23, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28538417/clinical-and-electrocardiographic-characteristics-of-infarctional-ventricular-ectopic-beats-an-observational-study
#19
Yuechun Li, Shi Zhe-Wei, Zheng Cheng, Chen Guang-Yi, Zhou De-Pu, Li Xiao-Wei, Guan Xueqiang, Lin Jiafeng, Chen Peng
The purpose of this study was to explore the clinical and electrocardiographic characteristics of infarctional ventricular ectopic beats (IVEBs).Thirty-eight acute myocardial infarction (AMI) patients with IVEB and 109 AMI patients without IVEB were analyzed. The morphological changes of QRS complex, ST segment, and T wave were compared to IVEB with sinus rhythm from the same period and fully evolved phase.An IVEB QRS complex often revealed the right bundle branch block morphology, in addition to Q wave AMI; no-Q wave AMI also had IVEB...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538250/cardiac-abnormalities-in-type-1-facioscapulohumeral-muscular-dystrophy
#20
Fabien Labombarda, Maxime Maurice, Jean-Philippe Simon, Damien Legallois, Lucie Guyant-Maréchal, Anne-Laure Bedat-Millet, Philippe Merle, Eric Saloux, Françoise Chapon, Paul Milliez
OBJECTIVES: We conducted a retrospective study to characterize the cardiac complications in patients with genetically confirmed type 1 facioscapulohumeral dystrophy. METHODS: We reviewed baseline cardiac investigations, including electrocardiogram, Holter electrocardiogram and echocardiogram, as well as cardiac complications that occurred during follow-up in 56 adult patients (37 men, mean duration of disease: 20 years). RESULTS: Baseline evaluation revealed minor cardiac anomalies in 23 patients including incomplete right bundle branch block (iRBBB) in 13 patients (23%)...
June 2017: Journal of Clinical Neuromuscular Disease
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