keyword
MENU ▼
Read by QxMD icon Read
search

Left bundle branch block

keyword
https://www.readbyqxmd.com/read/28073567/the-influence-of-native-aortic-valve-calcium-and-transcatheter-valve-oversize-on-the-need-for-pacemaker-implantation-after-transcatheter-aortic-valve-insertion
#1
Fu'ad Al-Azzam, Kevin L Greason, Chayakrit Krittanawong, Eric E Williamson, Christopher J McLeod, Katherine S King, Verghese Mathew
OBJECTIVE: Native aortic valve calcium and transcatheter aortic valve oversize have been reported to predict pacemaker implantation after transcatheter aortic valve insertion. We reviewed our experience to better understand the association. METHODS: We retrospectively reviewed the records of 300 patients with no prior permanent pacemaker implantation who underwent transcatheter aortic valve insertion from November 2008 to February 2015. Valve oversize was calculated using area...
November 29, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28056014/prevalence-of-chagas-disease-in-a-u-s-population-of-latin-american-immigrants-with-conduction-abnormalities-on-electrocardiogram
#2
Mahmoud I Traina, Salvador Hernandez, Daniel R Sanchez, Jalal Dufani, Mohsin Salih, Adieb M Abuhamidah, Wilman Olmedo, Jason S Bradfield, Colin J Forsyth, Sheba K Meymandi
Chagas disease (CD) affects over six million people and is a leading cause of cardiomyopathy in Latin America. Given recent migration trends, there is a large population at risk in the United States (US). Early stage cardiac involvement from CD usually presents with conduction abnormalities on electrocardiogram (ECG) including right bundle branch block (RBBB), left anterior or posterior fascicular block (LAFB or LPFB, respectively), and rarely, left bundle branch block (LBBB). Identification of disease at this stage may lead to early treatment and potentially delay the progression to impaired systolic function...
January 5, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28054710/atypical-surface-ecg-complicating-the-diagnosis-of-bundle-branch-reentry-tachycardia
#3
Christopher Reithmann, Bernhard Herkommer, Thomas Remp, Michael Fiek
BACKGROUND: Typical left bundle branch block (LBBB) during ventricular tachycardia (VT) is a diagnostic criterion of bundle branch reentry tachycardia (BBRT) with activation of the right bundle in the anterograde direction. METHODS AND RESULTS: 11 patients (7 male, 60 ± 12 years) with non-ischemic cardiomyopathy (left ventricular ejection fraction 37 ± 16 %) presenting with BBRT were successfully treated by ablation of the right bundle. Among them, 5 patients had atypical surface ECGs differing from a typical left bundle branch block during the VT...
January 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28045723/rate-dependent-left-bundle-branch-block-in-an-ambulatory-surgery-patient-a-case-report
#4
Ashraf Farag, Justin Tsai, Sam Deeb, Deidre Putman-Garcia, John D Wasnick, Lydia A Conlay
A 52-year-old woman, ASA II (American Society of Anesthesia classification II) scheduled for cholecystectomy in an ambulatory center, exhibited a wide-complex tachycardia with ectopy on the monitor after induction with propofol and succinylcholine. Blood pressure remained stable; amiodarone was administered for presumed ventricular tachycardia. A 12-lead electrocardiogram (ECG) showed a new left bundle branch block (LBBB) at 98 beats per minute (bpm), which resolved when the heart rate slowed. Surgery was postponed, and both the LBBB and ectopy recurred frequently during the next 24 hours in the intensive care unit, particularly at heart rates >90 bpm...
December 30, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/28041584/hemodynamics-of-his-bundle-pacing
#5
REVIEW
Luca Alberti, Paolo Pieragnoli, Giuseppe Ricciardi, Luigi Padeletti
This review will focus on the feasibility of long term His bundle pacing and its effects on left ventricle (LV) hemodynamics. Compared with right ventricular pacing, His bundle pacing results in a more physiological electro-mechanical activation that contributes to preserve LV function. Moreover some studies showed a similar effect to biventricular pacing in patients with heart failure and left bundle branch block. Recent observations indicate that His bundle pacing should be considered as an optimal site to pace right ventricle in patients who are candidates for cardiac resynchronization therapy...
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28040280/management-and-outcome-of-patients-with-acute-myocardial-infarction-presenting-with-pacemaker-rhythm
#6
Noemi Bertel, Fabienne Witassek, Milo Puhan, Paul Erne, Hans Rickli, Barbara Naegeli, Giovanni Pedrazzini, Jean-Christophe Stauffer, Dragana Radovanovic
BACKGROUND: Diagnosis of acute myocardial infarction (MI) is challenging in pacemaker patients. Little is known about this patient group. METHODS: Patients with MI enrolled in the Swiss national AMIS Plus registry between January 2005 and December 2015 were analyzed. All patients with either paced ventricular rhythm or sinus rhythm with intrinsic ventricular conduction (IVC) were included in this study. Outcomes using crude data and propensity score matching were compared between patients with pacemaker rhythm and patients with IVC...
December 20, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28039208/clinical-significance-of-septal-deformation-patterns-in-heart-failure-patients-receiving-cardiac-resynchronization-therapy
#7
Aymeric Menet, Anne Bernard, Christophe Tribouilloy, Christophe Leclercq, Cécile Gevaert, Yves Guyomar, Raphaelle-Ashley Guerbaai, François Delelis, Anne-Laure Castel, Pierre Graux, Pierre-Vladimir Ennezat, Erwan Donal, Sylvestre Maréchaux
AIMS: Specific septal motion related to dyssynchrony is strongly linked to reverse remodelling, in patients with systolic heart failure (HF) receiving cardiac resynchronization therapy (CRT). We aimed to investigate the relationship between septal deformation patterns studied by longitudinal speckle tracking and clinical outcome following CRT. METHODS AND RESULTS: A total of 284 CRT candidates from two centres (HF NYHA classes II-IV, ejection fraction < 35%, QRS ≥ 120 ms) were prospectively included...
December 29, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28027906/assessment-of-smith-algorithms-for-the-diagnosis-of-acute-myocardial-infarction-in-the-presence-of-left-bundle-branch-block
#8
Andrea Di Marco, Ignasi Anguera, Marcos Rodríguez, Alessandro Sionis, Antoni Bayes-Genis, Jany Rodríguez, Albert Ariza-Solé, José Carlos Sánchez-Salado, Mario Díaz-Nuila, Mónica Masotti, Roger Villuendas, Paolo Dallaglio, Joan Antoni Gómez-Hospital, Ángel Cequier
INTRODUCTION AND OBJECTIVES: Recently, a new electrocardiography algorithm has shown promising results for the the diagnosis of acute myocardial infarction in the presence of left bundle branch block (LBBB). We aimed to assess these new electrocardiography rules in a cohort of patients referred for primary percutaneous coronary intervention (pPCI). METHODS: Retrospective observational cohort study that included all patients with suspected myocardial infarction and LBBB on the presenting electrocardiogram, referred for pPCI to 4 tertiary hospitals in Barcelona, Spain...
December 24, 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28024657/repeat-the-electrocardiogram
#9
Mazen M Kawji, David Luke Glancy
A 71-year-old diabetic woman with intermittent chest pain and left bundle branch block was admitted to the hospital for further assessment. A repeat electrocardiogram showed new anterior T-wave inversions concordant with the QRS complexes. Thus, she had myocardial ischemia, and coronary arteriography revealed left main and triple vessel coronary disease. She went for urgent coronary artery bypass operation.
December 2, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28024553/sustained-performance-of-a-physicianless-system-of-automated-prehospital-stemi-diagnosis-and-catheterization-laboratory-activation
#10
Brian J Potter, Alexis Matteau, Samer Mansour, Charbel Naim, Mounir Riahi, Richard Essiambre, Martine Montigny, Isabelle Sareault, François Gobeil
BACKGROUND: Treatment times for primary percutaneous coronary intervention frequently exceed the recommended maximum delay. Automated "physicianless" systems of prehospital cardiac catheterization laboratory (CCL) activation show promise, but have been met with resistance over concerns regarding the potential for false positive and inappropriate activations (IAs). METHODS: From 2010 to 2015, first responders performed electrocardiograms (ECGs) in the field for all patients with a complaint of chest pain or dyspnea...
January 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28024133/ranolazine-in-treatment-of-stable-angina-in-woman-with-atrial-fibrillation-and-intermittent-left-bundle-branch-block-a-case-report
#11
Natalia Yuriivna Osovska, Natalia Vitaliivna Kuzminova
Stable angina is the most frequent manifestation of ischemic heart disease (IHD) in women as compared to men (65% versus 37%). IHD in women has more favorable clinical course because myocardial infarction develops twice as rare as in men. Coronary angiography of angina patients demonstrates normal coronary arteries more frequently in women than in men. Microvascular angina (MVA) is found to be a rather common form of stable IHD as that particular diagnosis is made later in 20-30% of patients who previously underwent coronary angiography...
December 22, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
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
#12
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/28013281/prognostic-usefulness-of-contemporary-stress-echocardiography-in-patients-with-left-bundle-branch-block-and-impact-of-contrast-use-in-improving-prediction-of-outcome
#13
Anastasia Vamvakidou, Nikos Karogiannis, Vasilis Tzalamouras, Guy Parsons, Grace Young, Sothinathan Gurunathan, Roxy Senior
AIMS: Patients with symptomatic left bundle branch block (LBBB) may have myocardial ischaemia due to both coronary artery disease and/or cardiomyopathy (microcirculatory abnormalities) and may have concomitant left ventricular (LV) dysfunction. We aimed to assess the feasibility and prognostic value of contemporary stress echocardiography (SE), which can uncover both pathophysiologies in LBBB patients in routine clinical practice, and also aimed to assess the additive value of contrast SE...
December 24, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28012774/-intermittent-left-bundle-branch-block-reversal-to-normal-conduction-during-general-anesthesia
#14
Ana Maria Oliveira Correia da Silva, Emília Alexandra Gaspar Lima da Silva
BACKGROUND AND OBJECTIVES: Transient changes in intraoperative cardiac conduction are uncommon. Rare cases of the development or remission of complete left bundle branch block under general and locoregional anesthesia associated with myocardial ischemia, hypertension, tachycardia, and drugs have been reported. Complete left bundle branch block is an important clinical manifestation in some chronic hypertensive patients, which may also be a sign of coronary artery disease, aortic valve disease, or underlying cardiomyopathy...
December 21, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28011837/non-invasive-model-based-measures-of-ventricular-electrical-dyssynchrony-for-predicting-crt-outcomes
#15
Christopher T Villongco, David E Krummen, Jeffrey H Omens, Andrew D McCulloch
AIMS: Left ventricular activation delay due to left bundle branch block (LBBB) is an important determinant of the severity of dyssynchronous heart failure (DHF). We investigated whether patient-specific computational models constructed from non-invasive measurements can provide measures of baseline dyssynchrony and its reduction after CRT that may explain the degree of long-term reverse ventricular remodelling. METHODS AND RESULTS: LV end-systolic volume reduction (ΔESVLV) measured by 2D trans-thoracic echocardiography in eight patients following 6 months of CRT was significantly (P < 0...
December 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28011836/new-insights-from-a-computational-model-on-the-relation-between-pacing-site-and-crt-response
#16
Marieke Pluijmert, Peter H M Bovendeerd, Joost Lumens, Kevin Vernooy, Frits W Prinzen, T Delhaas
AIMS: Cardiac resynchronization therapy (CRT) produces clinical benefits in chronic heart failure patients with left bundle-branch block (LBBB). The position of the pacing site on the left ventricle (LV) is considered an important determinant of CRT response, but the mechanism how the LV pacing site determines CRT response is not completely understood. The objective of this study is to investigate the relation between LV pacing site during biventricular (BiV) pacing and cardiac function...
December 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28011830/electrical-remodelling-in-patients-with-iatrogenic-left-bundle-branch-block
#17
Elien B Engels, Thomas T Poels, Patrick Houthuizen, Peter P T de Jaegere, Jos G Maessen, Kevin Vernooy, Frits W Prinzen
AIMS: Left bundle branch block (LBBB) is induced in approximately one-third of all transcatheter aortic valve implantation (TAVI) procedures. We investigated electrophysiological remodelling in patients with TAVI-induced LBBB. METHODS AND RESULTS: This retrospective study comprises 107 patients with initially narrow QRS complex of whom 40 did not and 67 did develop persistent LBBB after TAVI. 12-lead electrocardiograms (ECGs) taken before TAVI, within 24 hours ('acute'), and 1-12 months after TAVI ('chronic') were used to reconstruct vectorcardiograms...
December 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28011802/novel-electrocardiographic-dyssynchrony-criteria-improve-patient-selection-for-cardiac-resynchronization-therapy
#18
András Vereckei, Zsuzsanna Szelényi, Valentina Kutyifa, Endre Zima, Gábor Szénási, Melinda Kiss, Gábor Katona, István Karádi, Béla Merkely
AIMS: We hypothesized that the greater the intra- or interventricular dyssynchrony (intraD, interD), the more effective cardiac resynchronization therapy (CRT) is. We sought to improve patient selection for CRT by using novel ECG dyssynchrony criteria. METHODS AND RESULTS: Left ventricular (LV) intraD was estimated by the absolute time difference between the intrinsicoid deflections (ID) in leads aVL and aVF divided by the QRS duration (QRSd): [aVLID - aVFID]/QRSd (%)...
December 23, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28009943/corevalve-prosthesis-depth-what-is-the-optimal-measurement-target
#19
Rafael Wolff, Sam Radhakrishnan, Hirotsugu Mitsuhashi, Anna Zavodni, Idan Roifman, John D Sparkes, Stephen E Fremes, Sabina Bakar-Irwin, Mark S Hansen, Bradley H Strauss
BACKGROUND: A major drawback of the transcatheter aortic valve replacement (TAVR) procedure using the self-expandable Medtronic CoreValve (MCV) prosthesis is the high incidence of conduction disturbances and the need for postprocedural permanent pacemaker (PPM) implantation. The depth of prosthesis implantation may be an important contributing factor. The study aim was to determine the relationship between angiographic measurements of the MCV prosthesis depth and the occurrence of new conduction disturbances and need for PPM after TAVR...
July 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27996100/complications-with-the-micra-tps-pacemaker-system-persistent-complete-heart-block-and-late-capture-failure
#20
Niels Holm, Andreas Müller, Rainer Zbinden
A Medtronic MICRA transcatheter pacing system (TPS) was implanted in an 86-year old patient with sick sinus syndrome and left bundle branch block after transfemoral aortic valve implantation. During implantation she developed a persistent complete heart block due to manipulation with the large bore delivery catheter. Two weeks later, acute pacemaker dysfunction occurred due to massive increase of pacing threshold and impedance without obvious pacemaker dislocation or myocardial perforation. Recurrent capture failure was seen with pacing output set at 5 V / 1...
December 20, 2016: Pacing and Clinical Electrophysiology: PACE
keyword
keyword
40295
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"