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https://www.readbyqxmd.com/read/28224924/left-bundle-branch-block-in-patients-with-acute-myocardial-infarction-presentation-treatment-and-trends-in-outcome-from-1997-to-2016-in-routine-clinical-practice
#1
Paul Erne, Juan F Iglesias, Philip Urban, Franz R Eberli, Hans Rickli, René Simon, Thomas A Fischer, Dragana Radovanovic
BACKGROUND: Whether patients with acute myocardial infarction presenting with new or presumed new left bundle-branch block (LBBB) should be treated in the same way as those presenting with ST-elevation (STE) is still a matter of debate. METHODS: Data from 28,358 patients enrolled in AMIS Plus from 1997 to 2016 were analyzed to evaluate differences in treatment and outcome of patients presenting with LBBB (n=2295) or STE (n=26,090) on their initial electrocardiogram using descriptive statistics and multivariate logistic regression...
February 2017: American Heart Journal
https://www.readbyqxmd.com/read/28222749/the-impact-of-trans-catheter-aortic-valve-replacement-induced-left-bundle-branch-block-on-cardiac-reverse-remodeling
#2
Laura E Dobson, Tarique A Musa, Akhlaque Uddin, Timothy A Fairbairn, Owen J Bebb, Peter P Swoboda, Philip Haaf, James Foley, Pankaj Garg, Graham J Fent, Christopher J Malkin, Daniel J Blackman, Sven Plein, John P Greenwood
BACKGROUND: Left bundle branch block (LBBB) is common following trans-catheter aortic valve replacement (TAVR) and has been linked to increased mortality, although whether this is related to less favourable cardiac reverse remodeling is unclear. The aim of the study was to investigate the impact of TAVR induced LBBB on cardiac reverse remodeling. METHODS: 48 patients undergoing TAVR for severe aortic stenosis were evaluated. 24 patients with new LBBB (LBBB-T) following TAVR were matched with 24 patients with a narrow post-procedure QRS (nQRS)...
February 22, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28217309/qrs-duration-versus-morphology-and-survival-after-cardiac-resynchronization-therapy
#3
Mand J H Khidir, Victoria Delgado, Nina Ajmone Marsan, Martin J Schalij, Jeroen J Bax
AIMS: The prognostic implications of QRS duration and morphology in heart failure patients treated with cardiac resynchronization therapy (CRT) remains debated. The present evaluation investigated the association between QRS duration (<150 vs. ≥150 ms) and QRS morphology (left bundle brand block [LBBB] vs. non-LBBB) and long-term prognosis of a large cohort of unselected heart failure patients treated with CRT according to contemporary guidelines. METHODS AND RESULTS: Of 973 heart failure patients treated with CRT (mean age 66...
February 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28217027/adenosine-stress-induced-left-bundle-branch-block-during-technetium-99m-tetrofosmin-myocardial-perfusion-imaging
#4
Mohan Roop Jayanthi, Arun Sasikumar, Arun Kumar Reddy Gorla, Ashwani Sood, Anish Bhattacharya, Bhagwant Rai Mittal
The occurrence of left bundle branch block (LBBB) in electrocardiogram during exercise testing is a relatively rare finding. The incidence of LBBB during exercise testing ranges from 0.5% to 1.1%. The mechanism of exercise-induced LBBB (EI-LBBB) is poorly understood, but ischemia is a proposed etiology. Stress myocardial perfusion imaging (MPI) can be useful in patients with EI-LBBB to rule out coronary artery disease. Adenosine vasodilator stress is the preferred mode of stress in patients with LBBB for performing stress-MPI...
January 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28207539/role-of-coronary-angiography-for-out-of-hospital-cardiac-arrest-survivors-according-to-postreturn-of-spontaneous-circulation-on-an-electrocardiogram
#5
Tae Rim Lee, Sung Yeon Hwang, Won Chul Cha, Tae Gun Shin, Min Seob Sim, Ik Joon Jo, Keun Jeong Song, Joong Eui Rhee, Yeon Kwon Jeong
Survivors of out-of-hospital cardiac arrest (OHCA) have high mortality and morbidity. An acute coronary event is the most common cause of sudden cardiac death. For this reason, coronary angiography is an important diagnostic and treatment strategy for patients with postcardiac arrest. This study aimed to identify the correlation between postreturn of spontaneous circulation (ROSC) on an electrocardiogram (ECG) and results of coronary angiography of OHCA survivors.We collected data from our OHCA registry from January 2010 to November 2014...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207421/lbbb-induced-by-quetiapine-overdose-a-case-report-and-literature-review
#6
Mazin Khalid, Ahmed Bakhit, Alex Dufresne, Deepak Sapkota, Abduljabbar Altekreti
No abstract text is available yet for this article.
February 15, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28202628/effects-of-upgrade-versus-de-novo-cardiac-resynchronization-therapy-on-clinical-response-and-long-term-survival-results-from-a-multicenter-study
#7
Mate Vamos, Julia W Erath, Zsolt Bari, Denes Vagany, Sven P Linzbach, Tatsiana Burmistrava, Carsten W Israel, Gabor Z Duray, Stefan H Hohnloser
BACKGROUND: Benefits of cardiac resynchronization therapy (CRT) on morbidity and mortality in selected patients are well known. Although the number of upgrade procedures from single- or dual-chamber devices to CRT is increasing, there are only sparse data on the outcomes of upgrade procedures compared with de novo CRT. This study aimed to evaluate clinical response and survival in patients receiving de novo versus upgrade CRT defibrillator therapy. METHODS AND RESULTS: Prospectively collected outcome data were compared in patients undergoing de novo or upgrade CRT defibrillator implantation at 3 implant centers in Germany and Hungary...
February 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28198522/cardiovascular-drug-utilization-post-implant-is-related-to-clinical-outcome-in-heart-failure-patients-receiving-cardiac-resynchronization-therapy
#8
Zoltan Bakos, Christian Reitan, Anna Werther-Evaldsson, Anders Roijer, Pyotr PLatonov, Rasmus Borgquist
BACKGROUND: In select patients with heart failure, cardiac resynchronization therapy (CRT) is the most common complementary treatment besides medical treatment. We aimed to assess the association between post CRT-implant changes in cardiovascular medication and cardiovascular mortality and heart failure hospitalization. METHODS: 211 patients on optimal medical therapy eligible for CRT were retrospectively included in this study (72 ± 7 years, 80% male, 66% left bundle branch block [LBBB], 48% dilated cardiomyopathy [DCMP]) and investigated at baseline and after 6 months ...
February 15, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28197280/predictors-of-permanent-pacemaker-implantation-after-coronary-artery-bypass-grafting-and-valve-surgery-in-adult-patients-in-current-surgical-era
#9
Bandar Al-Ghamdi, Yaseen Mallawi, Azam Shafquat, Alexandra Ledesma, Nadiah AlRuwaili, Mohamed Shoukri, Shahid Khan, Aly Al Sanei
BACKGROUND: Permanent pacemaker (PPM) implantation after cardiac surgery is required in 0.4-6% of patients depending on cardiac surgery type. PPM implantation in the early postoperative period may reduce morbidity and postoperative hospital stay. We performed a retrospective review of electronic medical records of adult patients with coronary artery bypass grafting (CABG), valve surgery, or both, over a 3-year period. Our aim was to identify predictors of PPM requirements and PPM dependency on follow-up in the current surgical era...
August 2016: Cardiology Research
https://www.readbyqxmd.com/read/28194611/using-three-dimensional-echocardiography-to-guide-left-ventricle-lead-position-in-cardiac-resynchronization-therapy-does-it-make-any-difference
#10
Haitham A Badran, John Z Kamel, Tarek R Mohamed, Mohamed A Abdelhamid
BACKGROUND: Cardiac resynchronization therapy (CRT) is an effective treatment for patients with advanced heart failure. Nearly 30% of candidates are inadequate responders. Proper patient selection, left ventricle (LV) lead placement optimization, and optimization of the programming of the CRT device are important approaches to improve outcome of CRT. We examined the role of three-dimensional (3D) echocardiography in determining the optimal LV lead position as a method of optimizing CRT response...
February 13, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28185080/wellens-syndrome-can-indicate-high-grade-lad-stenosis-in-case-of-left-bundle-branch-block
#11
Steffen Grautoff
Diagnosing acute myocardial infarction (AMI) in left bundle branch block (LBBB) is challenging. Modified Sgarbossa criteria are known to help detect AMI in LBBB. This is a report about an electrocardiogram (ECG) with Wellens' signs in combination with a pre-existing LBBB. The ECG of a patient with fluctuating chest pain showed very subtle and one day later more obvious Wellens'signs. A left anterior descending artery (LAD) stenosis was diagnosed and successfully treated. Wellens' syndrome can be diagnosed in a case of LBBB and help detect a high-grade LAD stenosis even if modified Sgarbossa criteria are not met...
February 9, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28183339/prevalence-and-associated-factors-of-resting-electrocardiogram-abnormalities-among-systemic-lupus-erythematosus-patients-without-cardiovascular-disease
#12
Hanan Al Rayes, Paula J Harvey, Dafna D Gladman, Jiandong Su, Arthy Sabapathy, Murray B Urowitz, Zahi Touma
BACKGROUND: Electrocardiogram (ECG) cardiovascular disease (CVD) abnormalities (ECG-CVD) are predictive of subsequent CVD events in the general population. Systemic lupus erythematosus (SLE) patients are vulnerable to CVD. We aimed to determine the prevalence of ECG-CVD in SLE patients and to examine the risk factors associated with ECG-CVD. METHODS: A 12-lead resting supine ECG was performed on consecutive adult patients attending the clinic. One cardiologist interpreted the ECGs...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28176418/impact-of-qrs-complex-duration-and-morphology-on-left-ventricular-reverse-remodelling-and-left-ventricular-function-improvement-after-cardiac-resynchronization-therapy
#13
Pieter van der Bijl, Mand Khidir, Melissa Leung, Bart Mertens, Nina Ajmone Marsan, Victoria Delgado, Jeroen J Bax
AIMS: To evaluate the impact of the interaction of QRS duration and morphology on left ventricular (LV) reverse remodelling and LV functional improvement in heart failure (HF) patients treated with cardiac resynchronization therapy (CRT). METHODS AND RESULTS: From an ongoing registry of HF patients treated with CRT according to contemporary guidelines, demographic, clinical, electrocardiographic (ECG) and echocardiographic characteristics were analysed. Patients were divided according to QRS duration and morphology: <150 ms vs...
February 8, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28169058/accuracy-of-computer-calculated-and-manual-qrs-duration-assessments-clinical-implications-to-select-candidates-for-cardiac-resynchronization-therapy
#14
Jan De Pooter, Milad El Haddad, Roland Stroobandt, Marc De Buyzere, Frank Timmermans
BACKGROUND: QRS duration (QRSD) plays a key role in the field of cardiac resynchronization therapy (CRT). Computer-calculated QRSD assessments are widely used, however inter-manufacturer differences have not been investigated in CRT candidates. METHODS: QRSD was assessed in 377 digitally stored ECGs: 139 narrow QRS, 140 LBBB and 98 ventricular paced ECGs. Manual QRSD was measured as global QRSD, using digital calipers, by two independent observers. Computer-calculated QRSD was assessed by Marquette 12SL (GE Healthcare, Waukesha, WI, USA) and SEMA3 (Schiller, Baar, Switzerland)...
January 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28164349/applicability-of-a-novel-formula-bogossian-formula-for-evaluation-of-the-qt-interval-in-heart-failure-and-left-bundle-branch-block-due-to-right-ventricular-pacing
#15
Gerrit Frommeyer, Harilaos Bogossian, Eleni Pechlivanidou, Philipp Conzen, Christopher Gemein, Kay Weipert, Inga Helmig, Ritvan Chasan, Victoria Johnson, Lars Eckardt, Christian W Hamm, Melchior Seyfarth, Bernd Lemke, Markus Zarse, Jörn Schmitt, Damir Erkapic
BACKGROUND: The presence of left bundle branch block (LBBB) due to right ventricular pacing represents a particular challenge in properly measuring the QTc interval. In 2014 a new formula for evaluation of QT interval in patients with LBBB was reported. METHODS: 145 patients with implantable cardioverter defibrillator (ICD) were included in this prospective multicenter observational study. Inclusion criteria were: no permanent right ventricular stimulation, an intrinsic QRS interval of <120ms and reduced left ventricular function...
February 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28150083/left-bundle-branch-block-contraction-patterns-identified-from-radial-strain-analysis-predicts-outcomes-following-cardiac-resynchronization-therapy
#16
Chun-Li Wang, Chia-Tung Wu, Yung-Hsin Yeh, Lung-Sheng Wu, Yi-Hsin Chan, Chi-Tai Kuo, Pao-Hsien Chu, Lung-An Hsu, Wan-Jing Ho
A left bundle-branch block (LBBB) contraction pattern identified from longitudinal-strain analysis predicts outcomes following cardiac resynchronization therapy (CRT). We investigated the use of an LBBB-contraction pattern identified from radial- or circumferential-strain analysis in the prediction of CRT benefits. Eighty CRT candidates were prospectively enrolled. Before CRT implantation, speckle-tracking analyses in three deformation directions were performed to determine whether an LBBB-contraction pattern was present...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28126337/reservations-about-the-selvester-qrs-score-in-left-bundle-branch-block-experience-in-patients-with-transcatheter-aortic-valve-implantation
#17
Thomas T Poels, Suzanne Kats, Leo Veenstra, Vincent van Ommen, Jos G Maessen, Frits W Prinzen
BACKGROUND: The Selvester QRS score (S-score) estimates myocardial scar using electrocardiographic criteria. We evaluated the S-score for left bundle branch block (LBBB). MATERIAL AND METHODS: Studied were 36 patients who developed persistent LBBB upon transcatheter aortic valve implantation (TAVI, TAVI-LBBB group) and 36 matched patients with persistent narrow QRS (TAVI-nQRS group). Electrocardiograms were recorded before and briefly after TAVI and during ~6months follow-up...
January 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28106000/left-bundle-branch-block-after-sutureless-transcatheter-and-stented-biological-aortic-valve-replacement-for-aortic-stenosis
#18
Madelien V Regeer, Lisanne R Merkestein, Arend de Weger, Vasileios Kamperidis, Frank van der Kley, Philippe J van Rosendael, Nina Ajmone Marsan, Robert J M Klautz, Martin J Schalij, Jeroen J Bax, Victoria Delgado
AIMS: Conventional aortic valve replacement (AVR), sutureless AVR (su-AVR) and transcatheter aortic valve implantation (TAVI) for severe aortic stenosis (AS) are associated with conduction abnormalities. The aim of the present study was to assess the incidence of left bundle branch block (LBBB) after su-AVR and TAVI, in comparison to conventional AVR. METHODS AND RESULTS: A total of 501 patients (mean age 74±8 years, 53% male) without preoperative cardiac conduction disturbances who underwent AVR or TAVI were included in the study...
January 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28089241/dynamic-t-wave-inversions-in-the-setting-of-left-bundle-branch-block
#19
H Pendell Meyers, Stephen W Smith
We illustrate the case a patient with left bundle branch block (LBBB) and electrocardiogram (ECG) changes consistent with those described in Wellens' syndrome. The characteristic ECG findings of Wellens' syndrome identify patients who have a particularly high rate of important coronary events in the near future, however these findings have previously been described only in the setting of normal conduction. A review of Wellens' syndrome, its criteria and pathophysiology, and its proposed appearance in the setting of LBBB is presented...
December 24, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28056014/prevalence-of-chagas-disease-in-a-u-s-population-of-latin-american-immigrants-with-conduction-abnormalities-on-electrocardiogram
#20
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 2017: PLoS Neglected Tropical Diseases
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