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("ECG" OR "EKG") AND ("Block")

Diana Rivero, Mohammad Alhamaydeh, Ziad Faramand, Mohammad Alrawashdeh, Christian Martin-Gill, Clifton Callaway, Barbara Drew, Salah Al-Zaiti
BACKGROUND: Nonspecific ST-T repolarization (NST) abnormalities alter the ST-segment for reasons often unrelated to acute myocardial ischemia, which could contribute to misdiagnosis or inappropriate treatment. We sought to define the prevalence of NST patterns in patients with chest pain and evaluate how such patterns correlate with the eventual etiology of chest pain and course of hospitalization. METHODS: This was a prospective observational study that included consecutive prehospital chest pain patients from three tertiary care hospitals in the U...
October 8, 2018: Heart & Lung: the Journal of Critical Care
Tatiana Soares, Maria Claudia Irigoyen, Sílvia Goldmeier
BACKGROUND: The Medical Control Program for Occupational Health establishes the required supplementary exams, according to the activity exercised by the worker and its inherent risks. The Regulatory Norm No. 35, recently deployed, stipulates that at-height workers must undergo electrocardiogram exams as an additional routine examination. OBJECTIVE: To evaluate the electrocardiographic standard in at-height. METHODOLOGY: A cross-sectional study, developed from May 2014 to January 2015 with male at-height workers...
May 2018: Revista da Associação Médica Brasileira
Pramod Theetha Kariyanna, Apoorva Jayarangaiah, Sudhanva Hegde, Jonathan D Marmur, Perry Wengrofsky, Mena Yacoub, Michael Post, Samy I McFarlane
Marijuana is the most common drug of abuse in the United States. Marijuana acts on cannabinoid receptors CB1, CB2 and another distinct endothelial receptor. Marijuana is known to cause tachycardia, hypotension and hypertension. Various arrhythmias including atrial fibrillation, atrial flutter, II degree AV block, ventricular fibrillation, ventricular tachycardia, asystole and brugada pattern associated with marijuana use have been reported. We here present an interesting case of Type I Brugada pattern in electrocardiography (ECG) in a 36 year old healthy African American male who presented after smoking four joints...
2018: American journal of medical case reports
Juan Martínez-Milla, Ángel José Maestre Bastardo, Marcelino Cortés
CLINICAL INTRODUCTION: A 76-year-old man with 50 years of smoking history was diagnosed in 2012 with diffuse interstitial lung disease, with radiological data of usual interstitial pneumonia. He came to the emergency room presenting with progression of dyspnoea for 1 week, concomitant with loss of 5 kg of weight, anorexia and poor general condition. He had tachypnoea at rest (30 breaths/min), peripheral cyanosis, speech interfered by cough and breathlessness, baseline oxygen saturation 90%, heart rate 40 beats/min and blood pressure 130/70 mm Hg...
October 3, 2018: Heart: Official Journal of the British Cardiac Society
Luca Segreti, Kristian Ujka, Tea Cellamaro, Giulio Zucchelli, Andrea Di Cori, Ezio Soldati, Maria Grazia Bongiorni
An 86-year-old man with unremarkable clinical history complaining of asthenia and dyspnea was diagnosed with low-flow low-gradient aortic stenosis [LFLG-AS; left ventricular ejection fraction (LVEF) 40% and transaortic mean gradient 37 mmHg, increasing to 52% and 55 mmHg after dobutamine infusion]. The patient underwent transcatheter aortic valve implantation (TAVI; Edwards CENTERA™ 29, Irvine, CA, USA). The procedure and the following hospital stay were free from complications, with no changes on electrocardiography (ECG)...
June 2018: Journal of Cardiology Cases
Lei Zhang, Junling He, Miaojun Lian, Li Zhao, Xudong Xie
Background: Periodic electrocardiography (ECG) at every clinical visit is generally performed for heart rhythm surveillance, and 24-h Holter ECG is usually used as the gold standard. We aimed to investigate the electrocardiographic features of persistent atrial fibrillation (AF) accompanied with second-degree atrioventricular block (AVB). Methods: From October 2012 to November 2015, 204 patients with an RR interval > 2.0 s before radiofrequency ablation were included...
September 2018: Acta Cardiologica Sinica
Weenita Pipitprapat, Sarawin Harnchoowong, Poonkiat Suchonwanit, Chutintorn Sriphrapradang
BACKGROUND: The smartphone apps provide a user-friendly option for measurement of heart rate (HR) by detecting pulsatile photoplethysmographic signals with built-in cameras from the fingertips, however, the validation study is limited. METHODS: We compared HR detected by the smartphone apps (App1 = Instant HR, App2 = Cardiio: HR Monitor, and App3 = Runtastic HR Monitor) with simultaneous standard ECG monitoring in the adult patients at the critical care unit...
October 1, 2018: Annals of Medicine
Chang Wang, Sanoj Chacko, Hoshiar Abdollah, Adrian Baranchuk
A 28-year-old previously healthy male presented with nonprodromal syncope and a 4-day history of chest pain, shortness of breath, and malaise. His ECG showed rapidly progressive high-degree AV block. His Suspicious Index in Lyme Carditis (SILC) score was 8, indicating high risk for Lyme carditis. Lyme serology revealed to be positive (anti-Lyme IgM). During the second day of hospitalization, the patient deteriorated his AV conduction, and a temporary-permanent pacemaker was implanted allowing ambulating in hospital the very same day...
September 28, 2018: Annals of Noninvasive Electrocardiology
Jack T Reynard, Oluwayemisi M Oshodi, Jenny Lai, Rachel Lai, George Bazoukis, Nikolaos Fragakis, Konstantinos P Letsas, Panagiotis Korantzopoulos, Fang-Zhou Liu, Tong Liu, Yunlong Xia, Gary Tse, Ka H Li
The QT interval along with its heart rate corrected form (QTc) are well- established ECG markers that have been found to be associated with malignant ventricular arrhythmogenesis. However, extensive pre-clinical and clinical investigations over the years have allowed for novel clinical ECG markers to be generated as predictors of arrhythmogenesis and sudden cardiac death. Repolarization markers include the older QTc, QT dispersion and newer Tpeak - Tend intervals, (Tpeak - Tend) / QT ratios, T-wave alternans (TWA), microvolt TWA and T-wave area dispersion...
September 26, 2018: Minerva Cardioangiologica
Andrés Ricardo Pérez-Riera, Raimundo Barbosa-Barros, Maria Tereza Sá Leitão Ramos Borges, Rodrigo Daminello-Raimundo, Luiz Carlos de Abreu, Kjell Nikus
Left posterior fascicular block (LPFB) is a rare intraventricular conduction disorder of rare occurrence, especially as an isolated entity. Its transient form is even rarer and maybe rate-independent or rate-dependent intermittent LPFB (phase 3 block, tachycardia-dependent and phase 4 block or bradycardia-dependent). We present a case of a young adult male whose baseline ECG/VCG showed the typical LPFB pattern. A treadmill stress test revealed rate-independent intermittent LPFB with random occurrence. Imaging exams ruled out structural heart disease...
September 26, 2018: Annals of Noninvasive Electrocardiology
Lars Gunnar Klaeboe, Pål H Brekke, Øyvind H Lie, Lars Aaberge, Kristina H Haugaa, Thor Edvardsen
Aims: Left bundle branch block (LBBB) is a frequent conduction abnormality after transcatheter aortic valve implantation (TAVI). We aimed to investigate how TAVI procedure related conduction abnormalities influence ventricular mechanics and prognosis, with particular focus on new-onset persistent LBBB. Methods and results: A total of 140 consecutive patients with severe aortic stenosis (83 ± 8 years old, 49% women) undergoing TAVI in a single tertiary centre were included in a repeated measures study...
September 20, 2018: European Heart Journal Cardiovascular Imaging
Peter J Kennel, Melvin Parasram, Daniel Lu, Diane Zisa, Samuel Chung, Samuel Freedman, Katherine Knorr, Timothy Donahoe, Steven M Markowitz, Hadi Halazun
We report a case of a 20-year-old man who presented to our institution with a new arrhythmia on a routine EKG. Serial EKG tracings revealed various abnormal rhythms such as episodes of atrial fibrillation, profound first degree AV block, and type I second degree AV block. He was found to have positive serologies for Borrelia burgdorferi . After initiation of antibiotic therapy, the atrial arrhythmias and AV block resolved. Here, we present a case of Lyme carditis presenting with atrial fibrillation, a highly unusual presentation of Lyme carditis...
2018: Case Reports in Cardiology
Adam Ioannou, Nikolaos Papageorgiou, Donald Singer, Constantinos G Missouris
Background: Cardiovascular disease is the leading cause of morbidity and mortality in developed countries. Many patients do not experience symptoms before a first major cardiovascular event. Resting electrocardiogram (ECG) may help identify asymptomatic individuals with a high risk of cardiovascular disease. Objective: We sought to determine the prevalence of ECG abnormalities in an apparently symptom-free adult population within a prospective registry. Methods: The registry consisted of 4739 consecutive apparently healthy individuals (age 62...
September 20, 2018: QJM: Monthly Journal of the Association of Physicians
Eberhard P Scholz, Patrick Fischer, Patrick Lugenbiel, Panagiotis Xynogalos, Patrick A Schweizer, Daniel Scherer, Dierk Thomas, Hugo A Katus, Edgar Zitron
PURPOSE: Left bundle branch block (LBBB) has a predictive value for response to cardiac resynchronization therapy as reported by Zareba et al. (Circulation 123(10):1061-1072, 2011). However, based on ECG criteria, the discrimination between complete LBBB and nonspecific intraventricular conduction delay is challenging. We tested the hypothesis that discrimination can be performed using standard electrophysiological catheters and a simple stimulation protocol. METHODS: Fifty-nine patients were analyzed retrospectively...
September 19, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Pramod Theetha Kariyanna, Apoorva Jayarangaiah, Abdullah Mahmood, Mitchell Hare, Nicholas Taklalsingh, Isabel M McFarlane
Idiopathic inflammatory myopathy (IIM) is a rare autoimmune myopathy that includes polymyositis, dermatomyositis, inclusion body myositis and autoimmune necrotizing myositis. Cardiac involvement was considered a rare occurrence in IIM however, recent reports suggests that cardiac involvement is a common feature and portends poor prognosis as it is usually encountered in advanced disease. IIM leads to myocarditis with subsequent development of myocardial fibrosis, cardiac conduction system disease and cardiomyopathy resulting in both systolic and diastolic heart failure...
2018: American journal of medical case reports
A Mantovani, R Rigolon, T Turino, I Pichiri, A Falceri, A Rossi, P L Temporelli, S Bonapace, G Lippi, G Zoppini, E Bonora, C D Byrne, G Targher
AIM: We aimed to assess the association between decreasing estimated glomerular filtration rate (eGFR) or abnormal albuminuria and the risk of certain cardiac conduction defects in patients with type 2 diabetes mellitus (T2DM). METHODS: We examined a hospital-based sample of 923 patients with T2DM discharged from our Division of Endocrinology over the years 2007-2014. Standard electrocardiograms (ECGs) were performed in all patients. eGFR was estimated by using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, whilst albuminuria was measured by an immuno-nephelometric method on morning spot urine samples...
September 5, 2018: Diabetes & Metabolism
Hui-Chun Huang, Kuo-Liong Chien, Hung-Ju Lin, Yen-Bin Liu
BACKGROUND/PURPOSE: A deleterious effect of complete left bundle-branch block (cLBBB) on left ventricular (LV) function has been established. The underutilization of cardiac resynchronization therapy has been noted in Taiwan and the Asian-Pacific area, but the reasons remain unclear. This study aimed to evaluate the prevalence and association of cLBBB and impaired LV ejection fraction (LVEF) in patients at the National Taiwan University Hospital (NTUH). METHODS: We enrolled 164,049 patients who underwent standard 12-lead electrocardiography (ECG) between January 2010 and December 2013 at NTUH...
September 4, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
Ahmed Tageldien Abdellah, Merhan El-Nagary
Background and objectives: P-wave dispersion (PWD) and Interatrial block (IAB) are common in heart failure (HF), and could be associated with adverse cardiac events. We aimed to assess the prevalence of PWD and IAB and their relationship with functional status, hospitalization and mortality rate in patients with systolic HF. Methods: We enrolled 110 HF patients in sinus rhythm & LVEF <50%. Patients had undergone clinical evaluation, 6 min walking test (6MWT), 12-lead electrocardiography (ECG), 24-h Holter ECG & echocardiogram...
September 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
Massimo Giammaria, Maria Teresa Lucciola, Claudia Amellone, Fabrizio Orlando, Giuseppe Mazzone, Sara Chiarenza, Mariolina Lovecchio, Sergio Valsecchi
BACKGROUND: Before subcutaneous implantable cardioverter defibrillator (S-ICD) implantation, the adequacy of sensing is required to be verified through surface ECG screening. Our objective was to determine whether S-ICD can be considered as a supplementary therapy in patients who are receiving biventricular (BIV) pacing. METHODS: We evaluated 48 patients with BIV devices to determine S-ICD candidacy during BIV, left ventricular (LV), right ventricular (RV) pacing, and intrinsic conduction (left bundle branch block-LBBB) by using an automated screening tool...
September 4, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
John J Wang, Olle Pahlm, James W Warren, John L Sapp, B Milan Horáček
BACKGROUND: Criteria for electrocardiographic detection of acute myocardial ischemia recommended by the Consensus Document of ESC/ACCF/AHA/WHF consist of two parts: The ST elevation myocardial infarction (STEMI) criteria based on ST elevation (ST↑) in 10 pairs of contiguous leads and the other on ST depression (ST↓) in the same 10 contiguous pairs. Our aim was to assess sensitivity (SE) and specificity (SP) of these criteria-and to seek their possible improvements-in three databases of 12‑lead ECGs...
August 13, 2018: Journal of Electrocardiology
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