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

Alexandre Gamet, Bruno Degand, François Le Gal, Nicolas Bidegain, Anne Delaubier, Brigitte Gilbert-Dussardier, Luc Christiaens, Rodrigue Garcia
BACKGROUND: Patient prognosis in type 1 myotonic dystrophy (DM1) is very poor. Annual 24-hour holter ECG monitoring is recommended but its relevance is debated. Main objective was to determine whether holter ECG parameters could predict global death in DM1 patients and secondarily to assess whether they could predict cardiovascular events and sudden cardiac death, to compare DM1 patients and healthy controls, and to assess their evolution in DM1 over a 5-year period. METHODS: This retrospective study included genetically confirmed DM1...
August 12, 2018: Annals of Noninvasive Electrocardiology
Jamie Sy Ho, Edwin R Chilvers, Muhunthan Thillai
Sarcoidosis is a multisystem granulomatous disease predominantly affecting the lungs, with increased risk of cardiovascular disease, pulmonary hypertension and cardiac sarcoidosis (CS), the latter due to direct granuloma infiltration. Sarcoidosis is often managed by chest physicians who need to understand the diagnostic pathways and initial management plans for patients with cardiac involvement. Areas covered: The most serious consequence of CS is sudden cardiac death due to ventricular tachyarrhythmias or complete atrioventricular block...
August 13, 2018: Expert Review of Respiratory Medicine
James R Kimber, Syed Rafay Ali Sabzwari, Hiwot Ayele
Arrhythmogenic right ventricular cardiomyopathy (ARVC), is a heritable condition that is an important, and under-recognized cause of sudden cardiac death. Microscopically, it is represented by fibrofatty replacement of myocardium involving the right ventricular inflow area, apex, and infundibulum. Common clinical manifestations of ARVC include palpitations, syncope, chest pain, dyspnea, and sudden cardiac death. This is a case of a 25-year-old male with a history of thalassemia, and tonic-clonic seizure status post head trauma with cystic encephalomalacia in left parietal lobe who described recurrent syncope...
June 7, 2018: Curēus
Daniel F Kupsky, Karthikeyan Ananthasubramaniam, James Lee
CLINICAL INTRODUCTION: An 82-year-old man with a history of coronary artery bypass surgery, hypertension and small bowel gastrointestinal stromal tumour underwent cardiac risk evaluation prior to surgical resection of his tumour. He was asymptomatic from a cardiovascular perspective, but his activity level was less than four metabolic equivalents. Physical examination was notable for a 2/6 systolic murmur at the apex. ECG showed sinus rhythm. A transthoracic echocardiogram was performed (figure 1 and online supplementary video 1)...
August 9, 2018: Heart: Official Journal of the British Cardiac Society
Antonio Mangieri, Giuseppe Lanzillo, Letizia Bertoldi, Richard J Jabbour, Damiano Regazzoli, Marco B Ancona, Akihito Tanaka, Satoru Mitomo, Stefano Garducci, Claudio Montalto, Matteo Pagnesi, Francesco Giannini, Manuela Giglio, Matteo Montorfano, Alaide Chieffo, Josep Rodès-Cabau, Fabrizio Monaco, Gabriele Paglino, Paolo Della Bella, Antonio Colombo, Azeem Latib
OBJECTIVES: This study sought to determine predictors of advanced conduction disturbances requiring late (≥48 h) permanent pacemaker replacement (PPM) after transcatheter aortic valve replacement (TAVR). METHODS: Data of consecutive patients were identified by retrospective review of a TAVR database of a single center in Milan, Italy, between October 2007 and July 2015. We defined delta PR (ΔPR) and delta QRS (ΔQRS) interval as the difference between the last PR and QRS length available 48 h after TAVR and the baseline PR and QRS length...
August 13, 2018: JACC. Cardiovascular Interventions
Robbert Zusterzeel, Jose Vicente, Roberto Ochoa-Jimenez, Jun Zhu, Jean-Philippe Couderc, Esther Akinnagbe-Zusterzeel, David G Strauss
The presence of left bundle branch block (LBBB) is an important predictor of benefit from cardiac resynchronization therapy (CRT). New "strict" electrocardiographic (ECG) criteria for LBBB have been shown to better predict benefit from CRT. The "strict" LBBB criteria include: QRS duration ≥140 ms (men) or ≥130 ms (women), QS- or rS-configurations of the QRS complex in leads V1 and V2, and mid-QRS notching or slurring in ≥2 of leads V1, V2, V5, V6, I and aVL. The "strict" LBBB criteria are not regularly used and most hospital automated ECG systems and physicians still use more conventional LBBB criteria...
August 1, 2018: Journal of Electrocardiology
Viktor Szatmári, Yuan Ji, Bianca van Herwijnen, Mei Feng, Michael Zhou Wang, Alexandre Bossu, Marcel A G van der Heyden
BACKGROUND: The inward rectifier inhibitor pentamidine analogue 6 (PA-6) is effective in cardioversion of goats with persistent rapid pacing induced atrial fibrillation (AF) and is not proarrhythmic in dogs with experimental chronic 3rd-degree AV block. Efficacy and safety in the clinical setting are unknown. HYPOTHESIS: That PA-6 would be effective in converting AF to sinus rhythm (SR) in dogs with naturally occurring AF, without the presence of overt adverse effects...
August 5, 2018: Journal of Veterinary Internal Medicine
Anandhi D, Vinay R Pandit, Tamilarasu Kadhiravan, Soundaravally R, K N J Prakash Raju
BACKGROUND: Consumption of yellow oleander (Cascabela thevetia) is a popular method of intentional self-harm in South India. OBJECTIVES: The objectives of this study were to identify the cardiac arrhythmias and electrolyte abnormalities in yellow oleander poisoning and to identify the association between electrolyte abnormalities, cardiac glycoside concentrations at admission and the severity of cardiotoxicity. This study was also designed to identify clinical and biochemical parameters at presentation which predict serious arrhythmias and determinants of mortality...
August 3, 2018: Clinical Toxicology
Yuhi Fujimoto, Kenji Yodogawa, Yu-Jin Maru, Eiichiro Oka, Hiroshi Hayashi, Teppei Yamamoto, Yu-Ki Iwasaki, Meiso Hayashi, Wataru Shimizu
BACKGROUND: Early recurrence of atrial fibrillation (AF) is common following a successful electrical cardioversion (ECV). The purpose of this study was to investigate the hypothesis that AF recurrence is related to atrial electrical inhomogeneity, which may influence the P wave characteristics. METHODS: Two hundred ninety-one consecutive persistent AF patients who underwent ECV were enrolled, and evaluated for AF recurrences one month after the ECV. Patients with open-heart surgery, a history of catheter ablation, and an unsuccessful ECV were excluded...
July 29, 2018: International Journal of Cardiology
Mohammed Al-Hijji, Mohamad Alkhouli, Fahad Alqahtani, Vuyisile T Nkomo, Kevin L Greason, David R Holmes
Electrocardiographic (ECG) strain has been linked to excess cardiovascular morbidity and mortality in asymptomatic patients with aortic stenosis. We aim to determine the differential impact of baseline ECG-strain on long-term mortality after transcatheter aortic valve implantation (TAVI). Patients who underwent TAVI from January 2012 to March 2016 at Mayo Clinic were included. Left ventricular (LV) strain was defined as the presence of ≥1mm convex ST-segment depression with asymmetrical T-wave inversion in leads V5 to V6 on baseline ECG...
June 21, 2018: American Journal of Cardiology
Sheheryar Muhammad, Robert J Simonelli
Purpose: A case report of a patient who presented with an acute onset, fluctuating atrioventricular (AV) block and was diagnosed with Lyme carditis is presented. Summary: A 55-year-old man with progressively worsening generalized malaise, flu-like symptoms, dyspnea on exertion, and near syncope was admitted with bradycardia (heart rate was between 20 and 30 beats per minute upon admission). He endorsed having several tick bites after which he developed erythema migrans on his arm and abdomen. An electrocardiogram (ECG) revealed a second-degree AV block, fluctuating between Mobitz type I and Mobitz type II heart block, with a P-R interval of 300 ms...
July 2018: Hospital Pharmacy
Rizwan Ali, Arooj Tahir, Muhammad Nadeem, Mohammed I Shakhatreh, Brett Faulknier
Orthodromic atrioventricular reentrant tachycardia (AVRT) is the second-most-common form of supraventricular tachycardia (SVT) and is inducible in approximately 55% of individuals with Wolff Parkinson White (WPW) syndrome. Antidromic AVRT, where the accessory atrioventricular connection is used as the antegrade limb and the atrioventricular node serves as the retrograde limb of the circuit, has been clinically documented in less than 5% of patients with WPW syndrome and may be induced in less than 10% of these WPW cases in the electrophysiology laboratory...
May 17, 2018: Curēus
Maria Luce Caputo, Antonius van Stipdonk, Annekatrin Illner, Gabriele D'Ambrosio, François Regoli, Giulio Conte, Tiziano Moccetti, Catherine Klersy, Frits W Prinzen, Kevin Vernooy, Angelo Auricchio
BACKGROUND: CRT has been proven to achieve most benefit in patients with left bundle branch block morphology (LBBB). However, ECG criteria to define LBBB significantly differ from each other. Objective of the study was to evaluate the impact of different ECG criteria for LBBB definition on survival, hospitalization for heart failure and reverse remodelling in patients who received cardiac resynchronization therapy (CRT). METHODS AND RESULTS: Three-hundred-sixteen consecutive patients were included in the analysis...
July 16, 2018: International Journal of Cardiology
Göksel Çinier, Ahmet İlker Tekkeşin, Duygu Genç, Ufuk Yıldız, Emrecan Parsova, Levent Pay, Bryce Alexander, Emrah Bozbeyoğlu, Ceyhan Türkkan, Ahmet Taha Alper, Adrian Baranchuk
INTRODUCTION: Interatrial block (IAB) is strongly associated with recurrence of atrial fibrillation (AF) in different clinical scenarios. Atrial fibrosis is considered the responsible mechanism underlying the pathogenesis of IAB. The aim of this study was to investigate whether IAB predicted AF at 12 months follow up in a population of patients with ST segment elevation myocardial infarction (STEMI). METHODS: Prospective, single center, observational study of patients presenting with ST-segment elevation myocardial infarction (STEMI) and referred to primary percutaneous coronary intervention (P-PCI)...
July 18, 2018: Clinical Cardiology
Jennifer L White, Anna Marie Chang, Judd E Hollander, Erica Su, Robert E Weiss, Annick N Yagapen, Susan E Malveau, David H Adler, Aveh Bastani, Christopher W Baugh, Jeffrey M Caterino, Carol L Clark, Deborah B Diercks, Bret A Nicks, Daniel K Nishijima, Manish N Shah, Kirk A Stiffler, Alan B Storrow, Scott T Wilber, Benjamin C Sun
BACKGROUND: Syncope is a common chief complaint in the ED, and the electrocardiogram (ECG) is a routine diagnostic tool in the evaluation of syncope. We assessed whether increasingly prolonged QTc intervals are associated with composite 30-day serious outcomes in older adults presenting to the ED with syncope. METHODS: This is a secondary analysis of a prospective, observational study at 11 EDs in adults 60 years or older who presented with syncope or near syncope...
July 11, 2018: American Journal of Emergency Medicine
Guo-Liang Li, Ardan M Saguner, Guy H Fontaine, Robert Frank
BACKGROUND: Bradycardia-induced torsade de pointes (TdP) tachycardia in patients with spontaneous high-degree atrioventricular block (AVB) is common. The aim of this study was to analyze endocardial recordings during TdP in spontaneous high-degree AVB in humans to better understand the electrophysiological mechanisms underlying this phenomenon. METHODS: The study group consisted of 5 patients with typical episodes of TdP during spontaneous high-degree AVB. A standard (USCI) temporary bipolar endocardial catheter positioned at the apex of the right ventricle (RV) and bipolar chest leads from two precordial leads V1 and V4 were used to record the tracings during TdP...
July 16, 2018: Cardiology Journal
Imane El Hajjaji, Giuliano Becker, Teresa Kus, Alain Vinet, Artur Berkovitz, Marcio Sturmer
BACKGROUND: Many diagnostic criteria for the differential diagnosis of wide complex tachycardia (WCT) are complex and not completely accurate. Incorrect diagnosis is also related to error in applying criteria. OBJECTIVES: To propose a novel reliable criterion for wide QRS complexes' differential diagnosis. MATERIAL AND METHODS: One hundred Electrocardiograms (ECGs) with wide QRS complexes were analyzed using the ECG software. Five variables were measured during the first 20 ms of QRS in leads V1 and V2 and compared between premature ventricular contraction (PVC) and conducted supraventricular impulse with bundle branch block (BBB) groups...
July 2018: Journal of Electrocardiology
Shih-Jie Jhuo, Tsyh-Jyi Hsieh, Wei-Hua Tang, Wei-Chung Tsai, Kun-Tai Lee, Hsueh-Wei Yen, Wen-Ter Lai
BACKGROUND: The relationship of epicardial fat and cardiac arrhythmias has been described in many studies. The association of the amounts of epicardial fat and the characteristics of electrocardiogram (ECG) remains unclear. The purpose of this study was to elucidate the association between the amounts of epicardial fat and the characteristics of ECG. METHODS: A total of 100 consecutive patients who received multi-detector computer tomography (MDCT) were enrolled...
July 2018: Journal of Electrocardiology
Sandeep Pirbhulal, Heye Zhang, Wanqing Wu, Subhas Chandra Mukhopadhyay, Yuan-Ting Zhang
Heartbeats based Random binary sequences (RBSs) are the backbone for several security aspects in wireless body sensor networks (WBSNs). However, current heartbeats based methods require a lot of processing time (~ 25-30 seconds) to generate 128-bit RBSs in real-time healthcare applications. In order to improve time efficiency, a biometric RBSs generation technique using inter-pulse intervals (IPIs) of heartbeats is developed in this study. The proposed technique incorporates finite monotonic increasing sequences generation mechanism of IPIs and cyclic block encoding procedure that extracts a high number of entropic bits from each IPI...
March 12, 2018: IEEE Transactions on Bio-medical Engineering
M J A Walker, E S Hayes, D A Saint, G Adaikan, S Abraham, A L Goldin, G N Beatch, B A MacLeod, R A Wall, M K Pugsley
BACKGROUND: RSD921, the R,R enantiomer of the kappa (k) agonist PD117,302, lacks significant activity on opioid receptors. METHODS: The pharmacological and toxicological actions were studied with reference to cardiovascular, cardiac, antiarrhythmic, toxic and local anaesthetic activity. RESULTS: In rats, dogs and baboons, RSD921 dose-dependently reduced blood pressure and heart rate. In a manner consistent with sodium channel blockade it prolonged the PR and QRS intervals of the ECG...
July 2, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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