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("ECG" OR " EKG") AND ("Supraventricular Tachycardia" OR "SVT")

Eric N Prystowsky
Twenty-five years ago, a 15-year-old girl was referred for electrophysiology study (EPS) and potential ablation of a documented paroxysmal supraventricular tachycardia. All her electrocardiograms (ECG) and ECG monitor stirps showed a normal PR interval, and occasional incomplete right bundle branch block. This article is protected by copyright. All rights reserved.
December 21, 2018: Journal of Cardiovascular Electrophysiology
James O Neill, Muzahir Hassan Tayebjee
Objective: The South Asian population has a lower burden of arrhythmia compared with Caucasians despite a higher prevalence of traditional cardiovascular risk factors. We aimed to determine whether this was due to differences in the electrophysiological properties of the South Asian heart. Methods: We performed a retrospective cohort study of South Asian and Caucasian patients who underwent an electrophysiology study for supraventricular tachycardia between 2005 and 2017...
2018: Heart Asia
Abdullah Orhan Demirtaş, Yahya Kemal Icen, Onur Kaypaklı, Hasan Koca, İlker Ünal, Zikret Köseoğlu, Durmus Yıldıray Sahin, Mevlut Koc
AIM: A combined aVR criterion is described as the presence of a pseudo r' wave in aVR during tachycardia in patients without r' wave in aVR in sinus rhythm and/or a ≥50% increase in r' wave amplitude compared to sinus rhythm in patients with r' wave in the basal aVR lead. We aimed to investigate the use of combined aVR criterion in differential diagnosis of atrioventricular nodal reentrant tachycardia (AVNRT) and atrioventricular reciprocating tachycardia (AVRT). METHODS: In this prospective study, 480 patients with inducible narrow QRS supraventricular tachycardia (SVT) were included...
November 2018: Journal of Electrocardiology
Douglas Robinson, Gregory Hand, Jason Ausman, Anthony Hackett
BACKGROUND: Brugada pattern is a well-known pathological finding on electrocardiogram (ECG) which increases the likelihood of cardiac arrest due to ventricular arrhythmia. These cases generally present in younger patients without evidence of an electrolyte abnormality, structural heart disease, or cardiac ischemia. In many instances, this pattern is either hidden on initial presentation or presents as an incidental finding on an EKG. Often times the Brugada syndrome leads to sudden cardiac death or more rarely can be unmasked with a class 1A or 1C anti-arrhythmic agent...
February 2019: American Journal of Emergency Medicine
Ashutosh Chaturvedi, Arun Kumar
Background: Syncope is a common clinical presentation in emergency department. The diagnostic workup for syncope causes significant man-hour loss and expensive investigations. Most often the battery of investigations does not lead to any conclusive diagnosis. Materials and Methods: This was a descriptive study in which included 50 consecutive patients with the diagnosis of syncope. These patients were admitted to a tertiary care hospital between Sep 2009 to Aug 2011...
January 2018: Journal of the Association of Physicians of India
Amanda Quattrocelli, Janet Lang, Andrew Davis, Andreas Pflaumer
Background: Supraventricular tachycardia is a group of rhythm disturbances that affect 1 in 300-1200 Australian children annually. The differentiation of supraventricular tachycardia (SVT) symptoms and age of onset according to their subtype is not well understood in the pediatric population. Most studies rely on ECG criteria only to characterize the subtype of the SVT, which is not applicable to all subtypes. The purpose of this study was to identify the symptoms and ages of onset of SVT subtypes, and to analyze whether ethnicity or severity correlated with the SVT subtype confirmed in an invasive Electrophysiology (EP) study...
October 2018: Journal of Arrhythmia
Amy Brisben
Transvenous Implantable Cardioverter Defibrillator (TV-ICD) and subcutaneous ICD (S-ICD) devices are available for patients at risk of sudden cardiac death (SCD). Both devices sense ventricular arrhythmias with near 100% sensitivity (Gold et al., 2012) and have similar rates of inappropriate shocks (IAS) (2.5-4.8%). IAS due to supraventricular tachycardias (SVT) is higher for TV-ICDs and IAS due to cardiac over-sensing is higher for S-ICDs (Basu-Ray et al., 2017). The S-ICD's sensing signal is morphologically rich, resembling the surface electrocardiogram (ECG) signal...
November 2018: Journal of Electrocardiology
Sabina Aursulesei, Gelu Simu, Cristian Florea, Paul Boarescu, Cristina Gheorghiu, Florina Frangu, Gabriel Cismaru, Mihai Puiu, Radu Rosu, Dumitru Zdrenghea, Dana Pop
We present the case of a 14-year-old female patient with recurrent episodes of paroxysmal supraventricular tachycardia (PSVT). Her ECG showed a PR interval of 160 ms in lead II, and a delta wave pattern in leads V2 and V3, with a normal QRS interval of 100 ms. We analyzed the three criteria for confirmation of minimal pre-excitation: (i) absence of a Q wave in V6; (ii) presence of an R wave in V1 and (iii) absence of an R wave in avR. The 3 criteria were not met and failed to establish a diagnosis of ventricular pre-excitation...
October 2018: Oxford Medical Case Reports
Ali Elitok, Gökhan Aksan, Mehmet Rasih Sonsöz, Mehmet Tezcan, Özgür Çevrim
Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common type of reentrant paroxysmal supraventricular tachycardia that occurs in the presence of dual AV nodal physiology. Wolff-Parkinson-White (WPW) syndrome is another type of supraventricular tachycardia characterized by short PR intervals, delta waves and wide QRS complexes on the surface electrocardiogram (ECG), reflecting atrioventricular pre-excitation. Uncommonly, AV nodal reentry and accessory pathways can coexist. In this case report, we present a patient who had frequent episodes of palpitation and syncope and recently presented to the emergency department (ED) with the complaint of dizziness...
September 2018: Turkish Journal of Emergency Medicine
Rajin Choudhury, Hugo-Enrique Coutino, Radu Darciuc, Erwin Ströker, Valentina De Regibus, Giacomo Mugnai, Gaetano Paparella, Muryio Terasawa, Varnavas Varnavas, Francesca Salghetti, Saverio Iacopino, Ken Takarada, Juan-Pablo Abugattas, Juan Sieira, Pedro Brugada, Carlo de Asmundis, Gian-Battista Chierchia
BACKGROUND: The second-generation cryoballoon (CB) is effective in achieving pulmonary vein isolation. Continuous monitoring would eliminate any over- or underestimated freedom from atrial fibrillation (AF) postablation. OBJECTIVE: The purpose of this study was to differentiate between arrhythmias occurring after cryoballoon ablation (CBA), detecting true AF in symptomatic patients and detecting silent subclinical AF. METHODS: Between June 2012 and January 2015, 54 patients with a preexisting cardiac implantable electronic device (CIED) who had undergone CBA for paroxysmal atrial fibrillation (PAF) were included in our retrospective study...
August 18, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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
Carine I van Capelle, Esther Poelman, Ingrid M Frohn-Mulder, Laurens P Koopman, Johanna M P van den Hout, Luc Régal, Bjorn Cools, Wim A Helbing, Ans T van der Ploeg
BACKGROUND: Cardiac failure is the main cause of death in untreated classic infantile Pompe disease, an inheritable metabolic myopathy characterized by progressive hypertrophic cardiomyopathy. Since the introduction of enzyme replacement therapy (ERT), survival has increased significantly due to reduced cardiac hypertrophy and improved cardiac function. However, little is known about ERT's long-term effects on the heart. METHODS: Fourteen patients were included in this prospective study...
October 15, 2018: International Journal of Cardiology
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
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
Alan S Go, Mark A Hlatky, Taylor I Liu, Dongjie Fan, Elisha A Garcia, Sue Hee Sung, Matthew D Solomon
BACKGROUND: Contemporary data about symptomatic paroxysmal supraventricular tachycardia (PSVT) epidemiology are limited. We characterized prevalence and correlates of symptomatic PSVT within a large healthcare delivery system and estimated national PSVT burden. METHODS AND RESULTS: We identified adults with an encounter for potential PSVT between 2010 and 2015 in Kaiser Permanente Northern California, excluding those with prior known atrial fibrillation or atrial flutter...
July 7, 2018: Journal of the American Heart Association
Jessica J Voerman, Mary E Hoffe, Sam Surka, Paulo M Alves
BACKGROUND: Supraventricular tachycardia (SVT) is a common presenting arrhythmia in the general population. Cases of SVT presenting during commercial air travel are always challenging as they might be confused with other conditions requiring different treatment strategies. We present a case of an in-flight SVT that was successfully managed using telemedicine support. CASE REPORT: A 33-yr-old woman developed chest pain and dizziness while on an international commercial flight...
July 1, 2018: Aerospace Medicine and Human Performance
Muhammad U Butt, Ripa Patel, Yousef H Darrat, Gustavo X Morales, Claude S Elayi
BACKGROUND Wolff-Parkinson-White (WPW) pattern is due to a pre-excitation leading to characteristic ECG changes in sinus rhythm as short PR interval, the presence of delta waves, wide QRS complexes, and potentially Q wave-T wave vector discordance (pseudo-infarct pattern). These later changes can mask the underlying ECG depolarizing solely through the His-Purkinje system. Our case highlights how the ECG of a WPW pattern with a pseudo-infarct pattern can in fact mask a true infarct on the underlying ECG without pre-excitation...
June 13, 2018: American Journal of Case Reports
Anil V Yadav, Babak Nazer, Barbara J Drew, John M Miller, Hicham El Masry, William J Groh, Andrea Natale, Nassir Marrouche, Nitish Badhwar, Yanfei Yang, Melvin M Scheinman
OBJECTIVES: This study sought to determine the ability of conventional electrocardiographic (ECG) criteria to correctly differentiate idiopathic ventricular tachycardia (VT) from supraventricular tachycardia (SVT) with aberrancy. BACKGROUND: Previously reported VT ECG criteria were developed from cohorts of patients with structural heart disease and have not been applied to patients with idiopathic VT. METHODS: ECGs of 115 idiopathic VTs, 101 post-myocardial infarction (MI) VTs, and 111 wide QRS SVTs were analyzed using standard criteria...
July 2017: JACC. Clinical Electrophysiology
F Niknejad Mazandarani, M Mohebbi
BACKGROUND AND OBJECTIVE: Automatic processing and accurate diagnosis of wide complex tachycardia (WCT) arrhythmia groups using electrocardiogram signals (ECG) remains a challenge. WCT arrhythmia consists of two main groups: ventricular tachycardia (VT) and supraventricular tachycardia with aberrancy (SVT-A). These two groups have similar morphologies in the realm of ECG signals. VT and SVT-A arrhythmias originate from the ventricle and atrium, respectively. Hence, inaccurate diagnosis of SVT-A instead of VT can be fatal...
October 2018: Computer Methods and Programs in Biomedicine
G McAulay, K Borgeat, J Sargent, P Mõtsküla, J Neves, J Dukes-McEwan, V Luis Fuentes
The aim of this study was to describe the clinical phenotype of Dogue de Bordeaux (DdB) referred for cardiac investigation, with particular reference to the prevalence of atrial fibrillation and associated features. Review of canine medical records of two United Kingdom veterinary referral hospitals identified 64 DdB with available echocardiographic and electrocardiographic (ECG)/Holter data. Atrial fibrillation was documented in 25 (39%) dogs and supraventricular tachycardia was recorded in five (7.8%) dogs...
April 2018: Veterinary Journal
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