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Narrow Complex Tachycardia

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https://read.qxmd.com/read/30740722/spontaneously-alternating-narrow-wide-narrow-qrs-complex-tachycardias-what-is-the-mechanism
#1
Hongwu Chen, Gang Yang, Dinesh Sharma, Minglong Chen
No abstract text is available yet for this article.
February 10, 2019: Pacing and Clinical Electrophysiology: PACE
https://read.qxmd.com/read/30732151/atrioventricular-reentrant-tachycardia-in-a-child-with-tricuspid-atresia-a-case-report-of-catheter-ablation
#2
Yefeng Wang, Qiming Liu, Xicheng Deng, Yunbin Xiao, Zhi Chen
RATIONALE: Atrioventricular reentrant tachycardia (AVRT) is the most common supraventricular tachycardia occurring in children. However, in complex congenital heart disease patients with a different heart anatomy and conduction system morphology, accessory pathway modification may be particularly challenging because of distortion of typical anatomic landmarks. PATIENT CONCERNS: A 10-year-old boy with tricuspid atresia and history of bidirectional Glenn operation had recurrent chest distress and palpitation for 3 months...
February 2019: Medicine (Baltimore)
https://read.qxmd.com/read/30654979/wide-and-narrow-qrs-complex-tachycardia-with-four-different-cycle-lengths-what-is-the-mechanism
#3
Ivan Zeljkovic, Sven Knecht, Christian Sticherling, Michael Kühne
No abstract text is available yet for this article.
November 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://read.qxmd.com/read/30552570/an-irregular-narrow-complex-tachycardia-atrial-fibrillation-or-something-else
#4
M J Mulder, C P Allaart, H A Hauer, M J B Kemme
No abstract text is available yet for this article.
December 14, 2018: Netherlands Heart Journal
https://read.qxmd.com/read/30552569/an-irregular-narrow-complex-tachycardia-atrial-fibrillation-or-something-else
#5
M J Mulder, C P Allaart, H A Hauer, M J B Kemme
No abstract text is available yet for this article.
December 14, 2018: Netherlands Heart Journal
https://read.qxmd.com/read/30502773/termination-of-a-narrow-complex-tachycardia-by-a-single-extrastimulus-what-is-the-mechanism
#6
Jonathan P Logue, Arnold J Greenspon, Reginald T Ho
No abstract text is available yet for this article.
December 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://read.qxmd.com/read/30497728/a-new-criterion-to-differentiate-atrioventricular-nodal-reentrant-tachycardia-from-atrioventricular-reciprocating-tachycardia-combined-avr-criterion
#7
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
https://read.qxmd.com/read/30448204/atrioventricular-nodal-reentrant-tachycardia-and-cannon-a-waves
#8
Benjamin L Cooper, Jonas A Beyene
Regular, narrow complex tachycardia with a ventricular rate around 150 can be challenging. The differential includes sinus tachycardia, atrioventricular nodal reentrant tachycardia (AVNRT), atrioventricular reentrant tachycardia (AVRT), and atrial tachycardia (focal or macro re-entrant - i.e. flutter). We present a case of a 90-year-old woman presenting with shortness of breath in which the ECG was not diagnostic, but the presence of regular neck pulsations helped secure the diagnosis of AVNRT. In AVNRT, atria and ventricular contractions occur nearly simultaneously...
February 2019: American Journal of Emergency Medicine
https://read.qxmd.com/read/30346072/an-alternative-to-qrs-alternans
#9
John L Fitzgerald, Austin N May, Bradley Wilsmore, Malcolm Barlow, James Leitch, Nicholas Jackson
No abstract text is available yet for this article.
October 22, 2018: Journal of Cardiovascular Electrophysiology
https://read.qxmd.com/read/30283806/atrial-fibrillation-in-a-patient-with-an-accessory-pathway
#10
Andrew Silverman, Sonia Taneja, Liliya Benchetrit, Peter Makusha, Robert L McNamara, Alexander B Pine
A 24-year-old man with history of unspecified arrhythmia presented with palpitations and chest pain. Initial electrocardiogram (ECG) revealed irregular tachycardia with varying QRS width: 150 to 200 beats per minute for narrow complexes and 300 beats per minute for wide complexes. Following cardioversion, ECG revealed sinus tachycardia with a preexcitation pattern of positive delta waves in the anterolateral leads and negative delta waves in inferior leads. The patient remained in sinus rhythm and underwent successful ablation of a right posteroseptal accessory pathway...
January 2018: Journal of Investigative Medicine High Impact Case Reports
https://read.qxmd.com/read/30228968/paroxysmal-1-1-narrow-complex-tachycardia-what-is-the-mechanism
#11
Jason V Garcia, Holly L Daw, Jonathan M Behar, Pier D Lambiase
No abstract text is available yet for this article.
September 2018: HeartRhythm Case Reports
https://read.qxmd.com/read/30094471/electrocardiographic-criteria-of-epicardial-ventricular-tachycardia-with-anterior-origin
#12
Christopher Reithmann, Michael Fiek, Zeinab Aynur, Michael Ulbrich
BACKGROUND: ECG criteria for identifying an epicardial origin of ventricular tachycardia (VT) have mainly been described for VTs with basal-superior and lateral origin. OBJECTIVE: The aim of this study was to determine ECG criteria for epicardial VTs with anterior origin as a guide for trans-pericardial ablation. RESULTS: Among 22 patients undergoing successful ablation of VTs from the anterior myocardial wall, 14 patients underwent endocardial ablation and 8 patients underwent epicardial ablation...
August 9, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://read.qxmd.com/read/30067274/irregular-narrow-complex-tachycardia
#13
Julian Hoevelmann, Charle Viljoen, Ashley Chin
The correct differentiation of an irregular, narrow-complex tachycardia has crucial implications for the therapeutic management of these conditions. In this article we present a differential diagnostic and treatment approach to irregular, narrow-complex tachycardias.
May 2018: Cardiovascular Journal of Africa
https://read.qxmd.com/read/30032471/the-low-specificity-of-low-voltage-bridges-associating-atrioventricular-nodal-reentry-in-pediatric-patients
#14
Amanda M Marshall, Christopher C Erickson, David A Danford, John D Kugler, Vincent C Thomas
PURPOSE: Patients with atrioventricular nodal reentry tachycardia (AVNRT) often are managed successfully by ablation of the slow pathway with success rates reported as high as 99%. Low voltage bridges (LVBs) have been demonstrated to be helpful in guiding AVNRT ablation. Patients may present to the electrophysiology lab without evidence of inducible arrhythmia. In these scenarios, the demonstration of LVBs may be diagnostic and guide catheter ablation treatment. The purpose of our study was to prospectively investigate the specificity of LVBs as a diagnostic marker of AVNRT...
July 21, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://read.qxmd.com/read/29992617/narrow-qrs-tachycardia-with-apparent-concentric-atrial-activation-pattern-what-is-the-mechanism
#15
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Hiren Kevadiya, Ajitkumar Valaparambil
No abstract text is available yet for this article.
September 2018: Pacing and Clinical Electrophysiology: PACE
https://read.qxmd.com/read/29951142/effect-of-heart-rate-and-pacing-mode-on-qrs-fragmentation
#16
Fani Zagkli, Stefanos Despotopoulos, Christos Spiliotopoulos, John Chiladakis
Background: The study was designed to investigate the effect of heart rate and pacing mode on QRS fragmentation (f-QRS). Moreover, the usefulness of f-QRS in distinguishing patients with impaired left ventricular ejection function (EF) and ventricular tachycardia (VT) from patients with normal EF was assessed. Methods: Three hundred and six recipients, with dual-chamber device, with intrinsic narrow or wide QRS complex and preserved atrioventricular conduction were grouped into normal-EF or impaired-EF VT...
June 2018: Journal of Arrhythmia
https://read.qxmd.com/read/29913014/irregular-narrow-complex-tachycardia-in-the-setting-of-congenital-heart-disease
#17
Adam Oesterle, Zian H Tseng
No abstract text is available yet for this article.
August 1, 2018: JAMA Internal Medicine
https://read.qxmd.com/read/29895817/when-a-pseudo-infarct-electrocardiogram-ecg-pattern-in-a-posterior-accessory-wolff-parkinson-white-pathway-masks-a-true-inferior-infarct
#18
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
https://read.qxmd.com/read/29881559/pacemaker-mediated-tachycardia-with-narrow-qrs-complexes
#19
Hyun Sok Yoo, Ernesto Albino, Pablo Fernandez, Daniel Etcheverry, Rita Tepper, Hugo Garro, Julio Pastori, Rafael Acunzo
Inverted connection of the atrial and ventricular leads is an unusual circumstance during the implantation of a dual-chamber pacemaker. Yet, PMT may present in the absence of complex mechanisms. The detection and termination algorithms used by the device proved to be efficient for the adequate diagnosis and treatment.
June 2018: Clinical Case Reports
https://read.qxmd.com/read/29779522/sinus-tachycardia-presenting-as-a-wide-and-narrow-complex-tachyarrhythmia-what-is-the-link
#20
Chenni S Sriram, Mario D Gonzalez
We describe a neonate that developed alternating wide and narrow complex tachycardias following heart surgery for congenital heart defect. Although the etiology was sinus tachycardia, a premature atrial complex initiated aberrancy due to phase 3 block that was perpetuated due to 'linking' at similar or even slower heart rates. Similarly, there was abrupt transition from wide to narrow complex tachycardia following a premature ventricular complex without a change in subsequent heart rate. This was explained by interruption of linking phenomenon by premature ventricular activation...
May 2018: Journal of Electrocardiology
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