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Narrow QRS complex tachycardia

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https://www.readbyqxmd.com/read/27909509/junctional-beats-during-cryo-ablation-of-the-slow-pathway-for-the-elimination-of-atrioventricular-nodal-reentrant-tachycardia
#1
Murat Sucu, Vedat Davutoglu, Esra Polat
The patient was a 39-year-old female with recurrent paroxysmal, regular narrow QRS complex tachycardia. Atrioventricular nodal reentrant tachycardia (AVNRT) was induced. The cryo-ablation attempts (-80°C, 240 second) were performed in the inferior-posterior triangle of Koch. We observed several junctional beats during cryo-ablation. After successful cryo-ablation, AVNRT induction was repeatedly checked during a waiting period of 30 minutes without recurrence. In our case we demonstrated that junctional beats can be observed during cryo-ablation...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909485/supraventricular-tachycardia-with-irregular-ventricular-atrial-intervals-and-ventriculo-atrial-block
#2
Prof Dr Murat Sucu, Prof Dr Vedat Davutoglu, Dr Esra Polat
The patient was a 68-year-old female with recurrent paroxysmal, regular narrow QRS complex tachycardia. We observed complete VA conduction block, during tachycardia in our patient. A characteristic feature of our patient is the noticeable irregular atrial and ventricular rates. We considered that possible mechanism of this tachycardia was atrioventricular nodal reentrant tachycardia (AVNRT) with retrograde complete type block in the upper common pathway.
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27751374/diagnostic-accuracy-of-several-electrocardiographic-criteria-for-the-prediction-of-atrioventricular-nodal-reentrant-tachycardia
#3
Juliana Filgueiras Medeiros, Fábio Martins Nardo-Botelho, Lara Cristina Felix-Bernardes, Lucas Hollanda-Oliveira, Lucas Bassolli de Oliveira-Alves, Ênia Lúcia-Coutinho, Cristiano Dietrich, Adriano Caixeta, Jose Marconi Almeida-de-Sousa, Ântonio Carlos-Carvalho, Cláudio Cirenza, Ângelo Amato Vicenzo-de-Paola
BACKGROUND AND AIMS: Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common form of paroxysmal supraventricular tachycardia (SVT) whose diagnosis can be strongly suspected based on the surface eletrocardiogram alone. The purpose of this study is to determine the diagnostic accuracy of several electrocardiographic (ECG) criteria for the prediction of AVNRT. METHODS: Between November 2010 and January 2014, a total of 256 patients who underwent electrophysiological testing (EP) with regular, paroxysmal and narrow QRS complex tachycardia were prospectively enrolled...
July 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/27748530/sudden-death-and-its-risk-factors-after-atrioventricular-junction-ablation-and-pacemaker-implantation-in-patients-with-atrial-fibrillation
#4
Ru-Xing Wang, Hon-Chi Lee, Jia-Ping Li, David O Hodge, Yong-Mei Cha, Paul A Friedman, Thomas M Munger, Komandoor Srivathsan, Behzad B Pavri, Win-Kuang Shen
BACKGROUND: Although sudden death (SD) is a rare complication after atrioventricular junction (AVJ) ablation and permanent pacemaker implantation, the risk factors leading to this SD remain unknown. The purpose of this study was to investigate SD and its risk factors after ablate-and-pace strategy for rate control in atrial fibrillation (AF) patients during long-term follow-up. HYPOTHESIS: METHODS: From January 2005 to December 2009, we enrolled into this study 517 AF patients with AVJ ablation and right ventricular pacemaker implantation...
October 17, 2016: Clinical Cardiology
https://www.readbyqxmd.com/read/27729344/non-reentrant-fascicular-tachycardia-clinical-and-electrophysiological-characteristics-of-a-distinct-type-of-idiopathic-ventricular-tachycardia
#5
Ahmed Karim Talib, Akihiko Nogami, Itsuro Morishima, Yasushi Oginosawa, Kenji Kurosaki, Shinya Kowase, Yuki Komatsu, Kenji Kuroki, Miyako Igarashi, Yukio Sekiguchi, Kazutaka Aonuma
BACKGROUND: The most common form of idiopathic Purkinje-related ventricular tachycardia (VT) is the reentrant type. We describe the clinical and electrophysiological characteristics of focal non-reentrant fascicular tachycardia. METHODS AND RESULTS: Among 530 idiopathic VT patients who were referred for ablation, we identified 15 (2.8%) with non-reentrant fascicular tachycardia (11 men, 45±21 years). Sinus rhythm ECG showed normal conduction intervals with a His-ventricular interval of 41±4 ms...
October 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27659255/-wide-narrow-wide-qrs-complex-tachycardia-what-is-the-mechanism
#6
Vincenzo Carbone, Alessio Poggi, Vincenzo Marafioti, Giuseppe Oreto
No abstract text is available yet for this article.
October 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27484659/paroxysmal-supraventricular-tachycardia-pathophysiology-diagnosis-and-management
#7
REVIEW
Salah S Al-Zaiti, Kathy S Magdic
Paroxysmal supraventricular tachycardia (PSVT) is a well-known and thoroughly studied clinical syndrome, characterized by regular tachycardia rhythm with sudden onset and abrupt termination. Most patients present with palpitations and dizziness, and their electrocardiogram demonstrates a narrow QRS complex and regular tachycardia with hidden or inverted P waves. PSVT is caused by re-entry due to the presence of inhomogeneous, accessory, or concealed conducting pathways. Hemodynamically stable patients are treated by vagal maneuvers, intravenous adenosine, diltiazem, or verapamil, hemodynamically unstable patients are treated by cardioversion...
September 2016: Critical Care Nursing Clinics of North America
https://www.readbyqxmd.com/read/27366332/accidental-entrapment-of-electrical-mapping-catheter-by-chiari-s-network-in-right-atrium-during-catheter-ablation-procedure
#8
Atsushi Sakamoto, Tsuyoshi Urushida, Tomoaki Sakakibara, Makoto Sano, Kenichiro Suwa, Takeji Saitoh, Masao Saotome, Hideki Katoh, Hiroshi Satoh, Hideharu Hayashi
A 78-year-old male was admitted to our hospital due to frequent palpitation. His electrocardiogram (ECG) presented regular narrow QRS tachycardia with 170 bpm, and catheter ablation was planned. During electroanatomical mapping of the right atrium (RA) with a multiloop mapping catheter, the catheter head was entrapped nearby the ostium of inferior vena cava. Rotation and traction of the catheter failed to detach the catheter head from the RA wall. Exfoliation of connective tissue twined around catheter tip by forceps, which were designed for endomyocardial biopsy, succeeded to retract and remove the catheter...
2016: Case Reports in Cardiology
https://www.readbyqxmd.com/read/27094587/wide-qrs-complex-tachycardia-in-a-patient-with-concealed-accessory-pathway-what-is-the-mechanism
#9
Marek Jastrzebski, Maciej Pitak, Andrzej Rudzinski, Danuta Czarnecka
No abstract text is available yet for this article.
September 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26686363/phase-analysis-of-gated-blood-pool-spect-for-multiple-stress-testing-assessments-of-ventricular-mechanical-dyssynchrony-in-a-tachycardia-induced-dilated-cardiomyopathy-canine-model
#10
Samaneh Salimian, Bernard Thibault, Vincent Finnerty, Jean Grégoire, François Harel
BACKGROUND: Stress-induced dyssynchrony has been shown to be independently correlated with clinical outcomes in patients with dilated cardiomyopathy (DCM) and narrow QRS complexes. However, the extent to which stress levels affect inter- and intraventricular dyssynchrony parameters remains unknown. METHODS: Ten large dogs were submitted to tachycardia-induced DCM by pacing the right ventricular apex for 3-4 weeks to reach a target ejection fraction (EF) of 35% or less...
December 18, 2015: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/26627880/diagnostic-accuracy-of-commercially-available-automated-external-defibrillators
#11
Takahiko Nishiyama, Ako Nishiyama, Masachika Negishi, Shin Kashimura, Yoshinori Katsumata, Takehiro Kimura, Nobuhiro Nishiyama, Yoko Tanimoto, Yoshiyasu Aizawa, Hideo Mitamura, Keiichi Fukuda, Seiji Takatsuki
BACKGROUND: Although automated external defibrillators (AEDs) have contributed to a better survival of out-of-hospital cardiac arrests, there have been reports of their malfunctioning. We investigated the diagnostic accuracy of commercially available AEDs using surface ECGs of ventricular fibrillation (VF), ventricular tachycardia (VT), and supraventricular tachycardia (SVT). METHODS AND RESULTS: ECGs(VF 31, VT 48, SVT 97) were stored during electrophysiological studies and transmitted to 4 AEDs, the LifePak CR Plus (CR Plus), HeartStart FR3 (FR3), and CardioLife AED-2150 (CL2150) and -9231 (CL9231), through the pad electrode cables...
December 2015: Journal of the American Heart Association
https://www.readbyqxmd.com/read/26552613/paroxysmal-supraventricular-tachycardia-with-ventriculoatrial-block-and-qrs-duration-shortening-what-is-the-mechanism
#12
Paul Chun Yih Lim, Daniel Thuan Tee Chong, Boon Yew Tan, Kah Leng Ho, Wee Siong Teo, Chi Keong Ching
No abstract text is available yet for this article.
May 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26309644/to-decide-medical-therapy-according-to-ecg-criteria-in-patients-with-supraventricular-tachycardia-in-emergency-department-adenosine-or-diltiazem
#13
Halil Dogan, Dogac Niyazi Ozucelik, Kurtulus Aciksari, Ilker Murat Caglar, Nursel Okutan, Mustafa Yazicioglu, Baris Murat Avyaci, Cem Simsek, Derya Ozasir, Tufan Akin Giray, Cem Ayan, Feridun Celikmen, Yıldız Okuturlar, Sezgin Sarikaya
UNLABELLED: The aim of this study is to investigate the effect of ECG criteria which are used for the distinction between AVNRT and AVRT for the choice of treatment in patients with Supraventricular Tachycardia (SVT). The 77 patients with narrow QRS complex SVT which was treated with Adenosine or Diltiazem in the Emergency Department were evaluated retrospectively. All 12-lead ECG during tachycardia were blindly reviewed according to ECG criteria (Pseudo-r` in V1, Pseudo-S-wave in the inferior leads, Visible P-wave, aVL notch) by a cardiologist and an emergency physician...
2015: International Journal of Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/26287273/-differential-diagnosis-of-a-narrow-qrs-tachycardia
#14
Thorsten Lewalter
The differential diagnosis of a narrow QRS tachycardia requires on the one hand knowledge about the clinical data of the tachycardia patient but on the other hand a systematic step by step analysis of the electrocardiogram (ECG) is the most successful approach. Apart from the question of regularity or irregularity of the QRS complexes, the presence and detection of P waves is also of importance. The P wave timing in relation to the preceding and the following QRS complexes as well as the numerical relationship of P waves and QRS complexes allow a well-founded suspected diagnosis to be achieved in most cases...
September 2015: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/26269212/a-narrow-qrs-complex-tachycardia-with-variable-av-relationships-what-is-the-mechanism
#15
Mitsunori Maruyama, Shunsuke Uetake, Teppei Yamamoto, Noritake Hata, Yoshihiko Seino, Wataru Shimizu
No abstract text is available yet for this article.
February 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26100346/conversion-from-two-types-of-wide-qrs-complex-tachycardia-to-narrow-qrs-complex-tachycardia-what-are-the-mechanisms
#16
Shunsuke Uetake, Mitsunori Maruyama, Teppei Yamamoto, Noritake Hata, Yoshihiko Seino, Wataru Shimizu
No abstract text is available yet for this article.
January 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/25888570/dual-atrioventricular-nodal-non-re-entrant-tachycardia
#17
REVIEW
Christiane Peiker, Christian Pott, Lars Eckardt, Malte Kelm, Dong-In Shin, Stephan Willems, Christian Meyer
Dual atrioventricular nodal non-re-entrant tachycardia (DAVNNT), also known as 'double fire', has recently received more attention since it was demonstrated to mimic more common arrhythmias such as atrial premature beats, atrial fibrillation, and ventricular tachycardia. This is important, since mistaken differential diagnoses and the resulting therapeutic decisions have severe consequences for affected patients. DAVNNT is characterized by conduction characteristics of the atrioventricular (AV) node that leads to a double antegrade conduction of one sinoatrial nodal activity via the slow and fast AV nodal pathways...
March 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/25828600/differential-diagnosis-of-regular-narrow-qrs-tachycardias
#18
REVIEW
Demosthenes G Katritsis, Mark E Josephson
We present an update on clinical and electrophysiological criteria used for the differential diagnosis of regular supraventricular tachycardias. Although several electrocardiographic clues may assist in the differential diagnosis, this is usually accomplished at electrophysiology study, and most often, the differential diagnosis is between atrioventricular nodal reentrant tachycardia, atrioventricular reentrant tachycardia due to a concealed accessory pathway, and atrial tachycardia. Atrial and ventricular pacing maneuvers during sinus rhythm or tachycardia have been used with various success rates...
July 2015: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/25696655/a-narrow-qrs-complex-tachycardia-sensitive-to-isoptin
#19
A A M Wilde, R H Bakker
No abstract text is available yet for this article.
August 2006: Netherlands Heart Journal
https://www.readbyqxmd.com/read/25628324/adenosine-induced-tachycardia-acceleration-an-unusual-proarrhythmia
#20
Vini Singh, Negar Salehi, Ranjan Kumar Thakur
Adenosine is an effective agent for termination of most re-entrant supraventricular arrhythmias involving the atrioventricular node and often also used as a diagnostic agent for wide QRS tachycardias. Adenosine terminates 90-99% of re-entrant supraventricular tachycardias but it may rarely accelerate tachycardias. Adenosine-induced tachycardia acceleration is a rare phenomenon, as only a handful of cases have been described in the literature. We present a case of a 36-year-old man with a narrow complex, short RP tachycardia at a rate of 165 bpm and an initial blood pressure of 110/78 mm Hg...
2015: BMJ Case Reports
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