Narrow QRS complex tachycardia with a 2:1 atrioventricular block: What is the mechanism

2021 ◽  
Author(s):  
Yuichiro Miyazaki ◽  
Takashi Noda ◽  
Koji Miyamoto ◽  
Satoshi Nagase ◽  
Takeshi Aiba ◽  
...  
Keyword(s):  
Atrioventricular Block ◽  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex

scholarly journals Alternating and gradually changing narrow QRS complex tachycardia in a patient with heart failure: What is the mechanism?

2021 ◽  
Author(s):  
Songwen Chen ◽  
Feilong Zhang ◽  
Yong Wei ◽  
Xiaofeng Lu ◽  
Genqing Zhou ◽  
...  
Keyword(s):  
Heart Failure ◽  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex

scholarly journals Left ventricular diastolic and systolic dyssynchrony and dysfunction in heart failure with preserved ejection fraction and a narrow QRS complex

2018 ◽  
Vol 15 (2) ◽  
pp. 108-114 ◽  
Author(s):  
Shuang Liu ◽  
Zhengyu Guan ◽  
Xuanyi Jin ◽  
Pingping Meng ◽  
Yonghuai Wang ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ejection Fraction ◽  
Left Ventricular ◽  
Preserved Ejection Fraction ◽  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex

scholarly journals Tachycardia cycle length alternans during a narrow QRS complex tachycardia with eccentric retrograde atrial activation sequence: What is the mechanism?

2020 ◽  
Vol 36 (1) ◽  
pp. 209-210
Author(s):  
Meryem Kara ◽  
Ahmet Korkmaz ◽  
Emin Karimli ◽  
Evrim Simsek ◽  
Ozcan Ozeke ◽  
...  
Keyword(s):  
Cycle Length ◽  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex ◽  
Atrial Activation ◽  
Activation Sequence

scholarly journals Efficacy of Cardiac Resynchronization Therapy in Patients with a Narrow QRS Complex

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Toshiko Nakai ◽  
Yukitoshi Ikeya ◽  
Hiroaki Mano ◽  
Rikitake Kogawa ◽  
Ryuta Watanabe ◽  
...  
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Response Rate ◽  
Nyha Class ◽  
Heart Association ◽  
Cardiac Resynchronization ◽  
Qrs Complex ◽  
Resynchronization Therapy ◽  
Narrow Qrs ◽  
Narrow Qrs Complex ◽  
Crt Response

Aims. In the guidelines for cardiac resynchronization therapy (CRT), there is a gap between the Japanese Circulation Society (JCS) criteria, which specify a QRS duration of ≥120 ms, and other countries, with a QRS ≥ 130 ms. The efficacy of CRT remains controversial in patients with a narrow QRS <130 ms. The aims of this study are to evaluate the response to CRT in patients with a narrow QRS and to identify predictors of mortality. Methods. We retrospectively studied 212 patients who received CRT. They were divided into narrow QRS (<130 ms) and wide QRS (≥130 ms) groups. We compared CRT response rates and investigated whether age, gender, baseline New York Heart Association (NYHA) class, ischemic etiology, atrial fibrillation, and ventricular arrhythmias are associated with response and also predictive of mortality. Results. The CRT response rate was not significantly different between the wide QRS group and the narrow QRS group (74.6% versus 77.2%, p  = 0.6876), and the response rate in the narrow QRS group was as good as that reported worldwide. NYHA class IV was shown to be a predictor of mortality (HR 9.38, 95% CI 5.35–16.3, p  < 0.0001). Conclusions. The present study demonstrated that patients with a narrow QRS complex responded well to CRT. Even with QRS <130 ms, CRT should be tried if no other effective treatment is available.

scholarly journals The effect of QRS duration on cardiac resynchronization therapy in patients with a narrow QRS complex: a subgroup analysis of the EchoCRT trial

2015 ◽  
Vol 36 (30) ◽  
pp. 1983-1989 ◽  
Author(s):  
Jan Steffel ◽  
Michele Robertson ◽  
Jagmeet P. Singh ◽  
William T. Abraham ◽  
Jeroen J. Bax ◽  
...  
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Subgroup Analysis ◽  
Cardiac Resynchronization ◽  
Qrs Complex ◽  
Resynchronization Therapy ◽  
Narrow Qrs ◽  
Narrow Qrs Complex ◽  
Qrs Duration

Narrow QRS complex in idiopathic (fascicular) left ventricular tachycardia

Herz ◽  
2013 ◽  
Vol 40 (1) ◽  
pp. 147-149 ◽  
Author(s):  
S. Paraskevaidis ◽  
E.K. Theofilogiannakos ◽  
D.M. Konstantinou ◽  
L. Mantziari ◽  
C. Kefalidis ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricular ◽  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex

Narrow QRS Complex Tachycardia

2012 ◽  
pp. 29-36
Author(s):  
Courtney B. Saunders ◽  
Jeffrey D. Ferguson
Keyword(s):  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex

scholarly journals Irregular narrow QRS complex tachycardia with intermittent atrioventricular dissociation: What is the mechanism?

2020 ◽  
Vol 31 (8) ◽  
pp. 2234-2237
Author(s):  
Atsushi Doi ◽  
Naoko Miyazaki ◽  
Tomohiko Goda ◽  
Haruya Yamane ◽  
Kei Tanaka ◽  
...  
Keyword(s):  
Qrs Complex ◽  
Narrow Qrs ◽  
Atrioventricular Dissociation ◽  
Narrow Qrs Complex

scholarly journals Narrow QRS-complex tachycardia: Part 2

2014 ◽  
Vol 55 (09) ◽  
pp. 451-455
Author(s):  
D Singh ◽  
SG Teo ◽  
AR Omar ◽  
KK Poh
Keyword(s):  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex
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