Supraventricular (narrow complex) tachycardias

2019 ◽  
pp. 209-220
Author(s):  
Julio Martí-Almor
Keyword(s):  
Antiarrhythmic Drugs ◽  
Accessory Pathway ◽  
Atrioventricular Node ◽  
Term Treatment ◽  
Qrs Complex ◽  
Emergency Situations ◽  
Narrow Qrs ◽  
Long Term Treatment ◽  
Narrow Qrs Complex ◽  
Excitation Pattern

Supraventricular tachycardia (SVT) includes all tachycardia rhythms (more than 100 bpm), of which the mechanism involves the His Bundle or tissues above it. Usually, these tachyarrhythmias present a narrow QRS complex (except in the presence of a bundle branch block or a manifest accessory pathway which conducts anterogradely to cause a ventricular pre-excitation pattern on the electrocardiogram). This chapter only focuses on narrow QRS complex SVT involving the atrial tissue, the atrioventricular node, and accessory pathways. Atrial fibrillation and atrial flutter are excluded because they are specifically covered in other chapters. The role of antiarrhythmic drugs in SVTs is mainly restricted to acute situations because ablative therapy has surrogate pharmacotherapy and ablation is considered the best long-term treatment for most cases. Nevertheless, it is very important to know how to deal with antiarrhythmic drugs in emergency situations.

Supraventricular (narrow complex) tachycardias

2019 ◽  
pp. 209-220
Author(s):  
Julio Martí-Almor
Keyword(s):  
Antiarrhythmic Drugs ◽  
Accessory Pathway ◽  
Atrioventricular Node ◽  
Term Treatment ◽  
Qrs Complex ◽  
Emergency Situations ◽  
Narrow Qrs ◽  
Long Term Treatment ◽  
Narrow Qrs Complex ◽  
Excitation Pattern

Supraventricular tachycardia (SVT) includes all tachycardia rhythms (more than 100 bpm), of which the mechanism involves the His Bundle or tissues above it. Usually, these tachyarrhythmias present a narrow QRS complex (except in the presence of a bundle branch block or a manifest accessory pathway which conducts anterogradely to cause a ventricular pre-excitation pattern on the electrocardiogram). This chapter only focuses on narrow QRS complex SVT involving the atrial tissue, the atrioventricular node, and accessory pathways. Atrial fibrillation and atrial flutter are excluded because they are specifically covered in other chapters. The role of antiarrhythmic drugs in SVTs is mainly restricted to acute situations because ablative therapy has surrogate pharmacotherapy and ablation is considered the best long-term treatment for most cases. Nevertheless, it is very important to know how to deal with antiarrhythmic drugs in emergency situations.

The Value of Transesophageal Atrial Pacing in Predicting the Efficacy of Antiarrhythmic Drugs in Patients with Paroxysmal Narrow QRS Complex Tachycardia

1992 ◽  
Vol 15 (6) ◽  
pp. 895-904 ◽  
Author(s):  
PIOTR KULAKOWSKI ◽  
MIROSLAW DLUZNIEWSKI ◽  
SEAN O'NUNAIN ◽  
A. JOHN CAMM ◽  
MALGORZATA WARDZYNSKA ◽  
...  
Keyword(s):  
Antiarrhythmic Drugs ◽  
Atrial Pacing ◽  
Qrs Complex ◽  
Narrow Qrs ◽  
Narrow Qrs Complex

Narrow QRS Complex Tachycardias

2007 ◽  
Vol 18 (3) ◽  
pp. 264-274
Author(s):  
Carol Jacobson
Keyword(s):  
Rate Control ◽  
Accessory Pathway ◽  
Ventricular Rate ◽  
Channel Blockers ◽  
Qrs Complex ◽  
Av Node ◽  
Narrow Qrs ◽  
Circus Movement ◽  
Narrow Qrs Complex ◽  
Reentry Tachycardia

Narrow QRS complex tachycardias are either atrioventricular (AV) nodal passive or AV nodal active. AV nodal passive tachycardias do not require the participation of the AV node in maintenance of the tachycardia. Examples are atrial tachycardia, atrial flutter, and atrial fibrillation. Treatment is directed at ventricular rate control with calcium channel blockers or β-blockers. AV nodal active tachycardias require active participation of the AV node in maintaining the tachycardia. Examples include AV nodal reentry tachycardia and circus movement tachycardia using an accessory pathway. Treatment with a vagal maneuver or adenosine usually terminates the tachycardia. Recognition of these tachycardias is reviewed.

Reversibility of a High-Grade Atrioventricular Block Treated Homeopathically

2021 ◽  
Vol 34 (01) ◽  
pp. 052-061
Author(s):  
Herman John Daniel Jeggels
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Heart Rate ◽  
Atrioventricular Node ◽  
High Grade ◽  
Qrs Complex ◽  
Junctional Rhythm ◽  
Narrow Qrs ◽  
Narrow Qrs Complex ◽  
Electrocardiogram Ecg

Abstract: Background A 61-year-old female patient requested a homeopathic therapy as an alternative to a pacemaker for a non-acute myocardial infarction, high-grade atrioventricular node block (HG-AVNB) with a narrow QRS complex. Methods Homeopathic Digitalis purpurea (Digitalis) was employed to accelerate the patient's heart rate. Results Digitalis caused within 3 days a pulse rate of about 90 beats per minute (bpm) which is represented on the electrocardiogram (ECG) by an accelerated junctional rhythm (AJR).The AJR compelled seeking a medicine to reduce its rate. Homeopathic Arsenicum album (Arsenicum) reduced its rate and also seemed to have assisted in the unanticipated recovery of the atrioventricular node (AVN). Conclusions This case report represents, an ECG documented case of a medical treatment modality which could be an alternative to pacemakers for patients with a HG-AVNB with a narrow QRS complex. Digitalis has been safe and effective during its 3 and a half year employment.

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 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.

Sign in / Sign up

Export Citation Format

Share Document