scholarly journals Slow pseudo sinus rhythm and atrial tachycardia of right superior venous pulmonary origin

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Thierry Verbeet ◽  
Thomas Nguyen ◽  
Alexandre Almorad ◽  
Maurice Jottrand ◽  
Thierry Wauters ◽  
...  
Keyword(s):  
Heart Rate ◽  
Sinus Rhythm ◽  
Atrial Tachycardia ◽  
P Wave ◽  
Ectopic Activity ◽  
Clear Cut ◽  
Sinus Rate ◽  
Wave Morphology ◽  
The Right ◽  
Atrial Rhythm

ABSTRACT Paroxysmal atrial tachycardia usually presents as a sudden acceleration of the atrial rate combined with modifications of the P wave morphology. A 22-year-old patient presented with very fast and very slow atrial ectopic activity. He complained of repetitive episodes of fast tachycardia, some accompanied with dizziness. When the ectopic discharge was slow, no clear-cut difference between the sinus rate and the ectopic rate was seen and thus the atrial rhythm appeared quite regular. The ectopic focus was situated deep inside the right upper pulmonary vein (RSPV). After RSPV isolation a persistent sinus rhythm was established and since then the patient has been asymptomatic for 3 years. Thus, subtle changes in the P wave morphology without a significant change in the heart rate in patients presenting with palpitations can give a clue to the diagnosis of the tachycardia and the localization of the ectopic focus.

scholarly journals Coughing as a potentially effective induction method of atrial tachycardia: a case report

2020 ◽  
Author(s):  
Reina Tonegawa-Kuji ◽  
Kenichiro Yamagata ◽  
Kengo Kusano
Keyword(s):  
Pulmonary Vein ◽  
Atrial Tachycardia ◽  
Superior Vena ◽  
Vena Cava ◽  
P Wave ◽  
Induction Method ◽  
Voluntary Cough ◽  
Wave Morphology ◽  
The Right

Abstract Background  Cough-induced atrial tachycardia (AT) is extremely rare and its electrical origin remains largely unknown. Atrial tachycardias triggered by pharyngeal stimulation, such as swallowing or speech, appears to be more common and the majority of them originate from the superior vena cava or right superior pulmonary vein (PV). Only one case of swallow-triggered AT with right inferior pulmonary vein (RIPV) origin has been reported to date. Case summary  We present a case of a 41-year-old man with recurring episodes of AT in the daytime. He underwent electrophysiology study without sedation. Atrial tachycardia was not observed when the patient entered the examination room and could not be induced with conventional induction procedures. By having the patient cough periodically on purpose, transient AT with P-wave morphology similar to the clinical AT was consistently induced. Activation mapping of the AT revealed a centrifugal pattern with the earliest activity localized inside the RIPV. After successful radiofrequency isolation of the right PV, AT was no longer inducible. Discussion  In the rare case of cough-induced AT originating from the RIPV, the proximity of the inferior right ganglionated plexi (GP) suggests the role of GP in triggering tachycardia. This is the first report that demonstrates voluntary cough was used to induce AT. In such cases that induction of AT is difficult using conventional methods, having the patient cough may be an effective induction method that is easy to attempt.

Multifocal atrial tachycardia

2018 ◽  
Author(s):  
Michael Jones ◽  
Norman Qureshi ◽  
Kim Rajappan
Keyword(s):  
Atrial Fibrillation ◽  
Sinus Rhythm ◽  
Atrial Tachycardia ◽  
The Other ◽  
P Wave ◽  
Qrs Complex ◽  
P Waves ◽  
Ectopic Beats ◽  
Atrial Rhythm ◽  
Pathophysiologic Mechanisms

Multifocal atrial tachycardia (MAT) is an atrial arrhythmia arising in the left or right atrium, or both, with multiple different P wave morphologies (at least three), with an atrial rate usually faster than 100 min−1. The atrial rhythm may be irregular; however, the defining difference between MAT and atrial fibrillation is the presence of a P wave prior to each QRS complex in MAT (but the absence of P waves in atrial fibrillation). MAT may be compared to sinus rhythm with very frequent polymorphic atrial ectopic beats, and in fact similar pathophysiologic mechanisms underlie both conditions; thus, differentiating one from the other may be difficult—the principle difference is the lack of a single dominant sinus pacemaker in MAT.

Focal (ectopic) atrial tachycardia

2018 ◽  
Author(s):  
Michael Jones ◽  
Norman Qureshi ◽  
Kim Rajappan
Keyword(s):  
Atrial Tachycardia ◽  
Sinus Node ◽  
P Wave ◽  
Ventricular Rate ◽  
Av Block ◽  
Ectopic Atrial Tachycardia ◽  
Wave Morphology ◽  
Focal Atrial Tachycardia ◽  
The Difference ◽  
The Right

Focal atrial tachycardia is an atrial arrhythmia arising in either the left or the right atrium, usually faster than 100 min−1 and regular, with a P-wave morphology that is different from the normal P-wave morphology associated with sinus rhythm—the difference in morphology being more pronounced the further away the focus lies from the sinus node. The ventricular rate is generally fast also, dependent on the nature of the atrioventricular conduction (AV); 1:1 conduction may be seen, especially in younger patients or patients with accessory pathways capable of very rapid antegrade conduction; alternatively, 2:1, Wenckebach-type, or higher-grade AV block may be seen.

A Typical P-wave Morphology in Incessant Atrial Tachycardia Originating from the Right Upper Pulmonary Vein

2000 ◽  
Vol 34 (3) ◽  
pp. 277-280
Author(s):  
Finn Hegbom ◽  
Per I. Hoff ◽  
Ole Rossvoll ◽  
Ole-Jørgen Ohm
Keyword(s):  
Pulmonary Vein ◽  
Atrial Tachycardia ◽  
P Wave ◽  
Wave Morphology ◽  
The Right

Electrocardiogram Recognition and Ablation of Atrial Tachycardia

2011 ◽  
Vol 3 (1) ◽  
pp. 80
Author(s):  
Alexander Feldman ◽  
Jonathan M Kalman ◽  
◽  
Keyword(s):  
Catheter Ablation ◽  
Atrial Tachycardia ◽  
Primary Treatment ◽  
P Wave ◽  
Wave Morphology ◽  
Focal Atrial Tachycardia ◽  
Mapping Techniques ◽  
Electrocardiogram Ecg ◽  
Surface Electrocardiogram

Focal atrial tachycardia (AT) is a relatively uncommon cause of supraventricular tachycardia, but when present is frequently difficult to treat medically. Atrial tachycardias tend to originate from anatomically determined atrial sites. The P-wave morphology on surface electrocardiogram (ECG) together with more sophisticated contemporary mapping techniques facilitates precise localisation and ablation of these ectopic foci. Catheter ablation of focal AT is associated with high long-term success and may be viewed as a primary treatment strategy in symptomatic patients.

scholarly journals An Atrial Fibrillation with Normal Limits using Signal Processing- A Review

2018 ◽  
Vol 7 (2.24) ◽  
pp. 453
Author(s):  
S. Sathish ◽  
K Mohanasundaram
Keyword(s):  
Atrial Fibrillation ◽  
Sinus Rhythm ◽  
Normal Sinus Rhythm ◽  
P Wave ◽  
Wave Duration ◽  
Normal Limits ◽  
Normal Sinus ◽  
P Wave Duration ◽  
Standard Lead ◽  
Wave Morphology

Atrial fibrillation is an irregular heartbeat (arrhythmia) that can lead to the stroke, blood clots, heart failure and other heart related complications. This causes the symptoms like rapid and irregular heartbeat, fluttering, shortness of breath etc. In India for every around 4000 people eight of them are suffering from Atrial Fibrillation. P-wave Morphology.  Abnormality of P-wave (Atrial ECG components) seen during sinus rhythm are associated with Atrial fibrillation. P-wave duration is the best predictor of preoperative atrial fibrillation. but the small amplitudes of atrial ECG and its gradual increase from isometric line create difficulties in defining the onset of P wave in the Standard Lead Limb system (SLL).Studies shows that prolonged P-wave have duration in patients (PAF) In this Study, a Modified Lead Limb (MLL) which solves the practical difficulties in analyzing the P-ta interval for both in healthy subjects and Atrial Fibrillation patients. P-Ta wave interval and P-wave duration can be estimated with following proposed steps which is applicable for both filtered and unfiltered atrial ECG components which follows as the clinical database trials. For the same the p-wave fibrillated signals that escalates the diagnosis follows by providing minimal energy to recurrent into a normal sinus rhythm.  

P-wave Morphology in Focal Atrial Tachycardia: An Updated 2021 Algorithm to Predict Site of Origin

2021 ◽  
Vol 30 ◽  
pp. S163
Author(s):  
P. Kistler ◽  
D. Chieng ◽  
I. Tonchev ◽  
H. Sugumar ◽  
A. McLellan ◽  
...  
Keyword(s):  
Atrial Tachycardia ◽  
P Wave ◽  
Wave Morphology ◽  
Focal Atrial Tachycardia
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