Thus, each QRS complex will be preceded by a P wave; however, each P wave will have a different morphology because they originate from different areas. By definition, multifocal atrial tachycardia must have at least three distinctly different P wave morphologies and a ventricular ra...
2. 房性心动过速(atrial tachycardia)简称房速,指起源于心房且无需房室结参与维持的心动过速。发生机制包括自律性增加、折返与触发活动。根据起源点不同,分为局灶性房性心动过速(focal atrial tachycardia)和多源性房性心动过速(multifocal atri...
Focal atrial tachycardia arising from the cavotricuspid isthmus with saw-tooth morphology on the surface ECG: electrocardiographic and electrophysiologic characteristicsBackground Limited information is available about focal atrial tachycardia (AT) arising from cavotricuspid isthmus (CTI).Hirokazu Sato...
Tachycardia Chest pain Fatigue Dyspnea Syncope Confusion Mild dyspnea Embolic event If symptoms are atypical → notice signs of the underlying disorder (e.g., exophthalmos in hyperthyroidism , murmur in the case of a valvular defect) Complications of long-standing AF : Signs of heart fa...
Exploring Potential New Treatment for Ventricular Tachycardia June 19, 2024 — When electrophysiologistEugenio Cingolani, MD, isn’t seeing patients, he can usually be found in his ... June 19, 2024 Sponsored Content Blog|ECG BLOG: Moving Beyond Holter ECG: The Rise in Next Generation Technolog...
Chest pain and/or tachycardia How do the EKG patterns differ for AFib and VFib? The EKG patterns in most cases are diagnostic for AFib and/or VFib because of the characteristic waveforms each produces. Normal ECG wave strip pattern Enlarged P, QRS Complex, and T wave in a normal ECG Wav...
Narrow complex tachycardia at 150 bpm (range 130-170)? Yes -> Suspect flutter! Turn the ECG upside down and closely examine the inferior leads (II, III + aVF) for flutter waves Vagal Manoeuvres +/- Adenosine Atrial flutter will not usually cardiovert with these techniques (unlikeAVNRT), al...
Atrial fibrillation is a supraventricular tachycardia featured by a chaotic electro-mechanical activity of the atria. At the ECG, the usual P wave is replaced by frequent “f” waves (> 400/m), followed by irregular QRS complexes of ventricular activity, since only some electrical impulses are ...
Also, definite diagnosis of clinical AF is established only after confirmation by a conventional 12-lead ECG or single-lead ECG strip with at least 30 seconds of AF. In line with ESC's2016 AF guidelines, the new iteration classifies AF as first diagnosed, paroxysmal, persistent, long-standing...
Background: The mechanisms of atrial tachycardia (AT) related to the left atrial anterior wall (LAAW) are complex and can be challenging to map in patients after catheter ablation for atrial fibrillation (AF) or cardiac surgery. We aimed to investigate the electrophysiological characteristics AT an...