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Case studies: cardiac dysrhythmias
Published in William H. Bush, Karl N. Krecke, Bernard F. King, Michael A. Bettmann, Radiology Life Support (Rad-LS), 2017
Thomas F. Bugliosi, William H. Bush, Geoffrey S. Ferguson
Atrial tachycardias For paroxysmal supraventricular tachycardia (PSVT), you may try vagal manuevers (e.g. valsalva) or adenosine (6 mg) IV push. If the rhythm is clearly atrial fibrillation or atrial flutter, medication options include beta-blockers, though synchronized cardioversion may be necessary. Consultation with the primary-care physician is suggested.
A review of arrhythmia detection based on electrocardiogram with artificial intelligence
Published in Expert Review of Medical Devices, 2022
Jinlei Liu, Zhiyuan Li, Yanrui Jin, Yunqing Liu, Chengliang Liu, Liqun Zhao, Xiaojun Chen
According to the American Heart Association statistics, cardiovascular diseases (CVDs) have become the primary cause of death in the world [1]. Due to irregular and unhealthy lifestyles, patients with CVDs tend to become younger. The early symptoms of most CVDs are irregular heartbeats, also known as arrhythmia. Arrhythmia is generated by the disordered electrical activity of the heart, and some arrhythmia such as ventricular tachycardia (VT) and ventricular fibrillation (VF) can be life-threatening [2]. In addition, atrial fibrillation (AF), atrial flutter (AFL), premature ventricular contraction (PVC), premature atrial contraction (PAC), paroxysmal supraventricular tachycardia (PSVT), and bradycardia are also common types of arrhythmia [3]. Therefore, rapid detection and accurate diagnosis of cardiac arrhythmia are particularly essential.
Feature extraction of ECG signal
Published in Journal of Medical Engineering & Technology, 2018
Shanti Chandra, Ambalika Sharma, Girish Kumar Singh
Detection of heart rate is not the complete study of an ECG signal. A normal heart rate signal may include different abnormal rhythms or arrhythmias. These arrhythmias are classified as: supra-ventricular arrhythmias, atrial fibrillation, atrial flutter, paroxysmal supraventricular tachycardia, ventricular arrhythmias, ventricular tachycardia, ventricular fibrillation, etc. These arrhythmias are analysed by observing all components of the ECG signal (a complete study includes amplitude and duration of ECG wave components). Therefore, estimating ECG rhythms as normal or abnormal, extraction of other features besides the heart rate is equally important. This work presents the extraction of all such diagnostic features using different algorithms, these are described below.
Effectiveness and safety of implantable loop recorder and clinical utility of remote monitoring in patients with unexplained, recurrent, traumatic syncope
Published in Expert Review of Medical Devices, 2023
Pietro Palmisano, Federico Guerra, Vittorio Aspromonte, Gabriele Dell’Era, Pier Luigi Pellegrino, Mattia Laffi, Carlo Uran, Silvana De Bonis, Michele Accogli, Antonio Dello Russo, Giuseppe Patti, Francesco Santoro, Antonella Torriglia, Gerardo Nigro, Antonio Bisignani, Giovanni Coluccia, Giulia Stronati, Vincenzo Russo, Ernesto Ammendola
Arrhythmic syncope was defined when a correlation between syncope and an arrhythmia was documented, specifically when sudden onset atrioventricular block or bradycardia or atrial/ventricular tachyarrhythmias were detected at the time of the syncopal attack [1]. In the absence of syncope, arrhythmic syncope was considered likely when periods of Mobitz II second- or third-degree atrioventricular block or a ventricular pause >3 s (with the possible exception of young, trained persons, during sleep or rate-controlled atrial fibrillation), or rapid prolonged paroxysmal supraventricular tachycardia or ventricular tachycardia were detected by ILR monitoring [1].