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Automated differentiation of wide QRS complex tachycardia using QRS complex polarity.
Commun Med (Lond)
December 2024
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA.
Background: Wide QRS complex tachycardia (WCT) differentiation into ventricular tachycardia (VT) and supraventricular wide complex tachycardia (SWCT) remains challenging despite numerous 12-lead electrocardiogram (ECG) criteria and algorithms. Automated solutions leveraging computerized ECG interpretation (CEI) measurements and engineered features offer practical ways to improve diagnostic accuracy. We propose automated algorithms based on (i) WCT QRS polarity direction (WCT Polarity Code [WCT-PC]) and (ii) QRS polarity shifts between WCT and baseline ECGs (QRS Polarity Shift [QRS-PS]).
View Article and Find Full Text PDFSevere Hyperkalemia in a Child with Vomiting and Diarrhea.
Clin Pract Cases Emerg Med
November 2024
Sidra Medicine, Department of Emergency Medicine, Ar-Rayyan, Qatar.
Case Presentation: A 13-month-old child with past medical history of congenital adrenal insufficiency presented to the emergency department with vomiting and diarrhea. Initially the child was noticed to have bradycardia with normal blood pressure. An electrocardiogram (ECG) showed tall T waves, broad QRS complex, and widened PR interval suggestive of severe hyperkalemia.
View Article and Find Full Text PDFThe response to adenosine tells all: What is the mechanism?
J Arrhythm
December 2024
Division of Cardiology, Department of Medicine Nihon University School of Medicine Tokyo Japan.
The surface electrocardiograms during a wide QRS complex tachycardia and during the injection of 10 mg of adenosine triphosphate. What is the mechanism of this wide QRS tachycardia?
View Article and Find Full Text PDFThe Pitfalls of Capture/Fusion Beats: Diagnostic Challenges in Wide QRS Complex Tachycardia.
J Cardiovasc Electrophysiol
December 2024
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan.
Ventricular Tachycardia Possibly Originated From the His-Purkinje System May Result From Aconitine Poisoning.
Ann Noninvasive Electrocardiol
January 2025
Department of Cardiology, The First Hospital of Jiaxing Affiliated Hospital of Jiaxing University, Jiaxing, China.
Article Synopsis
- - Accurate diagnosis of wide QRS complex tachycardia (WCT) is crucial for effective treatment, with the earliest source often in the His-Purkinje system.
- - Understanding the causes of WCT can significantly aid in determining the right treatment approach.
- - The article discusses specific cases showing that aconitine poisoning is a potential cause of WCT, highlighting its importance in diagnosis.
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