2024年10月8日 · Ventricular Tachycardia (VT) is a broad complex tachycardia originating from the ventricles. There are several different forms of VT — the most common is monomorphic VT, which originates from a single focus within the ventricles. Monomorphic VT can be difficult to differentiate from other causes of broad complex tachycardia.

2024年10月8日 · Leads V1-2 and V6 are assessed for characteristic features of VT. There are two sets of morphological criteria depending on the appearance of the QRS complex in V1: Dominant R wave in V1

In the novel Basel algorithm, VT was diagnosed in the presence of at least 2 of the following criteria: 1) clinical high risk features; 2) lead II time to first peak >40 ms; and 3) lead aVR time to first peak >40 ms.

Our review aims to provide contemporary algorithms of VT discrimination based on 12-lead ECG analysis, and characteristics which help to understand an origination/exit site of VT or premature ventricular contractions (PVC).

This is the R wave peak time in lead II, with the interval from QRS onset to first change in polarity (R or S peak) in lead 2 ≥50 ms denoting VT. The original paper reported remarkable test characteristics with an area under receiver operator curve exceeding 98 %, specificity of 99 % and PPV of 98 %, meaning the algorithm promised to ...

2020年11月3日 · DIFFERENTIATING VT FROM WIDE COMPLEX SVT. Criteria for diagnosis of VT using the 4-step Brugada algorithm: (i) Is RS complex present in any lead? -> if NO the rhythm is VT (ii) Is the RS duration >100ms in any lead? -> if YES then the rhythm is VT (iii) Is there AV dissociation? (fusion or capture beats) -> if YES then the rhythm is VT

2013年2月24日 · In 2010 Joseph Brugada et al. published a new criterion to differentiate VT from SVT in wide complex tachycardias: the R wave peak time in Lead II . They suggest measuring the duration of onset of the QRS to the first change in polarity (either nadir Q or peak R) in lead II.

2019年9月20日 · In the LLA, ventricular tachycardia (VT) is diagnosed in the presence of at least 1 of the following: (1) monophasic R wave in lead aVR; (2) predominantly negative QRS in leads I, II, and III; and (3) opposing QRS complex in the limb leads: concordant monophasic QRS in all 3 inferior leads and concordant monophasic QRS in 2 or 3 of the ...

Objective: The purpose of this study was to determine the value of ECG lead II, specifically, the duration at its beginning, defined as R-wave peak time (RWPT), in differentiating ventricular tachycardia (VT) from supraventricular tachycardia (SVT) …

Explore ECG insights on Ventricular Tachycardia using the aVR Algorithm, its clinical applications, limitations, and depolarization patterns in VT and aberrant SVT.