2025年1月8日 · When presented with a tachydysrhythmia, start by asking yourself if the QRS complexes are WIDE (>120 msec) or NARROW (<120 msec) and if the R-R intervals are REGULAR or IRREGULAR; A good initial differential in the WIDE and REGULAR category is Ventricular Tachycardia (VTach) and Supraventricular …

The QRS complex is often used to determine the axis of the electrocardiogram, although it is also possible to determine a separate P wave axis. The duration, amplitude, and morphology of the QRS complex are useful in diagnosing cardiac arrhythmias , conduction abnormalities , ventricular hypertrophy , myocardial infarction , electrolyte ...

Torsades de pointes is a type of polymorphic ventricular tachycardia associated with QTc interval prolongation, it is characterized on the electrocardiogram (EKG) by a continuous twisting in QRS axis around an imaginary baseline 2.

2022年9月30日 · Present study demonstrated an increased in ventricular depolarization and its dispersion (QRS) in women than in men; QRS dispersion value showed significance differences when compared to normal values, only in women.

The QRS complex (ventricular complex): normal and abnormal configurations and intervals. A complete QRS complex consists of a Q-, R- and S-wave. However, all three waves may not be visible and there is always variation between the leads. Some leads may display all waves, whereas others might only display one of the waves.

2013年7月13日 · Torsades de pointes, or polymorphic ventricular tachycardia, is a ventricular tachycardia precipitated by and associated with long QT Syndrome. Long QT Syndrome can be congenital or acquired. Torsades is life-threatening, and can be made worse by many drugs, including some of the drugs used to treat VT.

Torsades de pointes ventricular tachycardia is a specific form of polymorphic ventricular tachycardia in patients with a long QT interval. It is characterized by rapid, irregular QRS complexes, which appear to be twisting around the electrocardiogram (ECG) baseline.

The extrasystole likely causes transmural dispersion of the myocardium, possibly sustaining re-entry? Explore ECG insights on Torsades de Pointes, including differences from Polymorphic VT, QT interval prolongation, and repolarization dispersion.

2023年8月14日 · The QRS width is useful in determining the origin of each QRS complex (e.g. sinus, atrial, junctional or ventricular). Narrow complexes (QRS < 100 ms) are supraventricular in origin. Broad complexes (QRS > 100 ms) may be either ventricular in origin, or due to aberrant conduction of supraventricular complexes (e.g. due to bundle branch block ...

2024年10月14日 · When presented with a tachydysrhythmia, start by asking yourself if the QRS complexes are WIDE (>120 msec) or NARROW (<120 msec) and if the R-R intervals are REGULAR or IRREGULAR. A good initial differential in the NARROW and IRREGULAR category is atrial fibrillation with rapid ventricular rate (Afib with RVR), atrial flutter (aflutter) with ...