What is the term used to describe 'twisting of points' in relation to ventricular tachycardia?

The term that describes 'twisting of points' in relation to ventricular tachycardia is known as Torsades de pointes. This specific type of ventricular tachycardia is characterized by a distinctive pattern on the electrocardiogram (ECG), which appears as rapid, irregular changes in the amplitude of consecutive QRS complexes, resembling a twisting or spiraling pattern around the baseline.

The name "Torsades de pointes" is derived from the French term meaning "twisting of the points," reflecting this characteristic morphology. This condition often occurs in the context of a prolonged QT interval and can be triggered by various factors, including certain medications, electrolyte imbalances, or underlying heart diseases. The recognition of Torsades de pointes is critical as it may lead to more severe ventricular arrhythmias or sudden cardiac arrest if not treated promptly.

In contrast, ventricular fibrillation describes a chaotic and disorganized electrical activity in the ventricles, leading to ineffective heart contractions. Polymorphic ventricular tachycardia is a broader category where QRS complexes vary in shape, but it does not specifically denote the twisting pattern associated with Torsades de pointes. Atrial flutter, on the other hand, pertains to a