What does the term "torsades de pointes" refer to?

• A. A stable form of ventricular tachycardia
• B. A variation of polymorphic ventricular tachycardia
• C. A common atrial arrhythmia
• D. A type of bradycardia

Answer: (B)

The term "torsades de pointes" specifically refers to a form of polymorphic ventricular tachycardia characterized by a distinctive twisting of the points on the electrocardiogram (ECG) waveform. It is often associated with a prolonged QT interval and can result from various causes, including certain medications, electrolyte imbalances, and congenital conditions.

Torsades de pointes is recognized for its variable cycle length and the unique appearance of the QRS complexes changing in amplitude and direction. This characteristic twisting pattern is what distinguishes it from other types of arrhythmias, including stable forms of ventricular tachycardia or bradycardia, which do not exhibit this polymorphic nature or twisting pattern.

In summary, the correct choice highlights the arrangement and nature of electrical disturbances observed in this condition, reinforcing the understanding of its clinical significance in telemetry and emergency care contexts.