What is the typical rate range for torsades de pointes?

What is the typical rate range for torsades de pointes?

• A. 60-100 beats per minute
• B. 100-150 beats per minute
• C. 250-350 beats per minute
• D. 350-400 beats per minute

Answer: (C)

Torsades de pointes is a specific type of polymorphic ventricular tachycardia characterized by a distinct "twisting" pattern of the QRS complexes on an EKG. The hallmark of this arrhythmia is that it usually occurs at a rapid heart rate, typically ranging between 250-350 beats per minute. This elevated rate is indicative of the chaotic electrical activity in the heart, which is a representation of its instability.

The rapid firing rates associated with torsades de pointes can lead to a decrease in cardiac output and may ultimately progress to more serious cardiac events, such as ventricular fibrillation if not managed effectively. Understanding the rate at which torsades de pointes occurs is crucial for identifying and providing appropriate and timely treatment for patients experiencing this dangerous rhythm.