Atrial flutter results in rapid contractions of the atria at what rate?

Atrial flutter is characterized by a rapid and organized electrical activity in the atria, typically resulting in a distinct pattern observed on the electrocardiogram (ECG). The hallmark of atrial flutter is the "sawtooth" waveform, often referred to as "F-waves," which indicate a rapid firing rate of atrial electrical impulses.

In the case of classic atrial flutter, the atrial rate typically ranges from 240 to 340 beats per minute; however, the most common rate often cited is approximately 300 beats per minute. This specific rate correlates with the normal atrial rate observed in the typical "sawtooth" pattern that is characteristic of this condition.

Understanding the physiological mechanism behind atrial flutter can aid in recognizing the rapid atrial contractions and their implications for hemodynamics. The increased heart rate may lead to decreased ventricular filling time and thus impact cardiac output, necessitating careful monitoring and management in affected patients.