What is a classic sign of atrial flutter on a physical exam?

What is a classic sign of atrial flutter on a physical exam?

• A. A slow and irregular pulse
• B. A rapid, regular pulse
• C. An absent pulse
• D. A bounding pulse

Answer: (B)

Atrial flutter is characterized by a rapid reentrant circuit typically located within the right atrium that leads to a distinctive rhythm. On physical examination, one of the classic signs of atrial flutter is a rapid and regular pulse. This is due to the atrial contractions occurring at a rate that is often steady, frequently around 240 to 340 beats per minute, although the ventricular response can vary depending on the conduction through the atrioventricular node. The pulse may feel regular and rapid, usually more consistent than the pulse observed in conditions like atrial fibrillation, which is often irregularly irregular. In atrial flutter, the ventricular rate can also be controlled, maintaining a more uniform rhythm compared to other arrhythmias. Recognizing this rapid, regular pulse is crucial for establishing an accurate diagnosis and understanding the underlying mechanism of the arrhythmia being observed.

Atrial flutter is characterized by a rapid reentrant circuit typically located within the right atrium that leads to a distinctive rhythm. On physical examination, one of the classic signs of atrial flutter is a rapid and regular pulse. This is due to the atrial contractions occurring at a rate that is often steady, frequently around 240 to 340 beats per minute, although the ventricular response can vary depending on the conduction through the atrioventricular node.

The pulse may feel regular and rapid, usually more consistent than the pulse observed in conditions like atrial fibrillation, which is often irregularly irregular. In atrial flutter, the ventricular rate can also be controlled, maintaining a more uniform rhythm compared to other arrhythmias. Recognizing this rapid, regular pulse is crucial for establishing an accurate diagnosis and understanding the underlying mechanism of the arrhythmia being observed.