What is the term for a "run" or couplets of PABs and normal cycles?

What is the term for a "run" or couplets of PABs and normal cycles?

• A. Group beating
• B. Ventricular coupling
• C. Atrial flutter
• D. Normal sinus rhythm

Answer: (A)

The term that describes a "run" or couplets of premature atrial beats (PABs) interspersed with normal cycles is "group beating." This term is used to characterize a series of beats that occur in groups, such as when there are clusters of premature beats followed by regular sinus beats.

Group beating reflects how the heart rhythm can manifest with clusters of ectopic atrial contractions that may disrupt the normal sinus rhythm. In this context, the PABs represent early contractions that are grouped together before the rhythm returns to normal. It's an important concept in EKG interpretation as it highlights variations in atrial activity that can occur, especially in certain clinical scenarios.

Understanding this phenomenon is crucial, as it allows for recognition of underlying atrial irritability and can indicate potential issues in cardiac health. Recognizing how normal cycles can be affected by these premature atrial beats enhances one's ability to assess the overall rhythm and cardiac function comprehensively.