Question

0.16 seconds is a time interval for which event in the ECG system?

• A. P wave
• B. QRS complex
• C. PR interval
• D. T wave

Hint:

Understanding ECG intervals, like the PR interval, helps diagnose cardiac conduction abnormalities.

Answer 1

The Correct Option is C

The PR interval in an ECG represents the time taken for the electrical impulse to travel from the sinoatrial (SA) node through the atria, AV node, and into the ventricles. This interval lasts approximately \( 0.12 - 0.20 \, \text{s} \). Functions: \begin{itemize} \item Reflects conduction through the AV node. \item Indicates the delay that allows the ventricles to fill with blood. \end{itemize} --- Final Answer: \[ \boxed{\text{PR interval}} \]