What does the term "bipolar" in bipolar leads signify?

What does the term "bipolar" in bipolar leads signify?

• A. It refers to the use of two electrodes positioned close together
• B. It indicates a positive and negative measurement between two electrodes
• C. A type of lead that measures only one point
• D. It refers to leads that require three placement points

Answer: (B)

The term "bipolar" in bipolar leads specifically signifies the use of a positive and negative measurement between two electrodes. This type of lead is designed to capture the electrical activity of the heart by comparing the electrical potential differences between two points. In bipolar leads, one electrode acts as the positive (or exploring) electrode while the other acts as the negative (or reference) electrode. This arrangement allows for the recording of changes in voltage that reflect the heart's electrical signal as it depolarizes and repolarizes during each heartbeat.

Bipolar leads play a crucial role in providing a waveform from which clinicians can assess the heart's rhythm, identify any abnormalities, and monitor heart function effectively. Understanding this concept is fundamental in interpreting EKG readings accurately and understanding how electrical signals propagate throughout the heart.