What is the total number of rows present in the penta lead?

The total number of rows present in a penta lead configuration is four. This configuration typically consists of five leads—three standard leads designated as the limb leads (I, II, III) and two augmented leads (aVF, aVL). Each of these leads corresponds to a specific row in the lead arrangement.

Understanding the structure of the penta lead is crucial for interpreting ECG signals and ensuring accurate readings, particularly in monitoring heart activities. Each lead provides different electrical views of the heart, which is essential for a comprehensive analysis. The four rows correspond to these distinct perspectives, with each lead representing a different combination of electrodes. This allows healthcare professionals to assess cardiac function effectively.

The other options, including three, five, and six rows, do not accurately reflect the arrangements typically associated with a penta lead setup in electrocardiography, underscoring the importance of understanding the correct lead configurations for accurate clinical interpretation.