Certified Cardiovascular Technician Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Cardiovascular Technician Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the negative electrode position for lead II in a 12-lead electrocardiogram (ECG)?

Left arm
Left leg
Right arm
Right leg

The correct answer is: Right arm

In the context of a 12-lead electrocardiogram (ECG), understanding the electrode placements is crucial for accurately interpreting the heart's electrical activity. For lead II, the typical configuration involves the positive electrode placed on the left leg and the negative electrode on the right arm. This configuration aligns with the vector of depolarization that travels from the right arm to the left leg, capturing the electrical activity of the heart in that direction. The right arm serves as the negative electrode, allowing for a reference point against which the positive electrode on the left leg can measure the electrical potentials generated by the heart. This arrangement is essential for obtaining an accurate representation of the heart's electrical axis as it moves downward and to the left, which is characteristic of normal sinus rhythm. The correct positioning ensures that the lead captures the largest possible signal related to the heart's activity between these two points, forming a crucial component of the comprehensive assessment provided by the 12-lead ECG.