Certified Cardiovascular Technician Practice Exam

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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.

Which type of leads helps to record the electrical activity in the heart's horizontal plane?

Precordial leads
Limbs leads
Diagnostic leads
Surface leads

The correct answer is: Precordial leads

The precordial leads are specifically designed to record the electrical activity of the heart in the horizontal plane of the thorax. These leads are placed on the chest along the anterior and lateral aspects of the thorax, capturing the heart's electrical signals as they spread out from the heart and travel through the chest wall. In contrast, limb leads primarily assess the electrical activity in a vertical plane and are oriented differently, focusing more on the electrical activity from the heart as it relates to the arms and legs. While diagnostic leads and surface leads may seem relevant, they do not specifically emphasize the horizontal plane that the precordial leads are intended to measure. Thus, precordial leads are unique in their placement and purpose for recording the heart's electrical activity in that specific horizontal orientation.