Certified Registered Nurse Anesthetist (CRNA) Practice Exam

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Study for the Certified Registered Nurse Anesthetist (CRNA) Exam. Practice with flashcards, multiple-choice questions, hints, and explanations. Prepare effectively to succeed on your exam!

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Which leads are categorized as high lateral leads?

II, III
V5, V6
I, aVL
aVF, V4

The correct answer is: I, aVL

High lateral leads are specifically used in electrocardiography to assess the lateral wall of the left ventricle. The leads categorized as high lateral leads are Lead I and aVL. These leads reflect cardiac electrical activity from the high lateral area, which is crucial in diagnosing conditions like myocardial infarction. Lead I looks at the electrical activity from the left arm to the right arm, while aVL provides information from the left arm and incorporates views from the left side of the heart. Together, they are instrumental in detecting changes associated with ischemia or injury in the lateral wall of the heart. Understanding the positioning and significance of the leads helps in effectively interpreting ECGs and is essential knowledge for healthcare professionals involved in cardiac care.