Registered Cardiovascular Invasive Specialist (RCIS) Practice Test

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

Prepare for the Registered Cardiovascular Invasive Specialist Test with detailed quizzes, flashcards, and explanations for each question. Equip yourself for exam success!

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.

ST elevation in leads V5, V6, Lead 1, and AVL suggests occlusion of which coronary artery?

RCA
LCX
LAD
Diagonal artery

The correct answer is: LCX

ST elevation in leads V5, V6, Lead I, and aVL is indicative of occlusion in the left circumflex artery (LCX). The LCX primarily supplies the lateral wall of the left ventricle, and the leads mentioned are positioned to monitor this particular region of the heart. In a 12-lead ECG, leads V5 and V6 reflect the lateral wall, while Lead I and aVL provide additional information about the high lateral wall of the heart. When these leads show ST elevation, it suggests that there is ischemia or infarction occurring in areas supplied by the LCX. This correlation is crucial for diagnosing the exact coronary artery involved in a myocardial infarction. The other options pertain to different areas of the heart supplied by other arteries, leading to different patterns on an ECG. The RCA primarily supplies the inferior wall, the LAD is associated with the anterior wall, and diagonal branches of the LAD target specific areas of the anterior wall. Understanding this relationship is essential for appropriating treatment and management in clinical scenarios.