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EKGs - Ch 29

Structure/fxn of CV system

QuestionAnswer
Coronary artery that perfuses inferior wall Right coronary artery or left circumflex
Coronary artery that perfuses lateral wall Left circumflex
Coronary artery that perfuses anterior wall Left anterior descending
Coronary artery that perfuses septal wall Left anterior descending
Coronary artery that perfuses posterior wall Left circumflex or right coronary artery
What EKG changes will present with posterior wall MI? Depression in V1 & V2 (reciprocal changes). ST elevation in V7-V9
Lateral portion of the inferior wall is supplied by _______ Left circumflex
What does "anatomically contiguous" mean? Two leads of the same anatomical group
In leads II, III & aVF, where is the positive electrode? Left leg
In leads I & aVL, where is the positive electrode? Left arm
The location of the _____ (negative/positive) electrode determines what part of the heart the lead sees Positive
What leads are for the lateral wall? I, aVL, V5, V6
What leads are for the anterior wall? V2 - V4
What leads are for the septal wall? V1, V2
What leads are for the inferior wall? II, III, aVF
What point it used as a baseline for J point? TP segment
Created by: Thommy413
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