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AACN CSC Review Course Session 1 Questions and Answers $10.49   Add to cart

Exam (elaborations)

AACN CSC Review Course Session 1 Questions and Answers

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  • AACN CSC

at rest the myocardium extracts ___% of available oxygen o :## 70% normal SvO2 in heart o :## 30-35% normal SvO2 in body o :## 60-80% DBP - LVEDP o :## coronary perfusion pressure normal coronary perfusion pressure o :## > 40 mmHg coronary circulation is a constant due to _____________...

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  • September 2, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • AACN CSC
  • AACN CSC
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MASTER01
2024/2025 1|Page




AACN CSC Review Course Session 1 Questions and
Answers
at rest the myocardium extracts ___% of available oxygen

o :## 70%




normal SvO2 in heart

o :## 30-35%




normal SvO2 in body

o :## 60-80%




DBP - LVEDP

o :## coronary perfusion pressure




normal coronary perfusion pressure

o :## > 40 mmHg




coronary circulation is a constant due to _______________________.

o :## auto-regulation




the coronary arteries originate behind the respective ________ valve leaflets

, 2024/2025 2|Page


o :## aortic




bifurcates into the LAD and Cx arteries; 2-5cm long; not grafted directly

o :## left main coronary artery




the left main is inaccessible without dividing the _____ and _____

o :## PA and aorta




what are the 3 main segments of the coronary circulation

o :## left main, circumflex, RCA




coronary artery that courses AV groove beneath LAA; has obtuse marginal branches

o :## circumflex artery




supplies anterior wall, ant 2/3 septum, post/inf LBB, bundle of his; RBB, LV apex

o :## LAD




supplies SA node (45%), AV node (10%), inferior LV, lateral LV wall, LA, post/inf LBB

o :## Cx artery




3 vessels of equal diameter between LAD and Cx; supplies large area of LV b/t LAD

and Cx arteries; usually subepicardial; may give pt a perfusion advantage

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