Coronary Arteries Flashcards Preview

Cardiovascular > Coronary Arteries > Flashcards

Flashcards in Coronary Arteries Deck (15):
1

Where do the 2 main coronary arteries arise from?

Sinuses behind 2 of the cusps of the aortic valve at the root of the aorta

2

Describe the path of the left coronary artery

Descends at interventricular septum, at the top the left circumflex artery branches off to the LA. As we continue down, more branches emerge but the 2 main ones are the anterior interventricular (or left anterior descending) and the diagonal branch. (Going left)

3

Describe the path of the right coronary artery

Descends at the join of the RA and RV. At the top the sino-atrial nodal branch branches off and as it descends more branches appear. The main branch is inferior and crosses the RV, the right marginal branch.

4

How does venous blood from the coronary veins, return to the heart?

Via the coronary sinus

5

Where does the posterior descending branch come from?

85% of people - branch of the right coronary artery
15% of people - branch of left coronary artery

6

What relieves angina?

Rest and glyceryl trinitrate (GTN)

7

Define angor animi

Feeling of impending death, a symptom of MI

8

Which branch supplies the posterior left ventricle?

Circumflex

9

What is the acute ECG change for a MI?

ST segment elevation

10

Which coronary artery is most likely to be responsible for an anteroseptal MI?

Left anterior descending

11

Which coronary artery is most likely to be responsible for an anteroapical MI?

Left anterior descending

12

Which coronary artery is most likely to be responsible for an anterolateral MI?

Circumflex

13

Which coronary artery is most likely to be responsible for an extensive anterior MI?

Left coronary artery (blockage in proximal part)

14

Which coronary artery is most likely to be responsible for a posterior MI?

Right coronary artery

15

Which coronary artery is most likely to be responsible for an inferior MI?

Right coronary artery