Chapter 106 Cardiac Surgery

Question 1

Branches of the left coronary artery

Answer 1

Separates into paraconal interventricular branch and the circumflex branch

Question 2

Dominant coronary artery in dogs vs cats

Answer 2

Left coronary artery is normally the dominant coronary artery in dogs whereas the right coronary artery is the dominant artery in cats.

Question 3

Anatomy of the aortic arch

Answer 3

Aortic arch arises from the fibrous skeleton of the heart and travels craniodorsally on the left side of the trachea and esophagus

Question 4

What are the first branches of the aortic arch

Answer 4

First branch is the brachiocephalic trunk (A) which give rise to the common carotid arteries and right subclavian artery
Second branch is the left subclavian (B)

Question 5

What are the two kinds of external work the heart does

Answer 5

generates pressure (potential energy) and ejects volume (kinetic energy)

Question 6

Describe the ventricular pressure-volume plot

Answer 6

the relationship between electrical, pressure, volume, flow, and valve motion events that occur during one complete cardiac systole and diastole.

Question 7

What does the area inside the loop represent in a ventricular pressure-volume plot

Answer 7

external work done by the heart in one cycle