Cardiac Overview

Question 1

What are 3 things that affect vessel wall friction?

Answer 1

Increase (length and fluid viscosity)

decrease (radius of vessel)

Question 2

Contraction of ventricles, aortic and pulomnary valves open

Answer 2

systole

Question 3

relaxation of ventricles, bicuspid/tricuspid open

Answer 3

diastole

Question 4

Compare and contrast stable, unstable and prinzmetal angina.

Answer 4

Stable - w/exertion, relieved by rest, nitro
Unstable - at rest, relieved by nitro
Prinzmetal - rest - vasospasm, relieved by nitro or Ca channels blockers

Question 5

What time frame distinguishes MI from angina?

Answer 5

If chest pain has occured longer than 20 minutes then an MI has occured.

Question 6

45% of MI are due to occlusion of this artery

Answer 6

LAD