MRCP detail

Question 1

Which arteries branch off the L coronary artery and the R coronary artery and what areas do they supply?

Answer 1

L coronary arises from above the posterior aortic cusp.
L coronary gives rise to 1) L anterior descending artery (supplies majority of the anterior left ventricle) 2) Circumflex artery (supplies postero-lateral left ventricle).
R coronary gives rise to 1) Posterior interventricular artery which supples the interventricular septum.

Question 2

BNP is normal in which cardiac event?

Answer 2

unstable angina

Question 3

What test is done after an MI for risk stratification?

Answer 3

Exercise test. If positive, next step is to refer for coronary angiography to see if prognostic disease that needs coronary artery bypass grafting.

Question 4

Risk of sudden cardiac death in an asymptomatic patient with severe aortic stenosis with gradient 85mmHg?

Answer 4

Less than 5%.
Risk is LOW so you monitor them until they develop symptoms.

When symptomatic - TAVI. (transcatheter aortic valve replacement)

Question 5

Normal QRS and PR interval duration?

Answer 5

QRS complex <100ms
PR interval <200ms