CVS

Question 1

MI + bradycardia indicates that the patient is likely to be suffering an MI in what region?

Answer 1

Inferior MI

Inferior myocardium shares its blood supple (from the right coronary artery) with the SA and AV node

Question 2

Machinery murmur

Answer 2

Patent ductus arteriosus causes a continuous machinery murmur which is loudest during systole.

If the duct is small, it might be asymptomatic.

Larger ducts can cause:

• Left-to-right shunt resulting in circulatory compromise
• Occasionally in the development of Eisenmenger’s syndrome (pulmonary hypertension causes shunt reversal)