Case Study # 1 John, a 40-year-old male, was born with an incompetent mitral val
ID: 3506529 • Letter: C
Question
Case Study # 1 John, a 40-year-old male, was born with an incompetent mitral valve that permits some blood backflow. Recently Josh began to have worsening symptoms especially breathlessness upon exercise and went to see his cardiologist. The doctor determined that the thickness of the myocardium of the left ventricle has significantly increased. Was the increase in thickness caused by his genetic defect? Why? (think preload & afterload) Does Josh have the typical heart sounds "lub dub"? 1. 2. Case Study # 2 Giles, a 3-year-old boy, was born with a narrowing of the aortic arch just after the ligamentum arteriosum. He is in for a routine visit. 1. 2. When comparing Giles radial and femoral pulse what do you notice? His blood pressure before the narrowing is ...? After the narrowing?Explanation / Answer
1. Yes, increased workload on the walls of the atrium can cause muscles to work harder which is why muscles develop and the wall gets thicker.
2. No, heart murmurs will be heard.