Ch 19 CaseStudy3 VSD SSL
Crimes of the Heart: A Case Study on Cardiac Anatomy
Tiffany is worried about her newborn son. Ever since she brought Caleb home from the hospital it has been so hard to get him to eat and he seems to be breathing too hard all the time. At his one month check-up, the nurse tells her that Caleb has only gained one pound since he was born and Tiffany breaks into tears.
Dr. Baker checks over Caleb in the exam room, taking extra time feeling and listening to his chest. After the exam Dr. Baker says, “When I listen to Caleb’s heart I hear an extra sound called a murmur. I want to use an echocardiogram and an ECG to get a good picture of all the parts of his heart.”
After a full day of tests, Tiffany meets with Dr. Baker in his office. He explains, “After a careful review of all the information, I have discovered that Caleb has a hole in the heart muscle wall between his right and left ventricles. We call it a ventricular septal defect. That is probably why he has been so irritable and hard to feed. The hole is not very big, but he will still need to have surgery to repair it.” Although the thought of her tiny son having surgery is terrifying, Tiffany is relieved to know why things have been so tough at home.
Short Answer Questions:
1. Caleb has abnormal heart sounds that tipped the doctor off to a problem.
a. Name the normal sounds of the heart and indicate what causes these sounds.
The two major sounds that are heard in a normal heart beat sound like “lub dub”. The “lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound, “dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole. (STETHOGRAPHICS.COM)
b. In relation to the normal heart sounds, when would you expect to hear the abnormal sound Dr. Baker heard? Explain your answer.
When a valve is stenotic or damaged, the abnormal turbulent flow of blood
Tiffany is worried about her newborn son. Ever since she brought Caleb home from the hospital it has been so hard to get him to eat and he seems to be breathing too hard all the time. At his one month check-up, the nurse tells her that Caleb has only gained one pound since he was born and Tiffany breaks into tears.
Dr. Baker checks over Caleb in the exam room, taking extra time feeling and listening to his chest. After the exam Dr. Baker says, “When I listen to Caleb’s heart I hear an extra sound called a murmur. I want to use an echocardiogram and an ECG to get a good picture of all the parts of his heart.”
After a full day of tests, Tiffany meets with Dr. Baker in his office. He explains, “After a careful review of all the information, I have discovered that Caleb has a hole in the heart muscle wall between his right and left ventricles. We call it a ventricular septal defect. That is probably why he has been so irritable and hard to feed. The hole is not very big, but he will still need to have surgery to repair it.” Although the thought of her tiny son having surgery is terrifying, Tiffany is relieved to know why things have been so tough at home.
Short Answer Questions:
1. Caleb has abnormal heart sounds that tipped the doctor off to a problem.
a. Name the normal sounds of the heart and indicate what causes these sounds.
The two major sounds that are heard in a normal heart beat sound like “lub dub”. The “lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound, “dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole. (STETHOGRAPHICS.COM)
b. In relation to the normal heart sounds, when would you expect to hear the abnormal sound Dr. Baker heard? Explain your answer.
When a valve is stenotic or damaged, the abnormal turbulent flow of blood