Human Anatomy Case Study Essay example

758 Words Oct 11th, 2015 4 Pages
Biol 1120
Cardiovascular Case Study
Name ______________________________________________

A 32-year old nurse who has rheumatic fever as a child noticed a persistent tachycardia and light-headedness. Upon examination, chest x rays showed an enlarged left atrium and left ventricle. ECG analysis showed atrial fibrillation. There was also mild pulmonary congestion. Cardiac evaluation resulted in the following information:

Cardiac output (CO) 3.2L/min. SV = 40mls Blood pressure (BP) 100/58 mm Hg Left Atrial pressure (LAP) 16 mm Hg Right ventricular pressure (RVP) 44/8 mm Hg

Heart sounds revealed valvular regurgitation

1. Answer all questions with material that explains your answer. Yes/no answers receive NO credit.
2. Submit
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In some cases, the prolapsed valve lets a small amount of blood leak backward through the valve, which may cause a heart murmur. Also, on a EKG, there is no visible P wave.

3. Describe, using surface anatomy, the location at which this valvular disorder could best be heard. (2pts)

This mitral valve disorder could be best heard at the left sternal edge, between the 4th and 5th ribs and near the apex of the heart. A Chest X- Ray could show an enlarged left atrium and left ventricle. The mitral valve is located on the left side of the heart therefore would be in the middle of the mediastinum at the left sternal edge.

4. Draw a normal EKG, label and explain what the deflections wave mean. (2pts. ) Do you expect to see a normal EKG for this patient? What will it look like? ( 3 points)

5. Considering the medical problem that this patient is experiencing, what are the causes of 1. tachycardia, 2. light-headedness, and 3. mild pulmonary congestion? ( 6 pts, address each one)

According to The American Heart Association, tachycardia is a heart rate of more than 100 beats per minute (BPM) in adults. Her blood pressure is 100/58 mm Hg .This is caused by electrical signals in the heart's upper chambers firing abnormally, which interferes with electrical signals coming from the sinoatrial node . A series of early beats in the atria speeds up the

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