BIO 208 - John is a 35-year-old nurse who had rheumatic
Question # 00544638
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Updated on: 06/12/2017 12:55 AM Due on: 06/12/2017
John is a 35-year-old nurse who had rheumatic fever as a child. He noticed a
persistent tachycardia and light-headedness. Chest x-rays showed an enlarged left
atrium and left ventricle. ECG analysis showed atrial fibrillation and mild pulmonary
congestion. Cardiac evaluation resulted in the following information: Cardiac output (CO) 3.4 L/min 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.
persistent tachycardia and light-headedness. Chest x-rays showed an enlarged left
atrium and left ventricle. ECG analysis showed atrial fibrillation and mild pulmonary
congestion. Cardiac evaluation resulted in the following information: Cardiac output (CO) 3.4 L/min 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. Deduce which A-V valve is incompetent, thus allowing the regurgitation.
2. Using anatomical terms, describe the location at which this valvular disorder
could best be heard.
could best be heard.
3. Which heart sound would be pronounced and lengthened?
4. If the other AV valve were incompetent instead of this one, would the CO, BP,
LAP, and RVP be different? If so, how?
LAP, and RVP be different? If so, how?
5. What are the causes of the tachycardia, light-headedness, and mild pulmonary
congestion?
congestion?
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Rating:
/5
Solution: BIO 208 - John is a 35-year-old nurse who had rheumatic