A 55-year-old male was admitted to the hospital with heart failure. He complains of increasing shortness of breath on exertion and needing to sleep on three pillows at night
On physical assessment, the nurse determines that his ankles and feet are very swollen. Which of these symptoms reflect left-sided heart failure and which reflect right-sided heart failure?
What will be an ideal response
Because the heart is a double pump, each side can initially fail independently of the other. If the left side fails, pulmonary congestion occurs. The right side of the heart continues to propel blood to the lungs, but the left side does not adequately eject the returning blood into the systemic circulation. Thus, blood vessels in the lungs become engorged with blood, pressure within them increases, and fluid leaks from the circulation into the lung tissue, causing pulmonary edema. Shortness of breath and difficulty breathing in a prone position may occur.
If the right side of the heart fails, peripheral congestion occurs. Blood stagnates within body organs, and pooled fluids in the tissue spaces impair the ability of body cells to obtain adequate nutrients and oxygen and to rid themselves of wastes. Edema is most noticeable in the extremities (feet, ankles, and fingers).
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What will be an ideal response
The right ventricle pumps blood to the
A) right and left lungs. B) left ventricle. C) left atrium. D) aorta. E) right atrium.
Which is NOT true about fatty acid synthesis?
A. takes place in the cytosol of cells B. results in molecules with an even number of carbon atoms only C. requires more energy than is produced by the catabolism of the same fatty acid D. begins with a molecule of acetyl coenzyme A E. The enzymes that catalyze it are in the same location as those that mediate fatty acid catabolism.
Match the following terms to the correct answer:
1. an AV valve that has three flaps 2. a semilunar valve that has the right ventricle on one side 3. also called the mitral valve 4. has three cuplike leaflets and has the aorta on one side A. tricuspid valve B. bicuspid valve C. aortic valve D. pulmonary valve