Which condition allows blood to flow back into the left atrium from the left ventricle?
Aortic valve regurgitation
Mitral valve regurgitation
Mitral valve stenosis
Aortic valve stenosis
The Correct Answer is B
A. Aortic valve regurgitation: This condition involves the backward flow of blood from the aorta into the left ventricle, not the left atrium.
B. Mitral valve regurgitation occurs when the mitral valve does not close properly, allowing blood to flow back from the left ventricle into the left atrium during systole.
C. Mitral valve stenosis involves the narrowing of the mitral valve, restricting blood flow from the left atrium to the left ventricle, but does not involve backflow into the left atrium.
D. Aortic valve stenosis is the narrowing of the aortic valve, which restricts blood flow from the left ventricle into the aorta, not back into the atrium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Nonpainful, enlarged lymph nodes: Hodgkin lymphoma typically presents with painless enlargement of lymph nodes, often in the neck, underarms, or groin.
B. Thrombocytopenia (low platelet count) is more common in advanced cases of bone marrow involvement, but it is not a typical initial manifestation of Hodgkin lymphoma.
C. Unexplained fluid retention is not a typical feature of Hodgkin lymphoma; it is more associated with heart failure or kidney disease.
D. Pancytopenia (reduction in red cells, white cells, and platelets) can occur in severe cases, but it is not a hallmark of Hodgkin lymphoma's initial presentation.
Correct Answer is B
Explanation
A. 1% would correspond to a much smaller area, such as the palm of the hand.
B. 18% :According to the rule of nines, the front of the torso (chest and abdomen) accounts for approximately 18% of the total body surface area.
C. 27% would be too large for just the front of the torso and would likely include additional areas, such as one leg or the head.
D. 36% would correspond to the entire torso (front and back) or a combination of other body areas.
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