A client is admitted with atrial fibrillation. The physician noted a pulse deficit. The pulse deficit measures which of the following（）
A. The difference between apical and radial pulse rates.
B. The difference between systolic and diastolic blood pressures.
C. The amount of blood ejected from the left ventricle per minute.
D. The percentage of blood emptied from the ventricle during contraction.
参考答案：A
解析：
The pulse deficit measures the difference between the apical pulse rate and radial pulse rate. Pulse pressure is the difference between systolic and diastolic blood pressures. Cardiac output is the amount of blood ejected from the left ventricle per minute, and ejection fraction refers to the percentage of blood emptied from the ventricle during contraction.