单项选择题

成年患者行治疗性红细胞去除术单次去除压积红细胞的量为（）

A.200-400ml
B.400-800ml
C.800-1600ml
D.1600-2400ml
E.2400-3200ml

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单项选择题

A 72-year-old man died suddenly and unexpectedly from congestive heart failure. At autopsy, the heart weighed 580g and showed marked left ventricular hypertrophy and minimal coronary arterial atherosclerosis. A serum chemistry panel ordered prior to death showed no abnormalities. Which of the following pathologic processes best accounts for the appearance of the aortic valve seen in the figure?
A、Amyloidosis
B、Dystrophic calcification
C、Fatty change
D、Lipofuscin deposition

单项选择题

“离体蛙心灌流”实验中,动脉剪口的位置是()
A、左主动脉上,远离动脉圆锥
B、右主动脉上,远离心脏
C、左主动脉上,靠近动脉圆锥
D、动脉圆锥上
E、右主动脉上,靠近心脏