问题
单项选择题
Which pregnancy-related physiologic change would place the client with a history of cardiac disease at the greatest risk for developing severe cardiac problems()
A. Decreased heart rate.
B. Decreased cardiac output.
C. Increased plasma volume.
D. Increased blood pressure.
答案
参考答案：C
解析：
Pregnancy increases plasma volume and expands the uterine vascular bed, possibly increasing the heart rate and cardiac output. These changes may cause cardiac stress, especially during the second trimester. Blood pressure during early pregnancy may decrease, but it gradually returns to prepregnancy levels.