Final answer:
During pregnancy, there are changes in hemodynamic parameters such as CO and SV, which increase, while LV mass and E/E' ratio may decrease. EF and fractional shortening may remain relatively unchanged.
Step-by-step explanation:
During pregnancy, there are several hemodynamic changes that occur in the body. These changes include an increase in cardiac output (CO) and stroke volume (SV), as well as a decrease in left ventricular (LV) mass and the E/E' ratio. The ejection fraction (EF) and fractional shortening may remain relatively unchanged.
For example, the increased blood volume during pregnancy leads to an increase in CO and SV. This is necessary to meet the increased demands of fetal nourishment and waste removal. However, the LV mass may decrease due to changes in the heart's structure and function. The E/E' ratio, which is used to assess diastolic function, may also decrease.