Final answer:
In pre-E, there is a decrease in cardiac output and an increase in systemic vascular resistance.
Step-by-step explanation:
In pre-E, there is a change in cardiac output and systemic vascular resistance (SVR). Cardiac output (CO) refers to the amount of blood pumped by the heart in one minute, and it is the product of heart rate (HR) and stroke volume (SV).
In pre-E, CO is often decreased due to factors such as increased peripheral vascular resistance and decreased contractility of the heart. SVR, which refers to the resistance to blood flow in the systemic circulation, is typically increased in pre-E.
Overall, pre-E leads to altered cardiac output and increased systemic vascular resistance, which can have significant effects on cardiovascular function.