Final answer:
Nurses should know that preeclampsia impacts organ function and occurs in the second and third trimesters, with eclampsia being a severe form that includes seizures.
Step-by-step explanation:
With regard to preeclampsia and eclampsia, nurses should be aware that preeclampsia often results in decreased function in organs such as the placenta, kidneys, liver, and brain. Preeclampsia generally occurs after the 20th week of pregnancy (during the second and third trimesters) and is a complex condition characterized by high blood pressure and often proteinuria, but severe preeclampsia can also occur without proteinuria. While the exact causes of preeclampsia and eclampsia are still not completely understood, there are several well-documented risk factors and pathophysiological changes. Eclampsia is a more severe form of preeclampsia that includes seizures and can occur during the second or third trimester or during the postpartum period.