In a prenatal assessment, which finding should raise concern about potential complications?

A decrease in fetal activity noted by the client is a significant finding that should raise concern about potential complications. This decrease can indicate several issues, including fetal distress or potential compromise to the fetus. Monitoring fetal movements is an important part of prenatal care, as a consistent pattern of movement is a sign of well-being. A noticeable reduction in activity may warrant further investigation, typically through a non-stress test or other forms of fetal monitoring to ensure that the fetus is healthy and not in distress.

While the other options may indicate discomfort or common issues that can occur during pregnancy, they do not carry the same level of urgency or potential risk to the fetus. Sudden weight gain associated with edema can be a sign of preeclampsia, but this often requires additional signs like hypertension for a full assessment. Cramping during the third trimester can be related to ligament stretching or Braxton Hicks contractions, which are usually benign. Intermittent nausea and vomiting, as long as there is no dehydration, is also relatively common and not necessarily indicative of serious complications. Thus, the decrease in fetal activity stands out as a critical finding requiring prompt attention and intervention.