Which assessment provides complementary information to fetal heart rate monitoring?

A biophysical profile (BPP) offers complementary information to fetal heart rate monitoring by assessing the unborn baby's well-being through a combination of factors. The BPP typically includes an evaluation of fetal heart rate patterns in response to movement, as well as assessments of fetal movements, tone, respiration, and the amount of amniotic fluid. This comprehensive approach helps to identify potential fetal distress or complications that may not be detected by monitoring heart rate alone.

The other options, while important for overall maternal and fetal health, don't provide the same integrative assessment of the fetus's condition. Routine maternal blood tests primarily evaluate maternal health and do not focus on the fetal condition. Weekly prenatal visits are crucial for monitoring the mother's health trends and ensuring a healthy pregnancy but may lack the detailed insights regarding fetal well-being provided by a BPP. Standard ultrasounds can monitor fetal development and structure but do not evaluate the dynamic aspects of fetal heart function and immediate well-being in the same way a BPP does.