If a multigravida at 28 weeks has a fundal height of 29 cm, what should the nurse advise?

In assessing fundal height, it is important to understand that the fundal height in centimeters typically corresponds closely to the gestational age in weeks, especially between 20 to 36 weeks of pregnancy. In this case, the multigravida patient is 28 weeks along and has a fundal height measuring 29 cm, which is only slightly above the expected measurement for her gestational age. This discrepancy of just 1 cm is not clinically significant and falls within the normal range of variability, suggesting that her pregnancy is progressing well.

Therefore, advising the mother that her pregnancy is progressing well is appropriate, as it provides reassurance without indicating any immediate concern. In some instances, smaller or larger fundal heights may warrant further evaluation, but a measurement that is relatively consistent with gestational age does not necessitate additional diagnostic procedures or referrals.

The other options involve either taking excessive actions or introducing unnecessary interventions based on the current fundal height measurement, which in this case is normal enough to support a straightforward reassurance and no immediate changes in care.