Final answer:
A nurse reviewing the medical record of a client at 39 weeks gestation with polyhydramnios should expect a finding such as a fetal GI anomaly, which can cause an inability to process amniotic fluid and contribute to the condition.
Step-by-step explanation:
The condition of polyhydramnios in a pregnant client at 39 weeks gestation often indicates an increased amount of amniotic fluid. In such cases, a nurse should expect findings that may point to reasons for the excess fluid. One such finding could be a fetal GI anomaly, which can lead to an inability to swallow and process the amniotic fluid properly, ultimately resulting in polyhydramnios.
Additionally, since the presence of too much amniotic fluid can significantly increase the size of the uterus, a typical finding could include a larger-than-normal fundal height. For a pregnancy at 39 weeks, a total pregnancy weight gain of 3.6 kg would be unusual and below the expected weight gain, gestational hypertension (HTN) may not be directly related to polyhydramnios, and a fundal height of 34 cm would be less than what's expected for this gestational age and condition.