The nurse is caring for several pregnant women. Which woman would the nurse identify as being at highest risk for having a child born with Down syndrome?
a woman with a 2-year-old child diagnosed with Turner syndrome at birth
a woman at 24 weeks' gestation having an amniocentesis
a women at 28 weeks' gestation who will be 37 years old at the time of delivery
a women whose husband's family has a history of genetic disorders