What should be done for a 28-week pregnant patient experiencing a single episode of vaginal bleeding?

In the case of a 28-week pregnant patient experiencing a single episode of vaginal bleeding, performing an ultrasound is the most appropriate initial step. This imaging technique allows healthcare providers to assess the condition of the fetus and the placenta, identify any potential sources of bleeding, and rule out complications such as placenta previa or placenta abruption.

Ultrasound is a non-invasive procedure that can provide immediate information about the health of the pregnancy, including fetal heart rate, placental position, and amniotic fluid levels. It is essential in ensuring both maternal and fetal safety, allowing for appropriate management based on the results.

Other options, such as prescribing bed rest, referring to a specialist, or administering medication, may be indicated depending on the findings of the ultrasound and the clinical situation. However, without first determining the cause of the bleeding through an ultrasound, it would not be prudent to take such actions.