a nurse is caring for a patient at 38 wks of gestation & has a large amount of painless, bright red vaginal bleeding. the patient is placed on a fetal monitor indicating a regular FHR of 138/min & no uterine contractions. the patient's vital signs are: BP 98/52 mm Hg, HR 118/min, RR 24/min, & temp 36.4° C (97.6° F). what is the priority nursing action?