While caring for a woman who has had a positive contraction stress test (cst), what complication does the nurse suspect?

CST (contarction stress test) is an external fetal heart monitoring that test if the baby will stay healthy during the contraction. Positive cst is abnormal test. The test has a poor positive predictive value with false-positive results in as many as 30% of cases.So, the  first thing the nurse should do is to suspect if the test gave fase results and repeat the test.