- A nonstress test is considered nonreactive (positive) if fewer than two fetal heart rate accelerations of at least 15 beats/minute occur in 20 minutes.
- A nonstress test is considered reactive (negative) if two or more fetal heart rate accelerations of 15 beats/minute above baseline occur in 20 minutes.
- A nonstress test is usually performed to assess fetal well-being in a pregnant patient with a prolonged pregnancy (42 weeks or more), diabetes, a history of poor pregnancy outcomes, or pregnancy-induced hypertension.
- A nonstress test is considered reactive (negative) if two or more fetal heart rate accelerations of 15 beats/minute above baseline occur in 20 minutes.
- A nonstress test is usually performed to assess fetal well-being in a pregnant patient with a prolonged pregnancy (42 weeks or more), diabetes, a history of poor pregnancy outcomes, or pregnancy-induced hypertension.