A type 1 diabetic who is at 32 weeks' gestation is having a nonstress test for fetal well-being, since she has been having problems with glucose control. Which of the following meets the criteria for her test to be considered reactive?
1. Fetal heart rate baseline of 150 with two accelerations to 160 for 10 seconds within 20 minutes
2. Fetal heart rate baseline of 140 with one acceleration to 160 for 15 seconds within 30 minutes
3. Fetal heart rate baseline of 140 with two accelerations to 155 for 15 seconds within 20 minutes
4. Fetal heart rate baseline of 130 with two accelerations to 140 for 15 seconds within 20 minutes
3
Rationale:
1. A fetal heart rate baseline of 150 with two accelerations to 160 for 10 seconds within 20 minutes is an increase of only 10 beats per minute.
2. A fetal heart rate baseline of 140 with one acceleration to 160 for 15 seconds within 30 minutes is an increase of 20 beats per minutes for 15 seconds, but the time is 30 minutes.
3. A reactive stress test has the expected results of two episodes of fetal movement, resulting in an increase in heart rate of 15 beats per minutes for 15 seconds or more within 20 minutes. In a nonreactive stress test, the reactivity criteria are not met. A fetal heart rate baseline of 140 with two accelerations to 155 for 15 seconds within 20 minutes is perfect: 15 beats per minutes for 15 seconds in 20 minutes.
4. A fetal heart rate baseline of 130 with two accelerations to 140 for 15 seconds within 20 minutes is an increase of 20 beats per minutes.
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