The nurse is reviewing antepartum tests for a client newly admitted to the labor and delivery unit.
Which diagnostic test requires follow-up? See the exhibit.
The nurse is reviewing antepartum tests for a client newly admitted to the labor and delivery unit.
Which diagnostic test requires follow-up? See the exhibit.
A. Contraction stress test (CST)
[5%]
B. Nonstress test (NST)
[5%]
C. Fetal heart rate via transabdominal ultrasound
[6%]
D. Vaginal culture for group B streptococcus (GBS)
[84%]
Statistics
Subject/Lesson
Subject
Maternal & Newborn Health
Lesson
Antepartum
Client Need
Test Plan
Health Promotion and Maintenance
Related Topic
Ante/Intra/Postpartum and Newborn Care
Item Type
Item Type
Analysis
Explanation
Choice D is correct. Vaginal and rectal cultures to test for group B streptococcus (GBS) are done between 36 weeks and 37 weeks. A positive finding requires follow-up because the client will require prescribed antibiotics to prevent complications such as intra-amniotic infection and endometritis.
Choice A is incorrect. No late fetal heart rate decelerations are consistent with a negative contraction stress test (CST). A negative CST is a reassuring finding.
Late decelerations present with a minimum of 50% of the contractions is a positive CST. A positive CST is a nonreassuring finding.
Choice B is incorrect. A reactive nonstress test is a reassuring finding. In this finding, two or more fetal heart rate accelerations within a 20-minute period were observed. These accelerations should be at least 15 beats per minute (bpm) above baseline for 15 seconds.
Choice C is incorrect. The fetal heart rate is within normal limits. The normal range for the fetal heart rate is 110-160 beats/minute. The fetal heart rate can be obtained 10 to 12 weeks by Doppler and 18 to 20 weeks by fetoscope. A transvaginal ultrasound can detect the fetal heart rate as early as 6 weeks.
Related Videos
2 Key Topics
3rd Trimester
28.1 Pregnancy Basics & Early Assessment
Additional Info
✓ Screening for group B streptococcal infection during pregnancy is routinely done between 36 and 37 weeks gestation.
✓ Screening is done with rectal, vaginal, and urine cultures.
✓ Treatment is with prescribed antibiotics such as ampicillin.
