Inpatient Obstetric Nurse (NCC) Practice Exam

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What is low normal AFI at term?

5-9.9 cm
10-14 cm
15-19 cm
20-24 cm

The correct answer is: 5-9.9 cm

Low normal amniotic fluid index (AFI) at term is defined as being in the range of 5 to 9.9 cm. An AFI measuring within this range indicates that while there is indeed some amniotic fluid present, it is on the lower end of normal. Amniotic fluid is crucial for fetal development, providing cushioning, aiding in the development of the lungs, and allowing for fetal movement. The AFI is a measurement that assesses the volume of amniotic fluid in the uterus, and it is typically determined via an ultrasound. Understanding the implications of various AFI ranges is vital for healthcare providers. An AFI below 5 cm may suggest oligohydramnios, which can pose risks such as fetal distress or complications during labor. Therefore, recognizing the threshold for low normal AFI is essential for monitoring the health and safety of both the mother and fetus in the perinatal period. The other ranges noted are considered normal or high, reflecting varying degrees of fluid that do not signify low normal AFI. The distinction helps clinicians make informed decisions regarding prenatal care and delivery plans.