Match the description with the associated stage of labor.

Choice A rationale: Amniotic Fluid Index (AFI) assesses the amniotic fluid volume, an important indicator of fetal well-being. Normal AFI ranges from 5 to 24 cm. Abnormal levels may indicate potential complications such as oligohydramnios or polyhydramnios.

Choice B rationale: Fetal breathing movements are a key component of the biophysical profile, reflecting fetal central nervous system integrity. Typically observed for at least 30 seconds in a 30-minute period, absence may suggest hypoxia or CNS issues.

Choice C rationale: Fetal weight is not included in the BPP as it does not directly measure acute fetal well-being. It is assessed through ultrasound for growth monitoring and determining if the fetus is appropriate for gestational age.

Choice D rationale: Fetal tone evaluates fetal central nervous system function by observing limb or trunk movements. Normal tone includes flexion and extension movements, while decreased tone may indicate hypoxia or CNS dysfunction.

Choice E rationale: Non-Stress Test (NST) measures fetal heart rate accelerations in response to fetal movements. A reactive NST indicates fetal well-being, with at least two accelerations within 20 minutes, while a non-reactive NST may require further evaluation.

Choice F rationale: Fetal movement assessment involves counting gross body movements over a specified period. At least three movements in 30 minutes are considered normal, reflecting fetal CNS integrity. Decreased movement may indicate compromised fetal health.

Choice A rationale: Performing a sterile vaginal examination (SVE) is important for assessing cervical dilation and effacement, but it does not address the immediate concern of a Category 3 fetal heart rate tracing, which indicates fetal distress and requires prompt intervention.

Choice B rationale: Placing the client in a side-lying position can improve uteroplacental blood flow and oxygenation to the fetus by relieving compression on the inferior vena cava and enhancing venous return, thereby reducing fetal distress observed in Category 3 tracings.

Choice C rationale: Applying oxygen at 10 L/min via a venturi mask increases maternal oxygenation, which can enhance oxygen delivery to the fetus. This intervention is crucial in addressing fetal distress and improving fetal oxygenation, as observed in Category 3 fetal heart rate tracings.

Choice D rationale: Initiating a bolus of primary IV fluids can improve maternal blood volume and circulation, thereby enhancing uteroplacental perfusion and fetal oxygenation. This intervention is important in managing Category 3 fetal heart rate tracings and reducing fetal distress.

Choice E rationale: Increasing the oxytocin infusion to 13 mu/min is not appropriate as it can lead to hyperstimulation of the uterus, reducing uteroplacental blood flow and exacerbating fetal distress. In Category 3 tracings, the oxytocin infusion should be discontinued to reduce contractions.