A child who weighs 25 kg receives a prescription for isoniazid 10 mg/kg/day by mouth once a day.

The bottle is labeled "isoniazid Oral Solution, USP 50 mg per 5 mL.”. How many mL should the nurse administer? (Enter numerical value only.

If rounding is required, round to the nearest whole number.)

Choice A rationale

A weight gain of 2 pounds (0.91 kg) in a 34-week gestation multigravida is generally considered normal. During the third trimester, it is typical for a pregnant woman to gain around 0.5 to 1 pound per week. This weight gain helps support the growing fetus and prepare the mother's body for labor and breastfeeding. However, sudden or excessive weight gain could indicate fluid retention or preeclampsia, but a 2-pound gain alone is not necessarily a concern.

Choice B rationale

1+ edema on the lower extremities is a common finding during pregnancy, especially in the later stages. It is usually due to increased blood volume and pressure on the pelvic veins from the growing uterus, which can slow the return of blood from the legs. While some degree of edema is normal, particularly in the ankles and feet, it is important to monitor for sudden or severe swelling, which could be a sign of preeclampsia.

Choice C rationale

A fundal height of 30 cm at 34 weeks gestation is concerning because it is less than the expected measurement. Fundal height typically corresponds to gestational age in centimeters (±2 cm). Therefore, at 34 weeks, the expected fundal height would be between 32 and 36 cm. A smaller fundal height could indicate intrauterine growth restriction (IUGR), oligohydramnios, or other fetal development issues, which require further evaluation by the healthcare provider.

Choice D rationale

A fetal heart rate (FHR) of 110 beats per minute (bpm) is within the normal range for a fetus. The normal FHR typically ranges from 110 to 160 bpm. Although 110 bpm is on the lower end of the normal range, it is still considered acceptable. Significant deviations from the normal range, either too low (bradycardia) or too high (tachycardia), could indicate fetal distress and require immediate attention.

Choice A rationale

Oxytocin is not involved in returning the uterus to its prepregnancy size. Instead, it helps in uterine contractions, which facilitate the expulsion of the placenta and reduce postpartum bleeding. The process of uterine involution, returning to prepregnancy size, is primarily managed by the natural decline of pregnancy hormones and autolysis of uterine tissue.

Choice B rationale

Oxytocin stimulates uterine contractions, which is its primary function during labor and after delivery. These contractions help deliver the baby during labor and facilitate the expulsion of the placenta. After delivery, oxytocin continues to induce contractions to minimize postpartum hemorrhage and aid uterine involution.

Choice C rationale

Oxytocin can activate the let-down reflex for breastfeeding, but it is not the primary expected outcome when administered IV after delivery. The main goal post-delivery is to manage uterine contractions to prevent hemorrhage and assist in expelling the placenta.

Choice D rationale

While oxytocin assists in expelling the placenta by stimulating contractions, this is not its primary use post-delivery. The placenta typically detaches and is delivered shortly after birth. Oxytocin's main role after delivery is to continue stimulating contractions to reduce bleeding and help the uterus return to a non-pregnant state.