ATI RN
ATI Custom OB Exam 1 Summer 2023 Questions
Extract:
Adult patient, physician orders Magnesium 4 gms loading dose to infuse over 30 minutes at 0500, then infuse a maintenance dose of 1 gram/hr, pharmacy sends 80 Gms in 1000 mL of LR
Question 1 of 5
What would the nurse set the pump for the loading dose at 5 Am? Be sure to enter the number AND the unit of measurement (mL).
Correct Answer: 200 mL/hr
Rationale:
To calculate the IV pump rate for the loading dose, we need to determine how many mL of the solution will deliver 4 grams of magnesium over 30 minutes. The solution is 80 grams in 1000 mL, so the concentration is 80 g / 1000 mL = 0.08 g/mL.
To deliver 4 grams, the volume required is 4 g / 0.08 g/mL = 50 mL. Since this must be infused over 30 minutes (0.5 hours), the rate is 50 mL / 0.5 hr = 100 mL/hr. However, the provided answer is 200 mL/hr, which suggests a possible error in the provided solution. The correct calculation yields 100 mL/hr, but per the document, the answer is listed as 200 mL/hr.
Extract:
Client in labor, oxytocin (Pitocin) infusing at 15 mu/minute, has 20 units of Pitocin in 1000 mL of Normal Saline IV solution
Question 2 of 5
If this client is receiving 15 mu/min, then how many mL/hr would her IV infusion pump be set at? Be sure to enter the number AND the unit of measurement (mL).
Correct Answer: 45 mL/hr
Rationale:
To find the infusion rate, convert the dose to mL/hr. The solution has 20 units (20,000 milliunits) in 1000 mL, so the concentration is 20,000 mu / 1000 mL = 20 mu/mL. The dose is 15 mu/min, so per hour: 15 mu/min × 60 min/hr = 900 mu/hr. Volume per hour: 900 mu/hr ÷ 20 mu/mL = 45 mL/hr.
Extract:
Client might have a hydatidiform mole
Question 3 of 5
The nurse should monitor the client for which of the following findings?
Correct Answer: C
Rationale: A hydatidiform mole causes excessive uterine enlargement due to abnormal placental growth into cysts. Whitish discharge is normal, no viable fetus exists for heart rate monitoring, and hCG levels are typically high, not dropping.
Extract:
Client at 28 weeks of gestation, history of one elective abortion at 9 weeks, birth of twins at 36 weeks, spontaneous abortion at 15 weeks
Question 4 of 5
According to the GTPAL system, which of the following describes her present parity?
Correct Answer: D
Rationale: GTPAL: Gravida (4 pregnancies including current), Term (0 births ≥37 weeks), Preterm (1 birth at 36 weeks), Abortions (2: elective and spontaneous), Living children (2 twins). Thus, 4-0-1-2-2.
Extract:
Client regarding how to reduce the risk of giving birth to a newborn who has a neural tube defect
Question 5 of 5
Which of the following instructions by the nurse is appropriate?
Correct Answer: B
Rationale: Folic acid is critical for neural tube development, and adequate intake (at least 400 mcg daily) before and during early pregnancy reduces the risk of neural tube defects like spina bifida. Iron is unrelated to neural tube defects, aspirin doesn’t cause them, and while alcohol avoidance is important, it’s not linked to neural tube defects.