ATI RN
ATI Maternal Newborn Proctored Exam
1. When reviewing the arterial blood gas values for a client, a nurse notes a pH of 7.32, PaCO2 of 48 mm Hg, and HCO3 of 23 mEq/L. What does this indicate about the acid-base balance?
- A. Respiratory acidosis
- B. Respiratory alkalosis
- C. Metabolic acidosis
- D. Metabolic alkalosis
Correct answer: A
Rationale: The given values suggest respiratory acidosis. In respiratory acidosis, the pH is low (<7.35), PaCO2 is high (>45 mm Hg), and the HCO3 is normal or slightly elevated. In this scenario, the low pH (7.32) and high PaCO2 (48 mm Hg) indicate respiratory acidosis, where there is an excess of carbon dioxide in the blood, leading to acidification of the body fluids.
2. A healthcare provider is preparing to administer an injection of Rho (D) immunoglobulin. The provider should understand that the purpose of this injection is to prevent which of the following newborn complications?
- A. Hydrops fetalis
- B. Hypobilirubinemia
- C. Biliary atresia
- D. Transient clotting difficulties
Correct answer: B
Rationale: Rho (D) immunoglobulin is given to Rh-negative individuals to prevent hemolytic disease of the newborn (HDN) caused by Rh incompatibility between the mother and the fetus. If an Rh-negative mother carries an Rh-positive fetus, there is a risk of sensitization during pregnancy or childbirth. Sensitization can lead to the production of antibodies that may attack Rh-positive red blood cells in future pregnancies, potentially causing severe hemolytic disease in the newborn, including complications like hydrops fetalis. Hydrops fetalis is a condition characterized by severe edema and fetal organ enlargement due to severe anemia and heart failure in the fetus.
3. A client who was admitted to the maternity unit at 38 weeks of gestation and who is experiencing polyhydramnios is found to have which of the following?
- A. The client is carrying more than one fetus
- B. There is an elevated level of alpha-fetoprotein (AFP) in the amniotic fluid
- C. An excessive amount of amniotic fluid is present
- D. The fetus is likely to have a congenital anomaly, be growth restricted, or demonstrate fetal distress during labor
Correct answer: C
Rationale: Polyhydramnios refers to the presence of an excessive amount of amniotic fluid around the fetus. This condition can result from various causes, such as maternal diabetes, fetal anomalies, or genetic disorders. It can lead to complications during pregnancy and delivery, such as preterm labor, placental abruption, or fetal malpresentation. Understanding this diagnosis is crucial for providing appropriate care and monitoring to ensure the best outcomes for both the mother and the fetus.
4. A client with chronic kidney disease has arterial blood gas values being reviewed by a nurse. Which of the following sets of values should the nurse expect?
- A. pH 7.25, HCO3- 19 mEq/L, PaCO2 30 mm Hg
- B. pH 7.30, HCO3- 26 mEq/L, PaCO2 50 mm Hg
- C. pH 7.50, HCO3- 20 mEq/L, PaCO2 32 mm Hg
- D. pH 7.55, HCO3- 30 mEq/L, PaCO2 31 mm Hg
Correct answer: A
Rationale: In chronic kidney disease, metabolic acidosis is common due to impaired kidney function leading to reduced bicarbonate excretion. The correct values indicating metabolic acidosis in this scenario are a low pH (acidosis), low bicarbonate (HCO3-) level, and low PaCO2 (compensation through respiratory alkalosis). Therefore, the expected values for a client with chronic kidney disease would be pH 7.25, HCO3- 19 mEq/L, PaCO2 30 mm Hg, as depicted in choice A.
5. A nurse receives report about assigned clients at the start of the shift. Which of the following clients should the nurse plan to see first?
- A. A client who experienced a cesarean birth 4 hours ago and reports pain
- B. A client who has preeclampsia with a BP of 138/90 mm Hg
- C. A client who experienced a vaginal birth 24 hours ago and reports no bleeding
- D. A client who is scheduled for discharge following a laparoscopic tubal ligation
Correct answer: A
Rationale: The nurse should prioritize seeing the client who experienced a cesarean birth 4 hours ago and reports pain first. Pain assessment and management are crucial post-cesarean birth to ensure the client's comfort and well-being. Immediate attention is needed to address the client's pain and provide appropriate interventions. The other clients may require attention but do not have an immediate postoperative concern like pain following a cesarean birth.
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