MCN 538 Actual Exam Newest 2025/2026 Complete Questions And Correct Detailed Answers (Verified Answers)

Which hormone is primarily responsible for maintaining the uterine lining during early pregnancy until the placenta takes over? A. Estrogen B. Progesterone C. Prolactin D. Oxytocin Answer: B. Progesterone The nurse is educating a newly pregnant client about nutrition. Which food is the best source of folic acid to prevent neural tube defects? A. Oranges B. Spinach C. Whole milk D. Chicken breast Answer: B. Spinach At what gestational age can fetal heart tones typically be detected by Doppler ultrasound? A. 4 weeks B. 8–12 weeks C. 18–20 weeks D. 24 weeks Answer: B. 8–12 weeks 2 | P a g e A client at 12 weeks reports morning nausea and vomiting. Which nursing intervention is most appropriate? A. Eat large meals three times a day B. Drink fluids with meals C. Eat dry crackers before getting out of bed D. Avoid all carbohydrates Answer: C. Eat dry crackers before getting out of bed Which condition is most associated with the presence of HCG (human chorionic gonadotropin) in maternal serum and urine? A. Ovarian cysts B. Pregnancy C. Menopause D. Endometriosis Answer: B. Pregnancy Which is considered a probable sign of pregnancy? A. Fetal heart tones B. Chadwick’s sign C. Fetal movement felt by the mother D. Ultrasound visualization of fetus Answer: B. Chadwick’s sign Which immunization is contraindicated during pregnancy? A. Influenza (inactivated) B. Tdap C. MMR D. Hepatitis B Answer: C. MMR A client at 20 weeks gestation asks when she will begin to feel fetal movement (quickening). The best response is: A. Around 8–10 weeks 3 | P a g e B. Around 16–20 weeks C. Around 24–28 weeks D. Not until the third trimester Answer: B. Around 16–20 weeks Which condition is a risk factor for ectopic pregnancy? A. Multiple gestation B. History of pelvic inflammatory disease (PID) C. Obesity D. Gestational diabetes Answer: B. History of pelvic inflammatory disease (PID) A client at 28 weeks gestation reports dizziness and feeling faint when lying on her back. The nurse explains this is most likely due to: A. Iron deficiency anemia B. Supine hypotensive syndrome C. Gestational hypertension D. Placenta previa Answer: B. Supine hypotensive syndrome Which test is most commonly used to screen for gestational diabetes? A. Hemoglobin A1C B. 1-hour 50 g oral glucose tolerance test C. Fasting insulin D. Serum ketones Answer: B. 1-hour 50 g oral glucose tolerance test Which physiological change occurs during pregnancy? A. Decreased blood volume B. Increased cardiac output C. Decreased glomerular filtration rate (GFR) D. Decreased respiratory rate Answer: B. Increased cardiac output