Nokea
Which clinical intervention is the only known cure for preeclampsia?
- A. Magnesium sulfate
- B. Delivery of the fetus
- C. Antihypertensive medications
- D. Administration of aspirin (ASA) every day of the pregnancy
Correct Answer: B
Rationale: The correct answer is B: Delivery of the fetus. Preeclampsia is a serious condition that can only be cured by delivering the baby and placenta. This is because the placenta is the source of the problem in preeclampsia. Other options like magnesium sulfate, antihypertensive medications, and aspirin can help manage symptoms but do not cure the underlying condition. Magnesium sulfate is used to prevent seizures in severe cases, antihypertensive medications control high blood pressure, and aspirin may be used for prevention but not as a cure. Delivery is the definitive treatment to resolve preeclampsia and prevent further complications for both the mother and the baby.
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A blood-soaked peripad weighs 900 g. The nurse would document a blood loss of _____ mL.
- A. 1800
- B. 450
- C. 900
- D. 90
Correct Answer: C
Rationale: The correct answer is C (900 mL). To calculate blood loss, divide the weight of the blood-soaked pad (900 g) by the specific gravity of blood (1 g/mL). This gives 900 mL. Choice A (1800 mL) is incorrect as it doubles the correct amount. Choice B (450 mL) is incorrect as it halves the correct amount. Choice D (90 mL) is incorrect as it divides the correct amount by 10. The key is to convert the weight to volume using the specific gravity of blood to determine the correct blood loss measurement.
Which condition is most commonly associated with late decelerations of the fetal heart rate?
- A. Head compression
- B. Maternal hypothyroidism
- C. Uteroplacental insufficiency
- D. Umbilical cord compression
Correct Answer: C
Rationale: Late decelerations of the fetal heart rate are most commonly associated with uteroplacental insufficiency. During contractions, there is reduced blood flow to the placenta, leading to hypoxia and acidosis in the fetus, resulting in late decelerations. Head compression (A) typically causes early decelerations. Maternal hypothyroidism (B) does not directly affect fetal heart rate. Umbilical cord compression (D) can cause variable decelerations, not late decelerations. Therefore, the correct answer is C.
Which maternal condition always necessitates delivery by cesarean birth?
- A. Partial abruptio placentae
- B. Total placenta previa
- C. Ectopic pregnancy
- D. Eclampsia
Correct Answer: B
Rationale: The correct answer is B: Total placenta previa. In total placenta previa, the placenta completely covers the opening of the cervix, posing a risk of severe bleeding during vaginal delivery. Cesarean birth is necessary to prevent maternal hemorrhage and ensure a safe delivery.
Partial abruptio placentae (A) may require cesarean birth if there is significant bleeding or fetal distress, but it's not an absolute indication for cesarean section. Ectopic pregnancy (C) and eclampsia (D) do not always necessitate cesarean birth unless there are other obstetric indications.
Which laboratory finding is indicative of DIC?
- A. Decreased fibrinogen
- B. Increased platelets
- C. Increased hematocrit
- D. Decreased thromboplastin time
Correct Answer: A
Rationale: The correct answer is A: Decreased fibrinogen. In DIC, there is widespread activation of the coagulation cascade, leading to consumption of clotting factors like fibrinogen. This results in decreased levels of fibrinogen in the blood. Increased platelets (B) are seen in early stages, but they decrease as consumption continues. Increased hematocrit (C) is a nonspecific finding. Decreased thromboplastin time (D) is not indicative of DIC, as it would typically be prolonged due to consumption of clotting factors.
Fraternal twins are delivered by your Rh-negative patient. Twin A is Rh-positive and twin B is Rh-negative. Prior to administering Rho(D) immune globulin (RhoGAM), the nurse should determine the results of the
- A. direct Coombs test of twin A.
- B. direct Coombs test of twin B.
- C. indirect Coombs test of the mother.
- D. transcutaneous bilirubin level for both twins.
Correct Answer: C
Rationale: The correct answer is C, indirect Coombs test of the mother. This test is crucial to determine if the mother has developed antibodies against the Rh-positive blood of twin A. If the test is positive, it indicates sensitization has occurred, making RhoGAM necessary to prevent hemolytic disease in future pregnancies. Direct Coombs tests of the twins (choices A and B) are not relevant in this scenario as they assess for antibodies already attached to the red blood cells. Transcutaneous bilirubin levels (choice D) are used to monitor jaundice, not Rh incompatibility.