ATI LPN
Hematologic System Assessment Questions Questions
Question 1 of 5
What is the most important test for iron stores?
Correct Answer: B
Rationale: The most important test for iron stores is serum ferritin. Ferritin is a protein that stores iron in the body, and its levels directly reflect the amount of iron stored. Therefore, measuring serum ferritin provides the most accurate assessment of iron stores. Serum calcium (choice A) is not a reliable indicator of iron stores. Serum iron (choice C) can fluctuate based on various factors and does not provide a comprehensive picture of iron stores. Choosing "None of the above" (choice D) would be incorrect as serum ferritin is indeed the most important test for iron stores.
Question 2 of 5
A child is diagnosed with sickle cell disease. The parents are unsure of how their child contracted the disease. What is the most appropriate explanation by the nurse?
Correct Answer: D
Rationale: Rationale: 1. Sickle cell disease is an autosomal recessive genetic disorder. 2. Both parents must be carriers (have the trait) to pass on the disease. 3. If both parents have the trait, each child has a 25% chance of inheriting the disease. 4. Therefore, choice D is correct as it explains the genetic basis of sickle cell disease transmission. Summary of Incorrect Choices: A. Incorrect - Both parents need to be carriers for the child to inherit the disease. B. Incorrect - Both parents need to be carriers for the child to inherit the disease. C. Incorrect - If the mother has the disease, the child would have a 50% chance of inheriting it, not 25%.
Question 3 of 5
A child with acute lymphoblastic leukemia (ALL) who is receiving chemotherapy has the following lab results: WBC 9,000, Hemoglobin 12, and Platelets 20,000. When planning this child’s care, which risk should the nurse consider most significant?
Correct Answer: C
Rationale: Correct Answer: C - Hemorrhage Rationale: 1. Platelets are critically low at 20,000, putting the child at high risk for bleeding. 2. Hemorrhage is a major concern due to impaired clotting ability. 3. Anemia (low hemoglobin) can contribute to bleeding but is not the primary concern. 4. Infection risk is elevated but not as immediate as the risk of hemorrhage with such low platelets.
Question 4 of 5
You are the nurse in charge on a pediatric unit. A child with sickle cell disease, in splenic sequestration crisis, is being admitted. You should assign this child to a
Correct Answer: D
Rationale: Correct Answer: D - Private room Rationale: 1. In splenic sequestration crisis, there is a risk of sudden severe anemia and hypovolemic shock. 2. Isolation is not necessary as it's not a contagious condition. 3. A private room allows close monitoring, privacy, and individualized care. 4. A semiprivate room (A) may lead to exposure to infections. 5. Reverse-isolation (B) is for immunocompromised patients. 6. Contact-isolation (C) is for contagious diseases, not applicable here.
Question 5 of 5
The nurse has identified Ineffective Tissue Perfusion as a nursing diagnosis for a client with disseminated intravascular coagulation (DIC). What intervention would be appropriate for the client?
Correct Answer: C
Rationale: The correct answer is C: Monitoring oxygen saturation. In DIC, there is impaired blood flow leading to inadequate perfusion of tissues. Monitoring oxygen saturation is crucial to assess tissue perfusion and ensure adequate oxygen delivery. This intervention directly addresses the underlying problem of ineffective tissue perfusion by evaluating the effectiveness of oxygenation. Repositioning the client every 2 hours (choice A) may help prevent pressure ulcers but does not directly address tissue perfusion. Administering oxygen (choice B) and encouraging deep breathing and coughing (choice D) may be beneficial but do not specifically target monitoring the client's oxygen saturation to evaluate tissue perfusion.