the smallest of the white blood cells which also can be involved in humoral immunity is the
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NCLEX-RN

Exam Cram NCLEX RN Practice Questions

1. Which of the following white blood cells is the smallest and can be involved in humoral immunity?

Correct answer: A

Rationale: The correct answer is 'Lymphocyte.' Lymphocytes are the smallest type of white blood cells and play a crucial role in humoral immunity by producing antibodies. Monocytes are actually the largest white blood cells and are involved in phagocytosis rather than humoral immunity. Basophils are a type of granulocyte involved in allergic reactions, and erythrocytes are red blood cells responsible for oxygen transport, not part of the immune system.

2. A client with a new prescription for lithium carbonate for bipolar disorder is being educated by a nurse on early indications of toxicity. The nurse should include which of the following manifestations in the teachings?

Correct answer: B

Rationale: Polyuria is a crucial early indication of lithium toxicity. It results from the drug's effect on the kidneys, leading to increased urine output. This is a significant symptom to monitor as it can indicate potential toxicity. Constipation, rash, and tinnitus are not typically associated with early indications of lithium toxicity. Constipation is more commonly seen as a side effect of some medications, while rash and tinnitus are not specific indicators of lithium toxicity.

3. While caring for a client in labor, a nurse attaches an electronic fetal monitor to the client's abdomen to assess the baby's heart rate. The nurse observes that the baby's heart rate slows down during each contraction and does not return to normal limits until after the contraction is complete. What type of fetal heart rate change does this pattern describe?

Correct answer: B

Rationale: Late decelerations are characterized by the baby's heart rate declining in utero during contractions. The heart rate drops below baseline and stays low until after the contraction ends. Late decelerations are concerning as they indicate uteroplacental insufficiency, which can compromise fetal oxygenation. This pattern is a non-reassuring sign and requires immediate intervention. Variable decelerations are typically abrupt decreases in heart rate, often associated with cord compression. Early decelerations, on the other hand, mirror the contractions and are considered benign, resulting from fetal head compression. Accelerations are reassuring signs of fetal well-being, indicating a responsive and healthy fetal nervous system.

4. A woman has died as a result of a motor vehicle accident. She is listed as an organ donor, and her family is considering whether to comply with her wishes. Which of the following is true?

Correct answer: D

Rationale: In cases where a deceased person is listed as an organ donor, the family may have the final say on whether to proceed with organ donation, even if the individual had expressed their wish to donate. Physicians may prioritize the emotional well-being of the family over the wishes of the deceased, especially if organ donation could cause additional distress or trauma to the grieving family members. Therefore, it is possible for physicians to respect the family's decision not to proceed with organ donation, even if the deceased had previously expressed the desire to donate. This decision-making process underscores the importance of considering and respecting the perspectives and emotions of both the deceased individual and their surviving family members in organ donation scenarios.

5. Select the age group that is coupled with an infectious disease that is most common in this age group.

Correct answer: C

Rationale: Young adults and teenagers are at the highest risk for sexually transmitted diseases due to their sexual activity. High bilirubin is a laboratory finding related to jaundice and not an infectious disease. Shingles is more common in the elderly population, not in pre-school and school-age children. Malaria is not most common in the elderly; it is prevalent in regions with specific mosquito vectors. Therefore, the correct answer is that young adults and teenagers are most commonly associated with sexually transmitted diseases.

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