ATI LPN
Questions on the Immune System Questions
Question 1 of 5
Which of the following statements are correct?
Correct Answer: B
Rationale: The correct answer is B because macrophages do indeed derive from monocytes. Monocytes are circulating white blood cells that migrate into tissues and differentiate into macrophages. This process is well-documented in immunology. A: Macrophages are not granulocytes. Granulocytes are a different type of white blood cell characterized by the presence of granules in their cytoplasm. C: Macrophages are highly phagocytic cells, meaning they can engulf and digest foreign particles. Therefore, this statement is incorrect. D: Macrophages primarily reside in the tissues as part of the immune defense system, making this statement incorrect.
Question 2 of 5
Which manifestation of anemia occurs with severe anemia?
Correct Answer: C
Rationale: The correct answer is C: Sensitivity to cold. Severe anemia can lead to decreased red blood cells, causing poor circulation and reduced oxygen delivery to tissues. This leads to feeling cold due to decreased metabolic activity. Heart palpitations (A) are common but not specific to severe anemia. Fatigue (B) is a common symptom in anemia but not exclusive to severe cases. Exertional dyspnea (D) is due to reduced oxygen-carrying capacity but is not specific to severe anemia.
Question 3 of 5
Which blood cell test is associated with risk of spontaneous hemorrhage if its counts fall below 10 x 10^9 /L?
Correct Answer: A
Rationale: Platelet count is the correct answer. Platelets are responsible for blood clotting, and a count below 10 x 10^9 /L can lead to spontaneous hemorrhage due to impaired clot formation. Hemoglobin, WBC, and RBC indices are not directly related to clotting function and do not pose the same risk of spontaneous hemorrhage.
Question 4 of 5
A nurse is providing teaching about lifestyle changes to a client who had a myocardial infarction and has a new prescription for a beta blocker. Which of the following client statements indicates an understanding of the teaching?
Correct Answer: A
Rationale: The correct answer is A because counting the radial pulse rate before taking the beta blocker is important to monitor for bradycardia, a potential side effect. This demonstrates understanding of the medication's effect. Option B is incorrect as increasing salt intake is contraindicated in heart conditions. Option C is incorrect as vigorous exercise is not recommended post-myocardial infarction. Option D is incorrect as stopping medication abruptly can be dangerous and is not recommended without medical advice.
Question 5 of 5
A nurse is caring for a client who has hemophilia. The client reports pain and swelling in a joint following an injury. Which of the following actions should the nurse take?
Correct Answer: A
Rationale: Correct Answer: A Rationale: 1. Hemophilia is a bleeding disorder due to missing clotting factors. 2. Pain and swelling in a joint indicate internal bleeding. 3. Replacement of the missing clotting factor is crucial to stop bleeding. 4. Administering aspirin can worsen bleeding due to its antiplatelet effects. 5. Applying heat can increase bleeding by dilating blood vessels. 6. Elevating the joint alone may not address the underlying bleeding issue.