ATI RN
Pathophysiology Practice Exam
1. When a healthcare professional is reviewing lab results and notices that the erythrocytes contain an abnormally low concentration of hemoglobin, the healthcare professional calls these erythrocytes:
- A. Hyperchromic
- B. Hypochromic
- C. Macrocytic
- D. Microcytic
Correct answer: B
Rationale: Erythrocytes with an abnormally low concentration of hemoglobin are called hypochromic. Hyperchromic refers to erythrocytes with an abnormally high concentration of hemoglobin. Macrocytic indicates larger than normal red blood cells, while microcytic refers to smaller than normal red blood cells. Therefore, in this scenario, the correct term is hypochromic.
2. What signs and symptoms most likely prompted this patient to initially seek care?
- A. Malaise and fatigue
- B. Severe diarrhea
- C. Intermittent fever
- D. Dizziness and confusion
Correct answer: B
Rationale: The correct answer is B: Severe diarrhea. A patient who has recently returned from a trip to Nepal with a nongovernmental organization and is seeking care for amebiasis would most likely have been prompted by the symptom of severe diarrhea. Amebiasis is an infection caused by the parasite Entamoeba histolytica, commonly transmitted through contaminated food or water sources in developing countries like Nepal. The hallmark symptom of amebiasis is dysentery, which is characterized by severe diarrhea with blood or mucus in the stool. Malaise and fatigue (choice A) are nonspecific symptoms that may accompany many illnesses and are not specific to amebiasis. Intermittent fever (choice C) is not a typical presenting symptom of amebiasis, which primarily manifests with gastrointestinal symptoms. Dizziness and confusion (choice D) are also not typical symptoms associated with amebiasis.
3. An infant is being administered an immunization. Which of the following provides an accurate description of an immunization?
- A. It should be administered to a pregnant woman prior to the infant's birth.
- B. It is the administration of an antigen to stimulate an antibody response.
- C. It produces many adverse reactions, particularly autism, in the infant.
- D. It protects the infant from exposure to infectious antibodies.
Correct answer: B
Rationale: The correct answer is B. Immunization involves administering an antigen, such as a weakened or killed microorganism, to stimulate the immune system to produce an antibody response. This process helps the body recognize and remember specific pathogens, providing immunity against future infections. Choice A is incorrect because immunizations are administered to the infant directly, not to the pregnant woman before birth. Choice C is incorrect as there is no scientific evidence linking immunizations to autism. Choice D is incorrect as immunizations protect against infectious agents, not antibodies.
4. A healthcare provider is explaining to a patient the difference between primary and secondary immunodeficiency disorders and explains that secondary immunodeficiencies (select ONE that does not apply):
- A. May develop after viral infections
- B. Develop before birth
- C. May develop following immunosuppressive therapies
- D. Are caused by superimposed conditions
Correct answer: B
Rationale: The correct statements about secondary immunodeficiencies are that they may develop after viral infections, following immunosuppressive therapies, and are caused by superimposed conditions. Choice B ('Develop before birth') is incorrect because secondary immunodeficiencies do not develop before birth. They are acquired later in life. Therefore, the correct answers are A, C, and D.
5. A patient has been using Viagra on an intermittent basis for several years. However, he has cited delays in the onset and peak of action as the occasional source of frustration. What PDE5 inhibitor may be of particular benefit to this patient's needs?
- A. Avanafil (Stendra)
- B. Tadalafil (Cialis)
- C. Vardenafil (Levitra)
- D. Alprostadil (Caverject)
Correct answer: A
Rationale: The correct answer is Avanafil (Stendra). Avanafil has a rapid onset of action compared to other PDE5 inhibitors, making it suitable for patients experiencing delays in onset and peak of action with other medications like Viagra. Tadalafil (Cialis), Vardenafil (Levitra), and Alprostadil (Caverject) do not offer the same rapid onset of action as Avanafil, making them less suitable for addressing the specific needs of this patient.
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