ATI RN
ATI Pathophysiology Exam 2
1. Which of the following is an example of a Type 1 hypersensitivity reaction?
- A. Anaphylaxis
- B. Indigestion
- C. Beta cell destruction
- D. ABO transfusion reaction
Correct answer: A
Rationale: Anaphylaxis is a classic example of a Type 1 hypersensitivity reaction. In Type 1 hypersensitivity, allergens trigger an immediate immune response mediated by IgE antibodies, leading to the release of histamine and other mediators. This reaction can result in symptoms ranging from mild itching and hives to severe conditions like anaphylaxis, which is a life-threatening emergency. The other options, such as indigestion (choice B), beta cell destruction (choice C), and ABO transfusion reaction (choice D), are not classified as Type 1 hypersensitivity reactions. Indigestion is typically related to gastrointestinal disturbances, beta cell destruction is associated with autoimmune conditions like type 1 diabetes, and ABO transfusion reaction involves antibodies targeting incompatible blood groups, which is a different immune mechanism compared to Type 1 hypersensitivity.
2. Which of the following processes is most important for the continuation of the human species?
- A. Responsiveness
- B. Movement
- C. Reproduction
- D. Respiration
Correct answer: Reproduction
Rationale: Reproduction is the most important process for the continuation of the human species as it involves the creation of new individuals. Without reproduction, the human species would cease to exist. Responsiveness and movement are essential for individual survival and functioning but do not directly impact the continuation of the species. Respiration is crucial for obtaining energy but is not directly linked to the continuation of the species.
3. Which is a correct evaluation of the new psychiatric nurse's statement regarding a client's use of defense mechanisms?
- A. Defense mechanisms can be self-protective responses to stress and need not be eliminated.
- B. Defense mechanisms are a maladaptive attempt by the ego to manage anxiety and should always be eliminated.
- C. Defense mechanisms, used by individuals with weak ego integrity, should be discouraged but not eliminated.
- D. Defense mechanisms cause disintegration of the ego and should be fostered and encouraged.
Correct answer: A
Rationale: The correct evaluation is that defense mechanisms can be self-protective responses to stress and do not necessarily need to be eliminated. These mechanisms serve the purpose of reducing anxiety during times of stress. While some defense mechanisms may be maladaptive, they can also help individuals cope with challenging situations. It is essential for the nurse to recognize that addressing defense mechanisms should be done sensitively, as they may be crucial for the client's emotional regulation. Encouraging the development of healthy coping skills while acknowledging the role of defense mechanisms in managing stress is a balanced approach in psychiatric care. Choice B is incorrect because completely eliminating defense mechanisms is not always feasible or beneficial. Choice C is incorrect as it oversimplifies the relationship between defense mechanisms and ego integrity. Choice D is incorrect as it misrepresents the role of defense mechanisms in ego functions.
4. A client who is 48 hours postoperative following abdominal surgery is being assessed by a nurse. Which of the following findings should the nurse report to the provider?
- A. Heart rate of 80/min
- B. Sanguineous drainage on the surgical dressing
- C. Temperature of 37.5°C (99.5°F)
- D. Serous drainage on the surgical dressing
Correct answer: B
Rationale: Sanguineous drainage from the surgical site 48 hours after surgery could indicate a complication such as hemorrhage or infection and should be reported. Sanguineous drainage is typically seen in the early postoperative period due to the presence of blood. Serous drainage, on the other hand, is normal in the later stages of wound healing. A heart rate of 80/min is within the normal range for an adult. A temperature of 37.5°C (99.5°F) is slightly elevated but not a concerning finding in the absence of other symptoms.
5. Which heart chamber ejects blood into the systemic arterial circulation via the aorta?
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
Correct answer: D
Rationale: The correct answer is D, Left ventricle. The left ventricle pumps oxygenated blood into the systemic circulation via the aorta. This chamber receives oxygen-rich blood from the left atrium and contracts forcefully to propel blood into the aorta, distributing it to the body. The other options, right atrium, left atrium, and right ventricle, do not directly eject blood into the systemic arterial circulation via the aorta. The right atrium receives deoxygenated blood from the body, the left atrium receives oxygenated blood from the lungs, and the right ventricle pumps blood to the lungs for oxygenation.
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