ATI RN
Cardiovascular System Practice Exam
1. What is a condition where the heart muscle becomes abnormally enlarged, thickened, or stiffened, often leading to heart failure?
- A. Cardiomyopathy
- B. Pericarditis
- C. Aortic stenosis
- D. Mitral valve prolapse
Correct answer: A
Rationale: Cardiomyopathy is the correct answer. It is a condition characterized by the abnormal enlargement, thickening, or stiffening of the heart muscle, which can lead to heart failure. Pericarditis (choice B) is inflammation of the pericardium, the sac surrounding the heart, not directly related to heart muscle enlargement. Aortic stenosis (choice C) is the narrowing of the aortic valve opening, affecting blood flow from the heart, but not directly related to heart muscle enlargement. Mitral valve prolapse (choice D) is a condition where the valve between the left atrium and left ventricle doesn't close properly, causing blood to leak backward, and is not directly related to heart muscle enlargement.
2. How does the pain of a myocardial infarction (MI) differ from stable angina? (SATA)
- A. Accompanied by shortness of breath
- B. Feelings of fear or anxiety
- C. Lasts longer than 15 minutes
- D. Relieved by taking nitroglycerin
Correct answer: A, C
Rationale: The pain of an MI is often accompanied by shortness of breath and feelings of fear or anxiety. It typically lasts longer than 15 minutes and is not relieved by nitroglycerin. Unlike stable angina, the pain of an MI occurs without a known cause such as exertion.
3. What are direct effects of antibodies? (Select all that apply):
- A. Neutralization
- B. Agglutination
- C. Precipitation
- D. Phagocytosis
Correct answer: A, B, C
Rationale: The direct effects of antibodies include neutralization, agglutination, and precipitation. Antibodies neutralize pathogens by binding to them and preventing their harmful effects. Agglutination involves the clumping together of pathogens, making it easier for phagocytes to engulf them. Precipitation refers to the process where antibodies bind to soluble antigens, forming large complexes that are easily removed from the body. Phagocytosis, on the other hand, is an indirect effect of antibodies where phagocytes engulf and destroy pathogens opsonized by antibodies, not a direct effect.
4. The healthcare provider is preparing to provide medication instruction for a patient. Which of the following understandings about anxiety will be essential to effective instruction?
- A. Learning is best when anxiety is moderate to severe.
- B. Learning is enhanced when anxiety is mild.
- C. Panic-level anxiety helps the provider teach better.
- D. Severe anxiety is characterized by intense concentration and enhances the attention span.
Correct answer: B
Rationale: Mild anxiety sharpens the senses, increases the perceptual field, and results in heightened awareness of the environment, which enhances learning. As anxiety increases, attention span decreases, making learning more difficult. Therefore, mild anxiety is more conducive to effective instruction compared to moderate to severe anxiety, panic-level anxiety, or severe anxiety. Choice A is incorrect because moderate to severe anxiety impairs learning. Choice C is incorrect as panic-level anxiety can be overwhelming and hinder the learning process. Choice D is incorrect because severe anxiety typically leads to impaired attention span rather than enhancing it.
5. A healthcare professional is receiving a change-of-shift report for an adult female client who is postoperative. Which client information should the healthcare professional report?
- A. Low-grade fever.
- B. Shortness of breath.
- C. Decreased urine output.
- D. High platelet count.
Correct answer: A
Rationale: In a postoperative client, a low-grade fever can be an early sign of infection, which is crucial to report to the healthcare team for timely intervention. Shortness of breath and decreased urine output are also important to monitor, but in the context of postoperative care, infection is a more immediate concern. A high platelet count is not typically a priority in the immediate postoperative period.
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