ATI RN
Cardiovascular System Exam
1. What is a condition where the heart's electrical system malfunctions, leading to an irregular heartbeat or arrhythmia?
- A. Arrhythmia
- B. Bradycardia
- C. Tachycardia
- D. Ventricular fibrillation
Correct answer: A
Rationale: The correct answer is A, Arrhythmia. Arrhythmia refers to an irregular heartbeat caused by the malfunction of the heart's electrical system. Bradycardia (choice B) is a condition characterized by a slow heart rate, while Tachycardia (choice C) is a condition characterized by a fast heart rate. Ventricular fibrillation (choice D) is a life-threatening arrhythmia where the heart's lower chambers quiver erratically.
2. According to cognitive-developmental theory, a scheme is __________.
- A. an internal process that occurs apart from any contact with the environment
- B. the understanding that objects continue to exist when out of sight
- C. the ability to copy the behavior of others
- D. an organized way of making sense of experience
Correct answer: D
Rationale: In cognitive-developmental theory, a scheme is an organized way of making sense of experience. This term refers to mental structures or frameworks that help individuals interpret and understand the world around them. Choice A is incorrect because schemes are developed through interaction with the environment. Choice B refers to object permanence, a concept from Piaget's theory of cognitive development, not schemes. Choice C describes observational learning, which is different from the concept of schemes in cognitive development.
3. What condition is often associated with severe diarrhea?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory acidosis
- D. Respiratory alkalosis
Correct answer: A
Rationale: Severe diarrhea can lead to a loss of bicarbonate, resulting in metabolic acidosis. This is a common complication of prolonged or severe diarrhea, especially in children.
4. The nurse is caring for a client on warfarin with an INR of 5.2. What is the most appropriate action?
- A. Administer vitamin K as an antidote.
- B. Hold the next dose of warfarin.
- C. Increase the dose of warfarin.
- D. Monitor the client’s INR closely.
Correct answer: A
Rationale: An INR of 5.2 is elevated, indicating an increased risk of bleeding. Administering vitamin K can help reverse the effects of warfarin, which is the most appropriate action in this situation. Holding the next dose of warfarin is not enough to address the high INR, and increasing the dose would further elevate the INR level. Monitoring the INR closely is important, but in this case, immediate action is needed to counteract the anticoagulant effects of warfarin.
5. Professionalism has historically been difficult to define. Early definitions of professionalism included which of the following characteristics?
- A. Expertise
- B. Empathy
- C. Ethical and moral values
- D. Honesty
Correct answer: A
Rationale: The correct answer is A: 'Expertise.' Historically, professionalism was defined by one's knowledge and expertise in a particular field. Choices B, C, and D are incorrect because early definitions of professionalism did not focus on qualities like empathy, ethical and moral values, or honesty, but rather on the individual's level of skill and competence in their area of work.
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