ATI RN
Cardiovascular System Practice Exam
1. Which term refers to the contraction phase of the heart when blood is ejected from the chambers?
- A. Systole
- B. Diastole
- C. Contractility
- D. Afterload
Correct answer: A
Rationale: The correct answer is A, systole. Systole is the phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. During diastole (choice B), the heart relaxes and fills with blood, contrasting with systole. Contractility (choice C) refers to the ability of the heart to contract effectively. Afterload (choice D) is the pressure the heart must work against to eject blood during systole.
2. According to psychosexual theory, what is crucial for healthy personality development?
- A. Children actively construct knowledge as they manipulate and explore the world.
- B. Directly observable events are the appropriate focus of psychological study.
- C. How parents manage their child's sexual and aggressive drives in the first few years.
- D. The ego makes a positive contribution to development, acquiring attitudes and skills.
Correct answer: C
Rationale: According to psychosexual theory, developed by Sigmund Freud, how parents manage their child's sexual and aggressive drives in the first few years is crucial for healthy personality development. This theory suggests that personality development is heavily influenced by a child's experiences during early stages of development, particularly related to handling sexual and aggressive impulses. Choices A, B, and D are incorrect as they do not align with the core principles of psychosexual theory, which focuses on the importance of early childhood experiences, especially in the context of sexual and aggressive drives.
3. A nurse is reviewing the laboratory values of a client who is receiving heparin therapy for deep-vein thrombosis. Which of the following values should the nurse report to the provider?
- A. INR 2.0
- B. Platelet count 150,000/mm3
- C. aPTT 60 seconds
- D. WBC count 8,000/mm3
Correct answer: C
Rationale: The correct answer is C: aPTT 60 seconds. An aPTT of 60 seconds is above the therapeutic range for clients on heparin therapy and indicates a risk of bleeding, so it should be reported to the provider. INR of 2.0 is within the therapeutic range for clients on heparin therapy, so it does not require immediate reporting. Platelet count of 150,000/mm3 and WBC count of 8,000/mm3 are within normal ranges and not directly related to heparin therapy, so they do not need to be reported in this context.
4. A healthcare provider is assessing a client who has been diagnosed with conversion disorder. Which of the following findings should the provider expect?
- A. Paralysis of a limb
- B. Auditory hallucinations
- C. Dissociative amnesia
- D. Compulsive behaviors
Correct answer: A
Rationale: Conversion disorder is characterized by the development of neurological symptoms, such as paralysis of a limb, that cannot be explained by medical evaluation. The paralysis is typically due to a psychological conflict or stress rather than a physical issue. Auditory hallucinations, dissociative amnesia, and compulsive behaviors are not commonly associated with conversion disorder, making them incorrect choices. Therefore, the healthcare provider should expect to find paralysis of a limb in a client with conversion disorder.
5. Which intervention is most appropriate for a patient with a phobia of flying?
- A. Exposure therapy
- B. Cognitive restructuring
- C. Medication management
- D. Psychoeducation
Correct answer: A
Rationale: Exposure therapy is considered the most appropriate intervention for a patient with a phobia of flying. This therapeutic approach involves gradually exposing the individual to the feared stimulus, in this case, flying, in a controlled and supportive environment. By facing the fear in a structured manner, the patient can learn to manage their anxiety response and eventually reduce their phobia-related symptoms. While cognitive restructuring may help change negative thought patterns and medication management can alleviate symptoms, exposure therapy is specifically designed to address phobias through systematic desensitization, making it the most suitable intervention in this scenario. Psychoeducation aims to provide information and support but may not directly target the phobia itself.
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