ATI RN
Cardiovascular System Exam
1. What type of stroke is caused by a blockage in an artery supplying blood to the brain?
- A. Ischemic stroke
- B. Hemorrhagic stroke
- C. Transient ischemic attack
- D. Embolism
Correct answer: A
Rationale: The correct answer is A: Ischemic stroke. Ischemic stroke occurs when a blood clot blocks an artery supplying blood to the brain, leading to brain damage. Choice B, Hemorrhagic stroke, is caused by bleeding in the brain, not a blockage. Choice C, Transient ischemic attack, is a temporary blockage of blood flow to the brain with symptoms similar to a stroke but typically lasting only a few minutes. Choice D, Embolism, refers to a blood clot or other particle that travels through the bloodstream and blocks a blood vessel.
2. A patient with severe peripheral vascular disease has developed signs of dry gangrene on the great toe of one foot. Which of the following pathophysiologic processes most likely contributed to this diagnosis?
- A. Inappropriate activation of apoptosis
- B. Bacterial invasion
- C. Impaired arterial blood supply
- D. Metaplastic cellular changes
Correct answer: C
Rationale: The correct answer is C: Impaired arterial blood supply. Dry gangrene is typically caused by impaired arterial blood supply, leading to tissue death without bacterial infection. Choices A, B, and D are incorrect. Inappropriate activation of apoptosis is not a common cause of dry gangrene. Bacterial invasion usually leads to wet gangrene, not dry gangrene. Metaplastic cellular changes are not directly associated with the development of dry gangrene.
3. Dr. Langley's work is devoted to understanding constancy and change throughout the lifespan. Dr. Langley's field of study is __________.
- A. genetics
- B. clinical psychology
- C. adolescent development
- D. developmental science
Correct answer: D
Rationale: Dr. Langley's work being focused on understanding constancy and change throughout the lifespan aligns with the field of developmental science, which studies how individuals grow and change from birth through old age. This field encompasses the study of physical, cognitive, social, emotional, and other aspects of development across the lifespan. Choice A, genetics, primarily focuses on the study of genes, heredity, and genetic variation, which is not directly related to understanding constancy and change throughout the lifespan. Choice B, clinical psychology, concentrates on the diagnosis and treatment of mental, emotional, and behavioral disorders rather than the broader study of development across the lifespan. Choice C, adolescent development, is more specific and limited in scope compared to the comprehensive study of development across the entire lifespan, which is the focus of developmental science.
4. A client is receiving warfarin for atrial fibrillation. Which of the following laboratory tests should the nurse expect to be ordered to monitor the effect of warfarin?
- A. Platelet count
- B. International normalized ratio (INR)
- C. Prothrombin time (PT)
- D. Partial thromboplastin time (PTT)
Correct answer: B
Rationale: The correct answer is B: International normalized ratio (INR). When a client is on warfarin therapy, the INR is monitored regularly to assess the anticoagulant effects of the medication. A therapeutic INR range for most indications is between 2.0 to 3.0. Choices A, C, and D are not typically used to monitor the effect of warfarin. Platelet count assesses the number of platelets in the blood, PT measures the clotting time of plasma, and PTT evaluates the intrinsic pathway of coagulation.
5. A middle adult client tells the nurse, 'I feel so useless now that my children do not need me anymore.' Which of the following responses should the nurse make?
- A. Validate the client's feelings by saying, 'People in middle adulthood often find satisfaction in nurturing and guiding young people.'
- B. Encourage the client to explore the reasons behind feeling useless.
- C. Reassure the client by saying, 'You should be proud that your children are becoming independent.'
- D. Provide information by saying, 'Most people are happy when their children grow up and leave home.'
Correct answer: A
Rationale: The correct response is to validate the client's feelings by acknowledging that individuals in middle adulthood often derive satisfaction from nurturing and guiding young people. This response shows empathy and understanding towards the client's emotions. Choice B is incorrect because it may come across as dismissive of the client's feelings. Choice C is incorrect as it does not address the client's emotional state and could be perceived as minimizing their concerns. Choice D is incorrect as it generalizes feelings and may not be applicable to the client's specific situation.
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