ATI RN
Cardiovascular System Practice Exam
1. What is a condition where the airways become inflamed and narrow, making breathing difficult?
- A. Asthma
- B. Bronchitis
- C. Pleurisy
- D. Tuberculosis
Correct answer: A
Rationale: Asthma is the correct answer. It is a condition characterized by inflammation, narrowing, and swelling of the airways, leading to symptoms like wheezing, shortness of breath, and coughing. Bronchitis is the inflammation of the bronchial tubes; Pleurisy is inflammation of the tissues that line the lungs and chest cavity; Tuberculosis is a bacterial infection that mainly affects the lungs.
2. A patient on mechanical ventilation experiences a sudden drop in oxygen saturation. What should the nurse check first?
- A. Check the ventilator tubing for disconnection.
- B. Increase the patient's oxygen flow.
- C. Perform a full physical assessment.
- D. Reassess the patient's oxygen levels after 5 minutes.
Correct answer: A
Rationale: The correct answer is to check the ventilator tubing for disconnection first when a patient on mechanical ventilation experiences a sudden drop in oxygen saturation. This is crucial because equipment malfunction, such as tubing disconnection, can lead to decreased oxygen delivery, resulting in a drop in oxygen saturation. Checking the tubing ensures that the ventilation system is functioning properly and that the patient is receiving the necessary oxygen. Option B is incorrect because increasing oxygen flow without checking for equipment issues may not address the root cause of the drop in saturation. Option C is not the priority in this situation as the immediate focus should be on assessing and ensuring the functioning of the ventilation equipment. Option D delays addressing the potential equipment malfunction, which could worsen the patient's condition if not promptly resolved.
3. What reflex protects an infant from strong stimulation?
- A. Moro
- B. eye-blink
- C. sucking
- D. palmar grasp
Correct answer: B
Rationale: The correct answer is B: eye-blink. The eye-blink reflex is the one that protects an infant from strong stimulation by causing them to quickly shut their eyes in response to sudden bright light or a loud noise. This reflex helps to safeguard the infant's sensitive eyes from potential harm. The Moro reflex (choice A) is the startle reflex, the sucking reflex (choice C) helps with feeding, and the palmar grasp reflex (choice D) is when the infant's fingers close around an object placed in their hand; none of these reflexes specifically protect the infant from strong stimulation.
4. A patient with schizophrenia is experiencing hallucinations. Which intervention is most appropriate?
- A. Encourage the patient to ignore the voices.
- B. Engage the patient in a reality-based activity.
- C. Provide a quiet environment to reduce stimulation.
- D. Ask the patient to describe the hallucinations in detail.
Correct answer: B
Rationale: Engaging the patient in a reality-based activity is the most appropriate intervention for a patient with schizophrenia experiencing hallucinations. This intervention can help distract the patient from the hallucinations and reorient them to the present, promoting a connection with reality and potentially reducing distress associated with the hallucinations. Choice A, encouraging the patient to ignore the voices, may not be effective as it can be challenging for the patient to dismiss the hallucinations. Choice C, providing a quiet environment, is helpful but may not directly address the hallucinations. Choice D, asking the patient to describe the hallucinations in detail, may increase the patient's focus on the hallucinations, potentially worsening distress.
5. Which enzyme initiates protein digestion in the stomach?
- A. Pepsin
- B. Salivary Amylase
- C. CCK
- D. Secretin
Correct answer: A
Rationale: Pepsin is the enzyme that initiates protein digestion in the stomach. It breaks down proteins into smaller peptides, aiding in their further digestion and absorption in the intestines. Salivary Amylase (Choice B) functions in breaking down dietary carbohydrates in the mouth, not proteins. CCK (Choice C) and Secretin (Choice D) are hormones involved in the digestion of fats and carbohydrates, not proteins. Therefore, Choices B, C, and D are incorrect in the context of protein digestion in the stomach.
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