ATI RN
Cardiovascular System Practice Exam
1. During which process does coronary artery blood flow to the myocardium occur during diastole, when coronary vascular resistance is reduced?
- A. Coronary perfusion pressure
- B. Coronary vascular resistance
- C. Diastolic filling
- D. Ventricular ejection
Correct answer: A
Rationale: The correct answer is A: Coronary perfusion pressure. Coronary perfusion pressure refers to the process of coronary artery blood flow to the myocardium during diastole when coronary vascular resistance is reduced. This process ensures that the myocardium receives sufficient oxygen and nutrients for proper functioning. Choice B, Coronary vascular resistance, is the opposite of what is described in the question. During coronary perfusion, resistance is reduced to enhance blood flow. Choices C and D, Diastolic filling and Ventricular ejection, do not directly relate to the process of coronary artery blood flow during diastole.
2. After auscultating a client's breath sounds, the nurse is providing care. Which finding is correctly matched to the nurse's primary intervention?
- A. Hollow sounds are heard over the trachea. The nurse increases the oxygen flow rate.
- B. Crackles are heard in bases. The nurse encourages the client to cough forcefully.
- C. Wheezes are heard in central areas. The nurse administers an inhaled bronchodilator.
- D. Vesicular sounds are heard over the periphery. The nurse has the client breathe deeply.
Correct answer: C
Rationale: Wheezes are indicative of narrowed airways, and bronchodilators help to open the air passages, making option C the correct match. Wheezes are typically heard in the central or peripheral lung areas and are associated with conditions like asthma or COPD. Inhaled bronchodilators work by dilating the bronchioles, which helps alleviate wheezing and improve airflow. Therefore, administering an inhaled bronchodilator is the appropriate intervention in response to wheezes.
3. A nurse is providing discharge teaching to a client who is postoperative following a total hip arthroplasty. Which of the following instructions should the nurse include?
- A. Cross your legs when sitting to increase circulation.
- B. Bend at the waist when picking up objects.
- C. Avoid crossing your legs when sitting.
- D. Avoid using a raised toilet seat.
Correct answer: C
Rationale: The correct answer is C: 'Avoid crossing your legs when sitting.' After a total hip arthroplasty, it is important for clients to avoid crossing their legs to prevent complications such as dislocation. Crossing the legs can put strain on the new hip joint, increasing the risk of dislocation. Choice A is incorrect as crossing legs can be harmful. Choice B is incorrect as bending at the waist can strain the hip joint, leading to complications. Choice D is incorrect as using a raised toilet seat is recommended after hip surgery to prevent excessive bending at the hip joint.
4. During a manic episode in bipolar disorder, which intervention is most appropriate for a patient?
- A. Encourage the patient to engage in group activities.
- B. Provide a structured and low-stimulus environment.
- C. Allow the patient to set their schedule.
- D. Engage the patient in high-energy physical activities.
Correct answer: B
Rationale: During a manic episode in bipolar disorder, individuals may experience heightened energy levels, impulsivity, and decreased need for sleep. Providing a structured and low-stimulus environment is crucial in managing manic episodes. This intervention helps reduce overstimulation and provides a calm and predictable setting, which can be beneficial in helping the patient regain control and stability. Group activities and high-energy physical activities may exacerbate the symptoms of mania by increasing stimulation and excitement. Allowing the patient to set their schedule may not provide the necessary structure needed during a manic episode, hence making it less appropriate.
5. A nurse is preparing to mix NPH and regular insulin in the same syringe. Which of the following actions should the nurse take?
- A. Inject air into the NPH insulin vial.
- B. Withdraw the prescribed dose of regular insulin.
- C. Withdraw the prescribed dose of NPH insulin.
- D. Mix the two insulins in separate syringes.
Correct answer: A
Rationale: When mixing NPH and regular insulin in the same syringe, the nurse should first inject air into the NPH insulin vial. This action prevents contamination by allowing an easier withdrawal of the correct dose of NPH insulin after withdrawing the regular insulin. Withdrawing the prescribed dose of regular insulin (Choice B) is incorrect as it does not address the initial step of injecting air into the NPH vial. Similarly, withdrawing the prescribed dose of NPH insulin (Choice C) is incorrect as it skips the crucial first step. Mixing the two insulins in separate syringes (Choice D) is not ideal since combining them in one syringe is a common practice to reduce the number of injections for the patient.
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