ATI RN
Cardiovascular System Practice Exam
1. Which type of medication helps to lower cholesterol levels in the blood?
- A. Statins
- B. Beta-blockers
- C. ACE inhibitors
- D. Diuretics
Correct answer: A
Rationale: Statins are a type of medication specifically designed to lower cholesterol levels in the blood by inhibiting an enzyme involved in cholesterol production. Beta-blockers are mainly used to treat conditions like high blood pressure and heart problems by reducing the heart rate and workload. ACE inhibitors are used to manage conditions like high blood pressure and heart failure by relaxing blood vessels. Diuretics are medications that help the body get rid of excess salt and water by increasing urine production. Therefore, in the context of lowering cholesterol levels, statins are the most appropriate choice.
2. A nurse is assessing a client who has a sodium level of 122 mEq/L. Which of the following findings should the nurse expect?
- A. Decreased deep tendon reflexes
- B. Positive Chvostek's sign
- C. Hyperactive bowel sounds
- D. Dry mucous membranes
Correct answer: A
Rationale: Corrected deep tendon reflexes occur with hyponatremia. Other manifestations of hyponatremia include headache, confusion, lethargy, fatigue, seizures, and muscle weakness. Positive Chvostek's sign is associated with hypocalcemia, hyperactive bowel sounds are not typically related to hyponatremia, and dry mucous membranes are more commonly seen with dehydration.
3. When is sterile technique used?
- A. During strict isolation procedures
- B. After terminal disinfection is performed
- C. For invasive procedures
- D. When protective isolation is necessary
Correct answer: C
Rationale: Sterile technique is utilized during invasive procedures to prevent the introduction of pathogens, minimizing the risk of infections. This strict approach ensures that the procedure is performed in a sterile environment, reducing the chances of contamination and subsequent complications.
4. Lippitt's phases of change are important factors in the change process. The phase that involves key people in data collection is known as:
- A. Assess the motivation.
- B. Choose a change agent.
- C. Diagnose the problem.
- D. Maintain the change.
Correct answer: C
Rationale: The correct answer is C: 'Diagnose the problem.' In Lippitt's phases of change, the first step is to diagnose the problem, which involves key people in data collection and problem-solving. This step is crucial as it helps identify the root causes of the issues that need to be addressed. Assessing the motivation (A) comes later in the change process once the problem has been diagnosed. Choosing a change agent (B) and maintaining the change (D) are also important steps in the change process but do not specifically involve key people in data collection as in the diagnosis phase.
5. Which of the following scenarios would be an example of shared governance on a nursing unit?
- A. Staff nurses delegate activities to CNAs.
- B. Procedure manuals are written by a committee of nurse managers.
- C. Staff nurses and CNAs make their own schedules.
- D. A unit manager seeks advice from her supervisor.
Correct answer: C
Rationale: The correct answer is C. Shared governance in a nursing unit involves staff nurses and CNAs having autonomy and decision-making power in aspects like scheduling, which is reflected in them making their own schedules. This scenario aligns with the philosophy of shared governance where nursing practice is best determined by nurses. Choices A, B, and D do not exemplify shared governance as they involve hierarchical delegation, managerial decision-making, and seeking advice from superiors rather than autonomous decision-making by frontline staff.
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