HESI RN
HESI Fundamentals Practice Exam
1. After surgery, a patient has decreased cardiac output. What is a likely observation by the nurse?
- A. Decreased urine output
- B. Increased urine output
- C. Flushing of the skin
- D. Hyperventilation
Correct answer: A
Rationale: A decrease in cardiac output can lead to decreased blood flow to the kidneys, resulting in decreased urine output. The kidneys rely on adequate blood supply to filter waste and produce urine. Therefore, a decreased urine output is a common observation when cardiac output is reduced. Choices B, C, and D are incorrect. Increased urine output is not typically associated with decreased cardiac output; flushing of the skin is more related to vasodilation, and hyperventilation is not directly linked to decreased cardiac output.
2. The nurse observes an unlicensed assistive personnel (UAP) taking a client's blood pressure with a cuff that is too small, but the blood pressure reading obtained is within the client's usual range. What action is most important for the nurse to implement?
- A. Tell the UAP to use a larger cuff at the next scheduled assessment.
- B. Reassess the client's blood pressure using a larger cuff.
- C. Have the unit educator review this procedure with the UAPs.
- D. Teach the UAP the correct technique for assessing blood pressure.
Correct answer: B
Rationale: The most important action is to ensure that an accurate BP reading is obtained. The nurse should reassess the blood pressure with the correct size cuff (B) to obtain an accurate reading. Postponing reassessment (A) could lead to inaccurate results. While (C and D) are important actions for education and quality improvement, they are not as critical as obtaining an accurate blood pressure reading in this situation.
3. The nurse determines that a postoperative client's respiratory rate has increased from 18 to 24 breaths/min. Based on this assessment finding, which intervention is most important for the nurse to implement?
- A. Encourage the client to increase ambulation in the room.
- B. Offer the client a high-carbohydrate snack for energy.
- C. Force fluids to thin the client's pulmonary secretions.
- D. Determine if pain is causing the client's tachypnea.
Correct answer: D
Rationale: An increased respiratory rate can be a sign of various issues postoperatively, including pain. Assessing and managing pain is crucial as it can lead to tachypnea. Pain, anxiety, and fluid accumulation in the lungs can all contribute to an increased respiratory rate. Therefore, determining if pain is causing the tachypnea is the most important intervention to address the underlying cause. Encouraging ambulation, offering snacks, or forcing fluids are not the priority in this situation as pain assessment takes precedence in managing the increased respiratory rate.
4. A client with a diagnosis of asthma is receiving albuterol (Proventil) via a metered-dose inhaler (MDI). Which assessment finding indicates that the medication is effective?
- A. Increased oxygen saturation.
- B. Decreased respiratory rate.
- C. Absence of audible wheezing.
- D. Improved exercise tolerance.
Correct answer: A
Rationale: Increased oxygen saturation (A) is the most direct indicator of the effectiveness of albuterol (Proventil) in improving breathing. Oxygen saturation reflects the amount of oxygen in the blood, showing that the albuterol is helping with air exchange in the lungs. While decreased respiratory rate (B), absence of audible wheezing (C), and improved exercise tolerance (D) are positive outcomes, they are secondary to oxygen saturation. Oxygen saturation directly reflects the improvement in the client's respiratory status and the effectiveness of the medication.
5. When is the first dose of Hepatitis B vaccine typically administered?
- A. In the hospital at birth
- B. At one year old
- C. At six months
- D. At 18 months
Correct answer: A
Rationale: The first dose of the Hepatitis B vaccine is usually administered at birth in the hospital to provide early protection against the virus. Giving the vaccine at birth helps prevent perinatal transmission of Hepatitis B from an infected mother to her newborn. This early administration is crucial in establishing immunity in infants, as delaying the vaccine increases the risk of infection. Options B, C, and D are incorrect because delaying the administration of the Hepatitis B vaccine can leave infants vulnerable to the virus during the critical early months of life when they are most susceptible.
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