HESI RN
Biology Practice Test
1. Which of the following provides support and shape to the cell?
- A. Microtubules
- B. Microfilaments
- C. Cilia
- D. Microvilli
Correct answer: A
Rationale: Microtubules are fundamental components of the cytoskeleton in a cell, playing a crucial role in providing structural support and maintaining the cell's shape. They are composed of tubulin protein subunits and are involved in various cellular processes like cell division, intracellular transport, and cell motility. Microfilaments, on the other hand, are involved in cell movement and maintaining cell shape but are not primarily responsible for supporting the cell's overall structure. Cilia and microvilli are cellular projections that aid in movement and absorption, respectively, but they do not play a significant role in providing structural support to the cell.
2. Which of the following is a common complication of hypertension?
- A. Diabetes.
- B. Heart failure.
- C. Kidney failure.
- D. Stroke.
Correct answer: D
Rationale: The correct answer is D: Stroke. Hypertension can lead to stroke due to the increased pressure on blood vessels in the brain, which can result in reduced blood flow and oxygen to the brain tissue. While choices B (Heart failure) and C (Kidney failure) can be complications of hypertension, they are not as directly associated as stroke. Choice A, Diabetes, is not a direct complication of hypertension but rather a separate condition that can be influenced by various factors. However, stroke is more commonly linked to the increased pressure on blood vessels in the brain in individuals with hypertension.
3. What instruction should be provided for a UAP caring for a client with MRSA who has an order for contact precautions?
- A. Do not allow visitors until precautions are discontinued
- B. Wear sterile gloves when handling the client’s body fluids
- C. Have the client wear a mask whenever someone enters the room
- D. Don a gown and gloves when entering the room
Correct answer: D
Rationale: The correct instruction for a UAP caring for a client with MRSA under contact precautions is to don a gown and gloves when entering the client's room. This precaution is essential to prevent the spread of MRSA and protect both the client and the healthcare worker from potential infection. Choice A is incorrect because visitors should not be restricted solely based on contact precautions. Choice B is incorrect as wearing sterile gloves is not necessary, standard precautions with regular gloves are sufficient. Choice C is incorrect because the client wearing a mask is not a standard practice for contact precautions; it is the healthcare worker who should take preventive measures.
4. An adolescent female who comes to the school clinic is reluctant to confide her concerns to the practical nurse (PN). The PN tells the teen that confidentiality and privacy are maintained unless a life-threatening situation arises. Which principle supports the PN's response?
- A. The adolescent should be encouraged to seek help outside of the school clinic.
- B. Disclosures from the adolescent should be kept confidential.
- C. Honest information ensures establishing a trusting relationship.
- D. Minor adolescents should not be encouraged to disclose private concerns.
Correct answer: C
Rationale: The correct principle supporting the practical nurse's response is that honest information ensures establishing a trusting relationship. By assuring confidentiality and privacy to the adolescent unless there is a life-threatening situation, the practical nurse fosters an environment where the teen feels safe to share their concerns openly. This approach helps build trust, encouraging effective communication and support for the adolescent's well-being. Choices A, B, and D are incorrect because encouraging seeking help outside the school clinic, keeping disclosures confidential, and discouraging minor adolescents from sharing private concerns do not address the immediate need to build trust and ensure the well-being of the adolescent in a school setting.
5. A client who is 12-hours post-op following a left hip replacement has an indwelling urinary catheter. The nurse determines that the client's urinary output is 60 ml in the past 3 hours. What action should the nurse take first?
- A. Assess the client's vital signs
- B. Irrigate the catheter with 30 ml of sterile normal saline
- C. Notify the healthcare provider
- D. Replace the catheter with a larger size
Correct answer: A
Rationale: In a client post-op with low urinary output, the first action the nurse should take is to assess the client's vital signs. Vital signs can provide valuable information about the client's overall condition, fluid status, and potential complications. Assessing the vital signs can help the nurse to determine if the low urine output is indicative of a larger issue that needs immediate attention. Irrigating the catheter with normal saline may be necessary but should not be the first action without assessing the client. Notifying the healthcare provider should follow assessment if there are concerns. Replacing the catheter with a larger size is not indicated solely based on low urinary output and should not be the first action taken.