HESI LPN
Community Health HESI Practice Exam
1. A client is scheduled to have a blood test for cholesterol and triglycerides the next day. The nurse would tell the client
- A. ''Be sure to eat a fat-free diet until the test.''
- B. ''Do not eat or drink anything but water for 12 hours before the blood test.''
- C. ''Have the blood drawn within 2 hours of eating breakfast.''
- D. ''Stay at the laboratory so 2 blood samples can be drawn an hour apart.''
Correct answer: B
Rationale: Fasting for at least 12 hours is necessary before a cholesterol and triglyceride test to ensure accurate results by avoiding fluctuations that can occur after eating. Choice A is incorrect because a fat-free diet is not required; fasting is. Choice C is incorrect as it suggests having the test right after eating, which can affect the results. Choice D is incorrect as there is no need to stay at the laboratory for 2 blood samples unless specifically instructed by a healthcare provider.
2. The school nurse is called to the playground for an episode of mouth trauma. The nurse finds that the front tooth of a 9-year-old child has been avulsed (knocked out). After recovering the tooth, the initial response should be to
- A. Rinse the tooth in water before placing it in the socket
- B. Place the tooth in a clean plastic bag for transport to the dentist
- C. Hold the tooth by the roots until reaching the emergency room
- D. Ask the child to replace the tooth even if the bleeding continues
Correct answer: A
Rationale: The correct immediate action after recovering an avulsed tooth is to rinse it with water and place it back in the socket. This helps preserve the tooth and increases the chances of successful re-implantation. Placing the tooth in a clean plastic bag for transport to the dentist (choice B) is not ideal as immediate re-implantation is preferred. Holding the tooth by the roots until reaching the emergency room (choice C) can further damage the tooth. Asking the child to replace the tooth even if bleeding continues (choice D) is incorrect and may lead to improper re-implantation.
3. A client is admitted with the diagnosis of myocardial infarction (MI). Which of the following lab values would be consistent with this diagnosis?
- A. Low serum albumin
- B. High serum cholesterol
- C. Abnormally low white blood cell count
- D. Elevated creatinine phosphokinase (CPK)
Correct answer: D
Rationale: The correct answer is D: Elevated creatinine phosphokinase (CPK). Elevated CPK levels indicate muscle damage, including damage to the cardiac muscle, which aligns with the diagnosis of myocardial infarction. Choice A, low serum albumin, is not directly related to myocardial infarction. Choice B, high serum cholesterol, is more associated with conditions like atherosclerosis rather than acute myocardial infarction. Choice C, abnormally low white blood cell count, is typically not a lab value associated with myocardial infarction; instead, it could suggest other conditions like infections or bone marrow issues.
4. When a nurse teaches a community about the importance of hand hygiene, the nurse is engaging in:
- A. Primary prevention
- B. Secondary prevention
- C. Tertiary prevention
- D. Quaternary prevention
Correct answer: A
Rationale: The correct answer is A: Primary prevention. Primary prevention aims to prevent the occurrence of a disease or injury before it happens. Teaching about hand hygiene to the community helps in preventing infections from occurring in the first place. Choice B, Secondary prevention, involves early detection and treatment to halt or slow the progress of a condition. This would involve screening or early intervention after exposure. Choice C, Tertiary prevention, focuses on managing the disease to prevent complications, recurrence, or deterioration. This would include rehabilitation and monitoring to prevent further complications. Choice D, Quaternary prevention, relates to actions taken to avoid unnecessary interventions or over-medicalization. This usually involves questioning the necessity of certain medical procedures or treatments to prevent harm to patients.
5. In the provision of preventive care to workers, the nurse must be aware of biological hazards that are harmful to workers and their families, such as:
- A. bacteria, fungi, and insects
- B. noise
- C. toxic metals, poisonous gas fumes, and dust
- D. stress
Correct answer: A
Rationale: The correct answer is A: bacteria, fungi, and insects. Biological hazards in the workplace can include microorganisms like bacteria and fungi that can cause infections, as well as insects that may carry diseases. Noise (choice B) is considered a physical hazard, not a biological one. Toxic metals, poisonous gas fumes, and dust (choice C) are examples of chemical hazards, not biological hazards. While stress (choice D) can be a health concern in the workplace, it is not classified as a biological hazard.
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