HESI LPN
Community Health HESI Study Guide
1. From January 1 to 15, 1996, there were 8 cases of Tetanus neonatorum in San Lazaro Hospital. There were two deaths. What is the case fatality ratio of this disease?
- A. 20%
- B. 30%
- C. 28%
- D. 25%
Correct answer: D
Rationale: The case fatality ratio is calculated as (deaths/cases) * 100. In this case, there were 2 deaths out of 8 cases. Therefore, the calculation is (2/8) * 100 = 25%. Choices A, B, and C are incorrect as they do not match the correct calculation.
2. To prevent keratitis in an unconscious client, where should the nurse apply moisturizing ointment?
- A. Finger and toenail quicks
- B. Eyes
- C. Perianal area
- D. External ear canals
Correct answer: B
Rationale: The correct answer is B: Eyes. Applying moisturizing ointment to the eyes helps prevent keratitis, a condition that can occur due to inadequate blinking in unconscious clients, leading to corneal dryness and potential damage. Choices A, C, and D are incorrect as moisturizing ointment should not be applied to finger and toenail quicks, perianal area, or external ear canals to prevent keratitis.
3. A male client is brought to the emergency department as the result of a motorcycle accident. He was not wearing a helmet at the time of the accident and states that he has no intention of ever wearing one. Within the framework of the Transtheoretical Model (TTM), which response should the nurse provide?
- A. Wearing a helmet or not is certainly an individual decision.
- B. You should seriously consider wearing a helmet.
- C. Riding a motorcycle with a helmet increases your safety.
- D. I really think you don't have the facts about helmet use.
Correct answer: C
Rationale: Providing information on safety aligns with the TTM framework.
4. The nurse is caring for a client on mechanical ventilation. When performing endotracheal suctioning, the nurse will avoid hypoxia by
- A. Inserting a fenestrated catheter with a whistle tip without suction
- B. Completing the suction pass in 30 seconds with a pressure of 150 mm Hg
- C. Hyperoxygenating with 100% O2 for 1 to 2 minutes before and after each suction pass
- D. Minimizing the suction pass to 60 seconds while slowly rotating the lubricated catheter
Correct answer: C
Rationale: Hyperoxygenating the client before and after suctioning helps prevent hypoxia by ensuring adequate oxygen levels during the procedure, which briefly interrupts the client's normal breathing pattern. Choice A is incorrect because inserting a fenestrated catheter with a whistle tip without suction would not prevent hypoxia. Choice B is incorrect as completing the suction pass in 30 seconds with a pressure of 150 mm Hg may lead to hypoxia. Choice D is incorrect as minimizing the suction pass to 60 seconds may not provide enough time for effective suctioning and could lead to hypoxia.
5. While assessing an Rh-positive newborn whose mother is Rh-negative, the nurse recognizes the risk for hyperbilirubinemia. Which of the following should be reported immediately?
- A. Jaundice evident at 26 hours
- B. Hematocrit of 55%
- C. Serum bilirubin of 12 mg/dL
- D. Positive Coombs test
Correct answer: C
Rationale: A serum bilirubin level of 12 mg/dL in a newborn is concerning and can indicate a significant risk of hyperbilirubinemia, which requires immediate medical intervention to prevent complications like kernicterus. Jaundice at 26 hours (Choice A) is a symptom, not a laboratory result, and needs monitoring but not an immediate report. Hematocrit of 55% (Choice B) may be elevated but is not indicative of hyperbilirubinemia. A positive Coombs test (Choice D) indicates the presence of antibodies on the newborn's red blood cells but does not directly correlate with the risk of hyperbilirubinemia.
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