HESI LPN
Community Health HESI Study Guide
1. An infant has just returned from surgery for placement of a gastrostomy tube as an initial treatment for tracheoesophageal fistula. The mother asks, 'When can the tube be used for feeding?' The nurse's best response would be which of these comments?
- A. "Feedings can begin in 5 to 7 days."
- B. "The use of the feeding tube can begin immediately."
- C. "The stomach contents and air must be drained first."
- D. "The incision healing must be complete before feeding."
Correct answer: C
Rationale: The correct answer is C: 'The stomach contents and air must be drained first.' Before starting feedings through a gastrostomy tube, it is essential to drain the stomach contents and air. This process helps prevent complications and ensures the proper functioning of the tube after placement. Choice A is incorrect because initiating feedings within 5 to 7 days may lead to complications if the stomach is not adequately prepared. Choice B is incorrect as feeding should not begin immediately to allow for proper preparation of the tube and the stomach. Choice D is incorrect because although incision healing is important, draining the stomach contents and air is a more immediate concern to prevent complications.
2. A newborn presents with a pronounced cephalic hematoma following a birth in the posterior position. Which nursing diagnosis should guide the plan of care?
- A. Pain related to periosteal injury
- B. Impaired mobility related to bleeding
- C. Parental anxiety related to knowledge deficit
- D. Injury related to intracranial hemorrhage
Correct answer: C
Rationale: The correct nursing diagnosis to guide the plan of care for a newborn with a pronounced cephalic hematoma following a birth in the posterior position is 'Parental anxiety related to knowledge deficit.' This is appropriate because the parents may be worried about the appearance and potential complications of the cephalic hematoma. They may require education and reassurance from the nurse. Choices A, B, and D are incorrect because they do not address the emotional needs of the parents and the knowledge deficit they may have regarding the condition.
3. 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.
4. A community health action that focuses on reducing the frequency and severity of asthma in inner-city children by requiring a local incinerator to install particulate filters is an example of:
- A. downstream intervention
- B. risk management
- C. primary prevention
- D. upstream intervention
Correct answer: D
Rationale: The correct answer is D: upstream intervention. Upstream thinking addresses the root causes of health problems to create long-term solutions. In this scenario, requiring the incinerator to install particulate filters tackles the root cause of asthma triggers, which is pollution, rather than just managing the symptoms or risks associated with asthma. Choice A, downstream intervention, would focus more on treating asthma symptoms after they have already occurred rather than preventing them. Choice B, risk management, typically involves strategies to assess, control, or mitigate risks, which may not directly address the root cause. Choice C, primary prevention, usually refers to actions taken to prevent a disease or condition before it occurs, but in this case, the action is targeting the underlying cause rather than preventing asthma itself.
5. Epidemiology is directly concerned with which of the following?
- A. factors influencing occurrence and distribution of diseases, defects, disability, or death of groups of individuals
- B. vital health statistics
- C. environmental sanitation
- D. treatment of a communicable disease
Correct answer: A
Rationale: Corrected Rationale: Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations and the application of this study to the control of health problems. It focuses on identifying and understanding the factors that influence the occurrence and distribution of diseases, defects, disability, or death of groups of individuals. Therefore, the correct answer is A. Choice B, vital health statistics, is not the primary focus of epidemiology. While vital health statistics may be used in epidemiological studies, it is not the direct concern of epidemiology. Choice C, environmental sanitation, although important for public health, is not the main focus of epidemiology. Epidemiology is more concerned with the factors influencing disease occurrence and distribution, rather than environmental sanitation. Choice D, treatment of a communicable disease, is more related to clinical medicine rather than epidemiology. Epidemiology is more focused on prevention, control, and understanding the patterns and causes of diseases rather than their treatment.
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