HESI LPN
HESI Fundamentals Study Guide
1. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Increased serum hemoglobin levels
- D. Decreased serum potassium levels
Correct answer: B
Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.
2. A 3-year-old child diagnosed with celiac disease attends a daycare center. Which of the following would be an appropriate snack?
- A. Cheese crackers
- B. Peanut butter sandwich
- C. Potato chips
- D. Vanilla cookies
Correct answer: C
Rationale: The correct answer is potato chips. As a child with celiac disease needs to avoid gluten, potato chips are a suitable snack choice as they are typically gluten-free. Cheese crackers (Choice A) and vanilla cookies (Choice D) contain gluten, which should be avoided by individuals with celiac disease. While peanut butter sandwiches (Choice B) could be gluten-free depending on the bread used, it is not the best choice as cross-contamination is a concern in shared environments like daycare centers.
3. A policy requiring the removal of acrylic nails by all nursing personnel was implemented 6 months ago. Which assessment measure best determines if the intended outcome of the policy is being achieved?
- A. Number of staff-induced injuries
- B. Client satisfaction survey
- C. Healthcare-associated infection rate
- D. Rate of needle-stick injuries by nurses
Correct answer: C
Rationale: The correct answer is C: Healthcare-associated infection rate. This measure best indicates the effect of the policy on infection control. By monitoring the healthcare-associated infection rate, it can be determined if the policy of removing acrylic nails has contributed to reducing the risk of infections. Choices A, B, and D are not as directly linked to the outcome of the policy. The number of staff-induced injuries may not be solely due to acrylic nails. Client satisfaction may not be directly impacted by this policy, and needle-stick injuries are more related to a different aspect of healthcare practice.
4. A healthcare professional is caring for a client with a chest tube. Which observation requires immediate intervention?
- A. Constant bubbling in the suction control chamber
- B. Intermittent bubbling in the water seal chamber
- C. Drainage of 50 ml per hour
- D. Crepitus around the insertion site
Correct answer: D
Rationale: Crepitus around the chest tube insertion site may indicate subcutaneous emphysema, a serious condition that requires immediate attention. It can be a sign of an air leak in the lung or surrounding tissues. Constant bubbling in the suction control chamber is expected in a functioning chest tube system as it indicates proper suction. Intermittent bubbling in the water seal chamber is also normal, showing that the system is functioning correctly, allowing air to escape but not re-enter. Drainage of 50 ml per hour is within the expected range for chest tube output and does not require immediate intervention unless there are other concerning signs such as rapid increase or a sudden change in color or consistency.
5. When planning home care for a 72-year-old client with osteomyelitis requiring a 6-week course of intravenous antibiotics, what is the most important action by the nurse?
- A. Investigating the client's insurance coverage for home IV antibiotic therapy
- B. Determining if there are adequate hand washing facilities in the home
- C. Assessing the client's ability to participate in self-care and/or the reliability of a caregiver
- D. Selecting the appropriate venous access device
Correct answer: C
Rationale: Assessing the client's ability to participate in self-care or evaluating the reliability of a caregiver is crucial in ensuring adherence to the treatment plan. This action helps determine if the client can manage the intravenous antibiotics at home independently or if assistance is needed. Investigating insurance coverage, ensuring hand washing facilities, and selecting the venous access device are important aspects of care but assessing the client's ability for self-care and caregiver reliability takes precedence to promote treatment success and safety.
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