HESI LPN
CAT Exam Practice
1. The healthcare provider prescribes potassium chloride 25 mEq in 500 ml D5W to infuse over 6 hours. The available 20 ml vial of potassium chloride is labeled '10 mEq/5 ml.' How many ml of potassium chloride should the nurse add to the IV fluid?
- A. 12.5
- B. 5
- C. 10
- D. 20
Correct answer: B
Rationale: To prepare 25 mEq of potassium chloride for the infusion, the nurse should add 5 ml of the 10 mEq/5 ml solution. This concentration provides the required amount of potassium chloride without exceeding the needed volume. Choice A would result in 12.5 mEq, which exceeds the prescribed amount. Choices C and D are incorrect as they do not align with the correct calculation based on the vial concentration.
2. When designing a program to provide primary preventative health care to a community-based healthcare system, which service should the nurse consider for inclusion in the program? Select all that apply.
- A. Breast screening for older women
- B. Rehabilitation services for stroke victims
- C. Blood pressure assessments
- D. Antepartum nutritional counseling
Correct answer: A
Rationale: The correct answer is A: Breast screening for older women. In the context of primary preventative health care, breast screening for older women is crucial for early detection of breast cancer. Choice B, rehabilitation services for stroke victims, focuses on rehabilitative care rather than primary preventative care. Choice C, blood pressure assessments, is important for monitoring health status but not exclusive to primary prevention. Choice D, antepartum nutritional counseling, is more related to prenatal care than primary preventative health care. Therefore, choices B, C, and D do not directly align with the primary preventative health care objective of the grant.
3. Why is it important to initiate nursing interventions that promote good nutrition, rest, exercise, and stress reduction for clients diagnosed with an HIV infection?
- A. Prevent the spread of infection to others
- B. Improve the function of the immune system
- C. Increase the ability to carry out activities of daily living
- D. Promote a feeling of general well-being
Correct answer: B
Rationale: The correct answer is B: 'Improve the function of the immune system.' Initiating interventions focusing on good nutrition, rest, exercise, and stress reduction aims to enhance the immune system function in clients with HIV infection. For individuals with HIV, maintaining a strong immune system is crucial in fighting the virus and preventing opportunistic infections. Choices A, C, and D are important aspects of care but are secondary to the primary goal of boosting the immune system to combat the effects of the HIV virus.
4. The charge nurse is making assignments for clients on an endocrine unit. Which client is best to assign to a new graduate nurse?
- A. A female adult with hyperthyroidism who is returning to the unit after a thyroidectomy
- B. A male adult with Cushing's syndrome who reports a headache and visual disturbances
- C. An older man with Addison's disease who is diaphoretic and has hand tremors
- D. A perimenopausal woman with Graves' disease who is nervous and has exophthalmos
Correct answer: A
Rationale: A new graduate nurse can manage the care of a stable client returning from a thyroidectomy. Choice B is not suitable for a new graduate nurse as it involves complex symptoms of Cushing's syndrome that require more experience and knowledge. Choice C presents a client with acute manifestations of Addison's disease, which may be challenging for a new graduate nurse. Choice D involves a client with Graves' disease experiencing nervousness and exophthalmos, which also require a higher level of expertise to manage effectively.
5. What instruction should the nurse provide a pregnant client experiencing heartburn?
- A. Limit fluid intake between meals to prevent stomach over-distension
- B. Take an antacid at bedtime and when symptoms worsen
- C. Maintain an upright position for two hours after eating
- D. Eat small meals throughout the day to avoid a full stomach
Correct answer: D
Rationale: The correct answer is D: 'Eat small meals throughout the day to avoid a full stomach.' Heartburn is common in pregnancy due to increased intra-abdominal pressure and hormonal changes. Consuming small, frequent meals prevents the stomach from becoming overly full, reducing the likelihood of acid reflux and heartburn. Choice A is incorrect because limiting fluid intake between meals may not significantly impact heartburn. Choice B is not ideal as antacids should be taken as directed by a healthcare provider, not just at bedtime or when symptoms worsen. Choice C is less effective advice, as maintaining an upright position after eating may not directly address the root cause of heartburn.
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