Nursing Elites

1. When a client needs oxygen therapy, what is the highest flow rate that oxygen can be delivered via nasal cannula?

• A. 2 liters/minute
• B. 4 liters/minute
• C. 6 liters/minute
• D. 8 liters/minute

Correct answer: C

Rationale: The correct answer is 6 liters/minute. When a client requires oxygen therapy, the maximum flow rate that oxygen can be delivered via nasal cannula is 6 liters/minute. Nasal cannula can effectively deliver oxygen up to 6 liters/minute. Flow rates exceeding 6 liters/minute may lead to drying of the nasal passages and discomfort for the client. Higher flow rates, like 8 liters/minute, should be administered using a mask to ensure sufficient oxygenation. Options A, B, and D are incorrect as they indicate flow rates that surpass the recommended maximum for nasal cannula delivery.

2. Which of the following isoenzymes is elevated in a client who has had a myocardial infarction?

• A. CPK-BB
• B. CPK-MM
• C. CPK-MB
• D. CPK-MI

Correct answer: C

Rationale: CPK-MB is the correct answer as it is elevated in clients who have had a myocardial infarction. CPK-BB is elevated in clients with brain damage, and CPK-MM is elevated in clients with skeletal muscle damage. CPK-MI, mentioned in the rationale, does not exist, making it an incorrect choice.

3. Distribution of a drug to various tissues depends on the amount of cardiac output to each type of tissue. Which tissue would receive the highest amount of cardiac output and thus the highest amount of a drug?

• A. skin
• B. adipose tissue
• C. skeletal muscle
• D. myocardium

Correct answer: D

Rationale: The correct answer is 'myocardium.' Highly perfused tissues include vital organs like the brain, heart, kidneys, adrenal glands, and liver. The myocardium, being heart muscle, receives the highest amount of cardiac output and thus the highest amount of a drug. Choices A, B, and C are incorrect because the skin and adipose tissue are poorly perfused, while skeletal muscle is less perfused compared to vital organs like the myocardium.

4. The nurse has completed client teaching about introducing solid foods to an infant. To evaluate teaching, the nurse asks the mother to identify an appropriate first solid food. Which of the following is an appropriate response?

• A. pureed canned squash
• B. pureed apples
• C. yogurt
• D. infant rice cereal

Correct answer: D

Rationale: The correct answer is infant rice cereal. Single-grain infant cereals are recommended as the first solid food because they are easily digestible and have added iron content. Choice C, yogurt, is incorrect because yogurt is a milk product and should be delayed until the child is 12 months old due to the risk of milk allergy. Choices A and B are incorrect because fruits and vegetables are typically introduced after cereals to help the infant get accustomed to solid foods gradually.

5. The LPN has been given assignments by the RN. Which assignment should the LPN question as being beyond the scope of the LPN?

• A. The LPN is assigned to care for a client with diabetes mellitus who needs instructions reinforced on how to self-administer insulin.
• B. The LPN is assigned to reinforce discharge teaching about dressing changes and medications to a 35-year-old man.
• C. The LPN is assigned to care for a 75-year-old woman, hospitalized for dehydration, who is being discharged home today with no medications.
• D. The LPN is assigned to care for a woman with newly diagnosed leukemia who will be receiving her initial dose of chemotherapy.

Correct answer: D

Rationale: The LPN should be able to recognize when an assignment is beyond their scope of practice. Administering chemotherapy for leukemia is not within the scope of practice for the LPN, and this assignment should be questioned. Choices A, B, and C are within the scope of practice for an LPN. Reinforcing teaching on self-administration of insulin, assisting with discharge instructions on dressing changes, and caring for a client being discharged with no medications are all appropriate tasks for an LPN.

Similar Questions