what is the primary function of the hemoglobin in red blood cells
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HESI PN Exit Exam 2023

1. What is the primary function of hemoglobin in red blood cells?

Correct answer: A

Rationale: The primary function of hemoglobin in red blood cells is to transport oxygen from the lungs to body tissues and return carbon dioxide from the tissues to the lungs. Hemoglobin binds to oxygen in the lungs and releases it in the body's tissues. Choice B is incorrect because hemoglobin is not involved in protecting the body from infections. Choice C is incorrect because blood clotting is mainly facilitated by platelets and clotting factors, not hemoglobin. Choice D is incorrect because the regulation of body temperature is mainly controlled by processes like sweating and shivering, not by hemoglobin.

2. When reinforcing diet teaching for a client diagnosed with hypokalemia, which foods should the PN encourage the client to eat? Select All That Apply

Correct answer: B

Rationale: The correct answer is B: All are applicable. Foods rich in potassium, such as orange juice, oranges, bananas, collard greens, kale, soybeans, lima beans, and spinach, are essential for managing hypokalemia. These options provide a significant source of potassium, which helps in maintaining normal heart and muscle function. Choice A is incorrect because it does not include all the appropriate potassium-rich foods. Choice C is incorrect as it only mentions vegetables rich in potassium, missing out on other essential sources like fruits and beans. Choice D is incorrect as it lacks key potassium-rich foods like oranges and bananas.

3. A nurse is reviewing the basal body temperature method with a couple. Which of the following statements would indicate that the teaching has been successful?

Correct answer: C

Rationale: The correct answer is C. Basal body temperature must be taken before getting out of bed in the morning to get an accurate reading, as even slight activity can raise body temperature and affect the results. Choice A is incorrect because a special type of thermometer is not required for basal body temperature measurement. Choice B is incorrect because smoking can affect body temperature, but the timing mentioned is not relevant to basal body temperature measurement. Choice D is incorrect because while it is essential to take the temperature consistently each day, the duration of temperature measurement is not specified, making this choice less specific compared to the correct answer.

4. At the end of a 12-hour shift, the PN observes the urine in a client's drainage bag as seen in the picture. Which action should the PN take next?

Correct answer: D

Rationale: Noting the white blood cell count is the most appropriate action in this situation. Changes in urine appearance could indicate infection, and assessing the white blood cell count helps in evaluating the possibility of infection. This is crucial for understanding the client's overall condition. The other options are not directly related to assessing infection based on urine appearance. Offering analgesics, checking glucose levels, or determining bladder distention may not address the underlying issue of a potential infection.

5. What dietary considerations must the nurse keep in mind for a patient who is an Orthodox Jew?

Correct answer: B

Rationale: Orthodox Jews follow dietary laws (Kashrut) that prohibit mixing meat and dairy products in the same meal. This restriction is known as 'not mixing milk and meat.' Therefore, choice B is the correct answer. Choices A, C, and D are incorrect because being an Orthodox Jew does not mean they can eat any food unless it is Yom Kippur, avoid meat on Ash Wednesday, or are necessarily vegetarian.

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