what is the primary function of the hemoglobin in red blood cells
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HESI LPN

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 documenting information in a client's medical record, what should the nurse do?

Correct answer: D

Rationale: When documenting information in a client's medical record, the nurse should end each entry with their signature and title. This practice is crucial for legal and professional standards compliance as it ensures that the documentation is attributable to the responsible individual. Choices A, B, and C are incorrect because while crossing out errors, using a black ink pen, and leaving a blank line before each entry are good practices, they are not as critical as ensuring each entry is signed and titled by the nurse for accountability and traceability.

3. An adult client is undergoing weekly external radiation treatments for breast cancer. Upon arrival at the outpatient clinic for a scheduled treatment, the client reports increasing fatigue to the PN who is taking the client's vital signs. What action should the PN implement?

Correct answer: D

Rationale: When a client undergoing radiation therapy reports increasing fatigue, it is essential to address this common side effect. Educating the client on the importance of rest and sleep can help manage fatigue and promote recovery. Contacting the healthcare provider or charge nurse immediately may not be necessary unless fatigue is severe and other symptoms are present. Rescheduling the treatment or monitoring vital signs more frequently is not the priority in this situation.

4. What is the first step in using an automated external defibrillator (AED) on a patient who has collapsed?

Correct answer: B

Rationale: The correct answer is B: Turn on the AED and follow the voice prompts. This is the first step in using an AED as the device will guide you through the process of analyzing the heart rhythm and delivering a shock if necessary. Choice A, applying the pads to the chest, comes after turning on the AED. Checking the patient's pulse (Choice C) is not necessary before using an AED as the device is specifically designed to assess the need for defibrillation. Ensuring the area is clear (Choice D) is important for safety but is not the initial step in using an AED.

5. A client who had a left hemicolectomy is experiencing a low-grade fever on post-operative day three. What is the nurse's best action?

Correct answer: A

Rationale: A low-grade fever on post-operative day three can be a sign of atelectasis, a common post-operative complication. Encouraging deep breathing and the use of the incentive spirometer can help prevent and treat this condition. Atelectasis is often due to shallow breathing, so option A is the best initial action to promote lung expansion. Administering antipyretic medication (option B) may help reduce the fever but does not directly address the underlying cause. Notifying the healthcare provider immediately (option C) is not necessary at this point unless other concerning symptoms are present. Increasing the client’s fluid intake (option D) is important for overall recovery but is not the priority in this scenario.

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