what is the primary function of 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 correct answer is A: Oxygen transport. Hemoglobin in red blood cells binds to oxygen in the lungs and carries it to tissues throughout the body, releasing it where needed. This process is essential for cellular respiration and energy production. Choices B, C, and D are incorrect because hemoglobin's primary function is not related to immunity, blood clotting, or carbon dioxide transport. Hemoglobin's main role is to transport oxygen, ensuring adequate oxygen supply to body tissues for metabolic processes.

2. What is the correct order of steps in the nursing process?

Correct answer: A

Rationale: The correct order in the nursing process is Assessment, Diagnosis, Planning, Implementation, and Evaluation. Assessment involves gathering information about the patient, Diagnosis is identifying the problem, Planning involves setting goals and outcomes, Implementation is carrying out the plan, and Evaluation is assessing the outcomes. Choices B, C, and D have the steps in the incorrect order, not following the standard nursing process framework. Therefore, the correct answer is option A.

3. During the last 30 days, an elderly client has exhibited a progressively decreasing appetite, is spending increasing amounts of daytime hours in bed, and refuses to participate in planned daytime activities. Which action should the practical nurse take?

Correct answer: A

Rationale: The practical nurse should record the findings and report the symptoms to the charge nurse. These behaviors may indicate a serious underlying condition such as depression or physical illness. By reporting to the charge nurse, the client can receive appropriate assessment and intervention promptly. Choice B is incorrect as family visits may not address the root cause of the symptoms. Choice C is incorrect as it oversimplifies the situation and may not be effective in addressing the underlying issue. Choice D is incorrect because withholding medications without proper assessment and guidance can be harmful to the client's health.

4. A client presents to the office with complaints of swelling in the legs, chills, and shortness of breath. During auscultation of the chest, a heart murmur is heard. The client's blood culture reveals a microorganism in the blood. When a microorganism is found in the blood, this condition is called

Correct answer: A

Rationale: When a microorganism is found in the blood, this condition is called bacteremia, which refers to the presence of bacteria in the bloodstream, as indicated by a positive blood culture. If not appropriately treated, bacteremia can progress to septicemia, also known as sepsis. Sepsis is a severe and life-threatening response to an infection, characterized by systemic inflammation and organ dysfunction. Parasitic infections involve pathogens other than bacteria and are not directly related to the scenario described.

5. Which intervention is most appropriate when caring for a patient experiencing a tonic-clonic seizure?

Correct answer: C

Rationale: During a tonic-clonic seizure, the priority is to ensure patient safety by maintaining an open airway to prevent aspiration. Turning the patient to the side helps achieve this goal by allowing any fluids to drain out of the mouth, reducing the risk of choking or aspiration. Restraint can lead to injury, placing a tongue depressor can cause harm or obstruct the airway further, and attempting to stop the seizure by holding the patient's arms is ineffective and can also result in injury. Therefore, the most appropriate intervention is to turn the patient to the side.

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