A nurse is teaching a class about oxygen transport in the circulatory system. Which of the following transports oxygen in the blood?

Platelets

Neutrophils

Hemoglobin

Lymphocytes

Answer and Explanation

The Correct Answer is C

Choice A reason:

Platelets are involved in blood clotting and do not play a role in oxygen transport. Their primary function is to prevent bleeding by forming clots in damaged blood vessels.

Choice B reason:

Neutrophils are a type of white blood cell that helps fight infection. They are part of the immune system and do not transport oxygen.

Choice C reason:

Hemoglobin, a protein found in red blood cells, is responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs. It binds with oxygen in the lungs and releases it in the body’s tissues, playing a critical role in respiratory gas exchange.

Choice D reason:

Lymphocytes are another type of white blood cell involved in the immune response. They do not carry oxygen but are vital for fighting infections and producing antibodies.

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Correct Answer is A

Explanation

Choice A reason:

Esophageal reflux, or gastroesophageal reflux disease (GERD), can lead to Barrett's esophagus if left untreated. Chronic acid exposure from GERD causes changes in the esophageal lining, increasing the risk of developing Barrett's esophagus, a precancerous condition requiring monitoring and management.

Choice B reason:

Eating hot and spicy food may exacerbate symptoms of GERD but is not a direct cause of Barrett's esophagus. It can irritate the esophageal lining temporarily but does not lead to the cellular changes associated with Barrett's esophagus.

Choice C reason:

Frequent episodes of vomiting can damage the esophagus and lead to other complications but are not specifically linked to the development of Barrett's esophagus. The primary cause is chronic acid reflux rather than mechanical or chemical irritation from vomiting.

Choice D reason:

Esophageal polyps are growths that can occur in the esophagus but are not related to Barrett's esophagus. Barrett's esophagus results from prolonged acid exposure and cellular changes, whereas polyps are distinct growths that may require different monitoring and management strategies.

A. obtain a chest x-ray B. raise the head of the bed C. administer prescribed analgesic D. administer oxygen at 2 L/min

Correct Answer is D

Explanation

Choice A reason: Obtaining a chest x-ray can provide important diagnostic information about the client's lung condition, but it is not the immediate first action. The priority is to address the low oxygen saturation to ensure adequate oxygenation.

Choice B reason: Raising the head of the bed can help improve oxygenation by facilitating easier breathing. However, in this scenario, the immediate need to increase oxygen levels through supplemental oxygen takes precedence over repositioning.

Choice C reason: Administering a prescribed analgesic might be necessary for pain management, but it does not address the critical issue of low oxygen saturation. The primary concern is to stabilize the client's oxygen levels first.

Choice D reason: This is the correct answer. Administering oxygen at 2 L/min is the most immediate and effective intervention to improve the client's oxygen saturation. Supplemental oxygen will help increase the oxygen levels in the blood, addressing the immediate need for adequate oxygenation.

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A nurse is teaching a class about oxygen transport in the circulatory system. Which of the following transports oxygen in the blood?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse should be aware that Barrett's esophagus is a complication from what medical condition if left untreated?

Correct Answer is A

Explanation

A nurse is caring for a client who has returned to the unit following a surgical procedure. The client's oxygen saturation is 85%. Which action should the nurse take first?

Correct Answer is D

Explanation

The patient has just been started on enteral feeding and has developed diarrhea after being on the feeding for 2 hours. What does the nurse suspect is the most likely cause of the diarrhea?

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