A nurse is teaching a class about oxygen transport in the cardiopulmonary system. Which of the following transports oxygen in the blood?
Lymphocytes
Neutrophils
Platelets
Hemoglobin
The Correct Answer is D
A. Lymphocytes are a type of white blood cell that plays a crucial role in the immune system, specifically in the response to infections and in immune regulation. They do not have a role in the transport of oxygen in the blood.
B. Neutrophils are another type of white blood cell that is essential for fighting bacterial infections. They are part of the body's immune response but do not transport oxygen.
C. Platelets are small cell fragments that are crucial for blood clotting and wound repair. They do not have a role in oxygen transport.
D. Hemoglobin is the primary molecule responsible for transporting oxygen in the blood. It is a protein found in red blood cells (erythrocytes) that binds to oxygen in the lungs and releases it in tissues throughout the body. Hemoglobin carries the majority of oxygen in the bloodstream and is essential for effective oxygen transport and delivery.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. While asking appropriate questions demonstrates that the partner is engaged and seeking understanding, it alone does not indicate that they are ready to perform the procedure independently.
B. Being able to verbalize all steps in the procedure shows that the partner has knowledge and understanding of the process. However, verbalizing alone does not confirm that they can perform the procedure accurately and safely. Practical skills and hands-on competence are crucial for readiness.
C. Attending a class provides important theoretical knowledge and information about tracheostomy care. However, attending a class by itself does not guarantee that the partner has developed the necessary skills to perform suctioning independently.
D. The ability to perform the procedure independently indicates that the partner has acquired the necessary skills and confidence to carry out suctioning safely and effectively. It shows practical proficiency, which is essential for readiness for discharge. The partner’s ability to perform suctioning without assistance demonstrates that they can handle the procedure in real-life situations.
Correct Answer is C
Explanation
A. Sodium bicarbonate is used to treat metabolic acidosis, not respiratory alkalosis. It helps to neutralize excess acid in the blood, which is not the issue in respiratory alkalosis where the problem is a deficit of CO₂, not an excess of acid.
B. Placing the head between the knees might help with dizziness or lightheadedness but does not address the underlying issue of hyperventilation or help with CO₂ retention.
C. Breathing into a paper bag can help the client re-breathe exhaled CO₂, which helps to correct the imbalance caused by hyperventilation. This method assists in raising CO₂ levels in the blood, which can help normalize the pH and alleviate symptoms of respiratory alkalosis.
D. Insulin is used to manage blood glucose levels in diabetes and is not relevant to the treatment of respiratory alkalosis.
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