ATI RN
Respiratory System Questions Questions
Question 1 of 5
Nurse Oliver is caring for a client immediately after removal of the endotracheal tube. The nurse reports which of the following signs immediately if experienced by the client?
Correct Answer: A
Rationale: The correct answer is A: Stridor. Stridor is a high-pitched, harsh sound heard during inspiration or expiration due to airway obstruction. It is a critical sign that requires immediate attention as it indicates a potential blockage in the airway, which can lead to respiratory distress or failure. Explanation of why other choices are incorrect: - B: Occasional pink-tinged sputum may indicate mild bleeding, but it is not an immediate concern post-extubation. - C: A few basilar lung crackles on the right could indicate fluid in the lungs, but it is not as urgent as airway obstruction. - D: A respiratory rate of 24 breaths/min is within the normal range for an adult and does not necessarily indicate an immediate issue post-extubation.
Question 2 of 5
When asked by a tubercular patient how long he will have to take his TB medications, the nurse's best response would be:
Correct Answer: B
Rationale: The correct answer is B. Tuberculosis requires a prolonged treatment duration to ensure complete eradication of the bacterial infection. Typically, TB medications need to be taken for at least 6 to 9 months to prevent relapse or drug resistance. In some cases, especially if drug-resistant strains are involved, treatment can last up to 2 years. Choice A is incorrect because 2 weeks is not a sufficient duration for TB treatment. Choice C is incorrect because TB medications are not usually taken throughout the entire lifespan, but for a specific treatment period. Choice D is incorrect as it does not provide a specific and accurate answer to the patient's query regarding the duration of the treatment.
Question 3 of 5
Which of the following is NOT a function of the nasal cavities?
Correct Answer: D
Rationale: The correct answer is D: Oxygenate the blood. Nasal cavities are not directly involved in the process of oxygenating the blood. The main function of the nasal cavities is to filter dust out of incoming air, detect odors, and warm the air before it reaches the lungs. The blood is oxygenated in the lungs through the process of respiration, where oxygen from the air is absorbed into the bloodstream. Nasal cavities play a role in preparing the air for this process but do not directly oxygenate the blood.
Question 4 of 5
The enzyme responsible for converting free carbon dioxide in the blood into forms in which it can be transported in the blood is
Correct Answer: A
Rationale: The correct answer is A: carbonic anhydrase. This enzyme catalyzes the conversion of carbon dioxide and water into bicarbonate ions and protons, enabling efficient transport of CO2 in the blood. Carboxypeptidase (B) is involved in protein digestion, not CO2 transport. Carbonase (C) is not a recognized enzyme. Decarboxylase (D) catalyzes the removal of carboxyl groups from molecules, not the conversion of CO2 in the blood. Therefore, only carbonic anhydrase is the correct enzyme for this specific function.
Question 5 of 5
As blood enters the systemic capillaries
Correct Answer: B
Rationale: Step-by-step rationale: 1. Oxygen diffuses from areas of higher concentration to lower concentration. 2. Blood entering systemic capillaries is oxygen-rich. 3. Tissues have lower oxygen concentration. 4. Therefore, PO2 in the blood is higher than that in the tissues. Summary: Option B is correct as oxygen moves from blood to tissues due to the concentration gradient. Option A is incorrect as PO2 in blood is higher. Option C is incorrect due to the oxygen concentration difference. Option D is incorrect as the concentration gradient drives oxygen diffusion.