ATI RN
Questions Respiratory System Questions
Question 1 of 5
Hemoglobin
Correct Answer: B
Rationale: The correct answer is B because hemoglobin follows the principle of partial pressure, which states that gases move from areas of higher partial pressure to lower partial pressure. Therefore, hemoglobin will pick up more oxygen when the partial pressure of oxygen is higher, such as in the lungs. Choice A is incorrect because hemoglobin actually releases oxygen at higher temperatures. Choice C is incorrect because hemoglobin picks up oxygen when it is not fully saturated. Choice D is incorrect because hemoglobin releases oxygen when the partial pressure of oxygen is higher, not when it is lower.
Question 2 of 5
Residual volume in lungs of an average human is
Correct Answer: D
Rationale: The correct answer is D (1500 ml) because residual volume refers to the amount of air left in the lungs after maximal exhalation, which is around 1200-1500 ml in an average human. This volume is necessary to keep the alveoli inflated and prevent lung collapse. Choices A (500 ml), B (3-4.5 ml), and C (1000 ml) are incorrect because they do not accurately represent the typical residual volume in the lungs of an average human. Choice A is too low, choices B and C are significantly below the actual range of residual volume.
Question 3 of 5
Diaphragm present in mammals is
Correct Answer: C
Rationale: The diaphragm in mammals is a muscular structure that separates the thoracic and abdominal cavities. This is essential for breathing as it contracts and relaxes to facilitate the movement of air into and out of the lungs. Therefore, the correct answer is C. Choice A is incorrect because the membrane between the external and middle ear is called the eardrum or tympanic membrane. Choice B is incorrect as the membrane around the brain is the meninges. Choice D is incorrect as the membrane around the lungs is the pleura.
Question 4 of 5
A nurse is demonstrating suctioning a tracheostomy during the annual skills review. What action by the student demonstrates that more teaching is needed?
Correct Answer: A
Rationale: The correct answer is A because applying suction while inserting the catheter can cause damage to the tracheal mucosa and lead to bleeding or injury. The correct technique is to insert the catheter without applying suction, then apply suction while withdrawing it. Preoxygenating the client (B) is a recommended practice to prevent hypoxia. Suctioning for a total of three times if needed (C) and suctioning for only 10 to 15 seconds each time (D) are both appropriate and safe suctioning practices.
Question 5 of 5
A nurse working in a geriatric clinic sees clients with "cold" symptoms and rhinitis. The primary health care provider (PHCP) often leaves a prescription for diphenhydramine. What action by the nurse is best?
Correct Answer: C
Rationale: The correct answer is C: Consult with the PHCP about the medication. This is the best action because diphenhydramine may not be the most appropriate medication for older adults due to potential side effects like increased risk of falls, confusion, and urinary retention. Consulting with the PHCP will ensure that the medication is safe and effective for the client. A: Teaching about drowsiness is important but not the priority. B: Drinking water is generally good advice but not specific to diphenhydramine. D: Taking medication with food can help reduce stomach upset but doesn't address the concerns related to diphenhydramine in older adults.