ATI RN
Multiple Choice Questions and Answers on Respiratory System Questions
Question 1 of 5
which actions occur in inhalation
Correct Answer: D
Rationale: The correct answer is D because during inhalation, the rib muscles and diaphragm contract, expanding the chest cavity which increases its volume. This decrease in pressure inside the lungs allows air to rush in. Therefore, all the actions mentioned in options A, B, and C occur during inhalation. Rib muscle and diaphragm contraction, increased volume in the chest cavity, and decreased air pressure collectively facilitate the process of inhalation. The other choices are incorrect because they do not encompass all the necessary actions that occur during inhalation.
Question 2 of 5
Which action should the nurse in the hypertension clinic take to obtain an accurate baseline blood pressure (BP) for a new client?
Correct Answer: B
Rationale: The correct answer is B because having the client sit in a chair with feet flat on the floor is the recommended position for accurate baseline BP measurement. This position ensures proper alignment of the heart and the cuff, reducing errors caused by arm positioning. Choice A is incorrect as deflating the cuff at a rate of 30 mm Hg per second is not related to obtaining an accurate baseline BP measurement. Choice C is incorrect as measuring BP in the supine position can lead to inaccurate readings due to changes in blood flow dynamics. Choice D is incorrect as obtaining two BP readings in the dominant arm and averaging the results may not provide an accurate baseline BP measurement due to variations in BP readings between arms.
Question 3 of 5
A client who has chronic heart failure tells the nurse 'I was fine when I went to bed but I woke up in the middle of the night feeling like I was suffocating!' How should the nurse document this finding?
Correct Answer: C
Rationale: The correct answer is C: Paroxysmal nocturnal dyspnea. This finding describes the sudden onset of severe shortness of breath at night, commonly seen in patients with chronic heart failure due to fluid redistribution when lying down. Orthopnea (A) is difficulty breathing when lying flat, not specifically at night. Pulsus alternans (B) is a regular rhythm with alternating strong and weak pulses, not related to this patient's symptom. Acute bilateral pleural effusion (D) is a buildup of fluid in the lungs, not a sudden onset symptom like in this case.
Question 4 of 5
Identify the inconsistent value at sea level
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
Regarding oxygen transport
Correct Answer: B
Rationale: The correct answer is B: 1 gram of pure Hb can combine with 1.34 - 1.39 ml of oxygen. This is correct because each gram of hemoglobin can bind with approximately 1.34 - 1.39 ml of oxygen, facilitating efficient oxygen transport in the blood. A is incorrect because while a small amount of oxygen is transported as dissolved oxygen, the majority is transported bound to hemoglobin. C is incorrect because arterial pO2 reflects the oxygen content in the blood, not just the hemoglobin levels. D is incorrect because CO2 is actually 20 times more soluble than oxygen, not 200 times.