ATI RN
NCLEX Questions for Oxygenation Questions
Question 1 of 5
Normal cardiac output is 4 to 6 L/min in a healthy adult at rest. Which of the following is the correct formula to calculate cardiac output?
Correct Answer: A
Rationale: The correct formula to calculate cardiac output is stroke volume multiplied by heart rate. This is because cardiac output is the amount of blood pumped by the heart in one minute, which is determined by the volume of blood ejected per heartbeat (stroke volume) and the number of heartbeats per minute (heart rate). Multiplying stroke volume by heart rate gives the total volume of blood pumped out by the heart per minute, representing cardiac output. Summary: A: Correct. Cardiac output = Stroke volume x Heart rate B: Incorrect. This formula does not consider heart rate. C: Incorrect. Cardiac index is not used to calculate cardiac output. D: Incorrect. This formula is the inverse of the correct formula.
Question 2 of 5
A nurse is caring for a client who has pneumonia. Which of the following assessments is the priority?
Correct Answer: A
Rationale: The correct answer is A: Breath sounds. In pneumonia, assessing breath sounds is the priority to monitor for respiratory distress and adequacy of oxygenation. Abnormal breath sounds can indicate worsening pneumonia and the need for immediate intervention. Peripheral edema (B), urinary output (C), and skin turgor (D) are important assessments but are secondary to monitoring respiratory status in a client with pneumonia. It is crucial to prioritize respiratory assessments to ensure timely intervention and prevent respiratory compromise.
Question 3 of 5
A client with pneumonia is placed on a fluid restriction of 1500 mL per day. How should the nurse manage the fluid intake?
Correct Answer: C
Rationale: The correct answer is C because allowing more fluids during the day helps prevent fluid overload and promotes optimal kidney function during waking hours. This approach also reduces the risk of nocturia. Providing fluids mainly at night (Choice A) can lead to disrupted sleep due to frequent bathroom trips. Dividing fluids equally across meals (Choice B) may not be appropriate as it could exceed the daily restriction. Limiting fluid intake to meals only (Choice D) may not provide enough hydration throughout the day, risking dehydration.
Question 4 of 5
A client with a pleural effusion is scheduled for a thoracentesis. What is the nurse's priority pre-procedure intervention?
Correct Answer: B
Rationale: The correct answer is B: Positioning the client sitting upright and leaning forward. This position helps to expose the area for the thoracentesis and prevents puncturing of the underlying structures. It also maximizes lung expansion, making the procedure safer and more effective. Administering analgesics (choice A) is important but not the priority. Ensuring informed consent (choice C) is important but can be done after positioning. Teaching deep breathing exercises (choice D) is also important but not the priority pre-procedure intervention.
Question 5 of 5
A client is experiencing respiratory acidosis. What is the nurse's priority intervention?
Correct Answer: D
Rationale: The correct answer is D. Positioning the client to promote lung expansion is the priority intervention for a client experiencing respiratory acidosis as it helps improve ventilation and oxygenation. This intervention helps optimize lung function and can aid in correcting the acidosis by increasing the efficiency of gas exchange. Administering a bronchodilator (A) may help with bronchoconstriction but is not the priority in this situation. Initiating deep breathing exercises (B) may be helpful in some cases but may not be appropriate for a client in respiratory distress. Providing supplemental oxygen (C) may help improve oxygenation, but without addressing the underlying cause of the acidosis, it may not fully resolve the issue.